build: bump version to 0.7.0

improvement: upgrade multiple dependencies
Updating anyhow v1.0.64 -> v1.0.65 Adding codespan-reporting v0.11.1 Updating const_format v0.2.28 -> v0.2.30 Updating const_format_proc_macros v0.2.22 -> v0.2.29 Updating crossbeam-utils v0.8.11 -> v0.8.12 Adding cxx v1.0.79 Adding cxx-build v1.0.79 Adding cxxbridge-flags v1.0.79 Adding cxxbridge-macro v1.0.79 Updating digest v0.10.3 -> v0.10.5 Updating hdrhistogram v7.5.1 -> v7.5.2 Updating iana-time-zone v0.1.50 -> v0.1.51 Adding iana-time-zone-haiku v0.1.1 Updating itertools v0.10.3 -> v0.10.5 Updating itoa v1.0.3 -> v1.0.4 Updating js-sys v0.3.59 -> v0.3.60 Updating libc v0.2.132 -> v0.2.135 Adding link-cplusplus v1.0.7 Updating lock_api v0.4.8 -> v0.4.9 Updating once_cell v1.14.0 -> v1.15.0 Updating openssl v0.10.41 -> v0.10.42 Updating openssl-sys v0.9.75 -> v0.9.76 Updating pest v2.3.0 -> v2.4.0 Updating pest_derive v2.3.0 -> v2.4.0 Updating pest_generator v2.3.0 -> v2.4.0 Updating pest_meta v2.3.0 -> v2.4.0 Updating proc-macro2 v1.0.43 -> v1.0.47 Updating rand_core v0.6.3 -> v0.6.4 Updating raw-cpuid v10.5.0 -> v10.6.0 Adding scratch v1.0.2 Updating serde v1.0.144 -> v1.0.145 Updating serde_derive v1.0.144 -> v1.0.145 Updating serde_json v1.0.85 -> v1.0.86 Adding sha1 v0.10.5 Updating smallvec v1.9.0 -> v1.10.0 Updating syn v1.0.99 -> v1.0.102 Adding termcolor v1.1.3 Updating thiserror v1.0.34 -> v1.0.37 Updating thiserror-impl v1.0.34 -> v1.0.37 Updating tokio v1.21.0 -> v1.21.2 Updating tokio-stream v0.1.9 -> v0.1.11 Updating tonic v0.8.1 -> v0.8.2 Updating tower-layer v0.3.1 -> v0.3.2 Updating tracing v0.1.36 -> v0.1.37 Updating tracing-attributes v0.1.22 -> v0.1.23 Updating tracing-core v0.1.29 -> v0.1.30 Updating tracing-subscriber v0.3.15 -> v0.3.16 Updating unicode-ident v1.0.3 -> v1.0.5 Updating unicode-normalization v0.1.21 -> v0.1.22 Adding unicode-width v0.1.10 Updating uuid v1.1.2 -> v1.2.1 Updating wasm-bindgen v0.2.82 -> v0.2.83 Updating wasm-bindgen-backend v0.2.82 -> v0.2.83 Updating wasm-bindgen-macro v0.2.82 -> v0.2.83 Updating wasm-bindgen-macro-support v0.2.82 -> v0.2.83 Updating wasm-bindgen-shared v0.2.82 -> v0.2.83 Updating web-sys v0.3.59 -> v0.3.60 Adding winapi-util v0.1.5
2025-09-01 03:40:46 -04:00 · 2022-10-16 15:42:11 -05:00 · 2022-10-16 15:33:11 -05:00 · 2022-10-16 15:25:06 -05:00
11 changed files with 782 additions and 111 deletions
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -54,9 +54,9 @@ dependencies = [

 [[package]]
 name = "anyhow"
-version = "1.0.64"
+version = "1.0.65"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9a8f622bcf6ff3df478e9deba3e03e4e04b300f8e6a139e192c05fa3490afc7"
+checksum = "98161a4e3e2184da77bb14f02184cdd111e83bbbcc9979dfee3c44b9a85f5602"

 [[package]]
 name = "async-stream"
@@ -231,6 +231,16 @@ dependencies = [
 "bitflags",
 ]

+[[package]]
+name = "codespan-reporting"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3538270d33cc669650c4b093848450d380def10c331d38c768e34cac80576e6e"
+dependencies = [
+ "termcolor",
+ "unicode-width",
+]
+
 [[package]]
 name = "config"
 version = "0.12.0"
@@ -283,23 +293,23 @@ dependencies = [
 "tonic",
 "tracing",
 "tracing-core",
- "tracing-subscriber 0.3.15",
+ "tracing-subscriber 0.3.16",
 ]

 [[package]]
 name = "const_format"
-version = "0.2.28"
+version = "0.2.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "79f926bc2341a80e6bb5a16e18057c8c90ca3edbdeb9fa497bd0f82b1f4df4e6"
+checksum = "7309d9b4d3d2c0641e018d449232f2e28f1b22933c137f157d3dbc14228b8c0e"
 dependencies = [
 "const_format_proc_macros",
 ]

 [[package]]
 name = "const_format_proc_macros"
-version = "0.2.22"
+version = "0.2.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef196d5d972878a48da7decb7686eded338b4858fbabeed513d63a7c98b2b82d"
+checksum = "d897f47bf7270cf70d370f8f98c1abb6d2d4cf60a6845d30e05bfb90c6568650"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -352,12 +362,11 @@ dependencies = [

 [[package]]
 name = "crossbeam-utils"
-version = "0.8.11"
+version = "0.8.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51887d4adc7b564537b15adcfb307936f8075dfcd5f00dde9a9f1d29383682bc"
+checksum = "edbafec5fa1f196ca66527c1b12c2ec4745ca14b50f1ad8f9f6f720b55d11fac"
 dependencies = [
 "cfg-if",
- "once_cell",
 ]

 [[package]]
@@ -370,6 +379,50 @@ dependencies = [
 "typenum",
 ]

+[[package]]
+name = "cxx"
+version = "1.0.79"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f83d0ebf42c6eafb8d7c52f7e5f2d3003b89c7aa4fd2b79229209459a849af8"
+dependencies = [
+ "cc",
+ "cxxbridge-flags",
+ "cxxbridge-macro",
+ "link-cplusplus",
+]
+
+[[package]]
+name = "cxx-build"
+version = "1.0.79"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "07d050484b55975889284352b0ffc2ecbda25c0c55978017c132b29ba0818a86"
+dependencies = [
+ "cc",
+ "codespan-reporting",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "scratch",
+ "syn",
+]
+
+[[package]]
+name = "cxxbridge-flags"
+version = "1.0.79"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "99d2199b00553eda8012dfec8d3b1c75fce747cf27c169a270b3b99e3448ab78"
+
+[[package]]
+name = "cxxbridge-macro"
+version = "1.0.79"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dcb67a6de1f602736dd7eaead0080cf3435df806c61b24b13328db128c58868f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "dashmap"
 version = "5.4.0"
@@ -385,9 +438,9 @@ dependencies = [

 [[package]]
 name = "digest"
-version = "0.10.3"
+version = "0.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2fb860ca6fafa5552fb6d0e816a69c8e49f0908bf524e30a90d97c85892d506"
+checksum = "adfbc57365a37acbd2ebf2b64d7e69bb766e2fea813521ed536f5d0520dcf86c"
 dependencies = [
 "block-buffer",
 "crypto-common",
@@ -662,9 +715,9 @@ dependencies = [

 [[package]]
 name = "hdrhistogram"
-version = "7.5.1"
+version = "7.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ea9fe3952d32674a14e0975009a3547af9ea364995b5ec1add2e23c2ae523ab"
+checksum = "7f19b9f54f7c7f55e31401bb647626ce0cf0f67b0004982ce815b3ee72a02aa8"
 dependencies = [
 "base64",
 "byteorder",
@@ -785,17 +838,28 @@ dependencies = [

 [[package]]
 name = "iana-time-zone"
-version = "0.1.50"
+version = "0.1.51"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd911b35d940d2bd0bea0f9100068e5b97b51a1cbe13d13382f132e0365257a0"
+checksum = "f5a6ef98976b22b3b7f2f3a806f858cb862044cfa66805aa3ad84cb3d3b785ed"
 dependencies = [
 "android_system_properties",
 "core-foundation-sys",
+ "iana-time-zone-haiku",
 "js-sys",
 "wasm-bindgen",
 "winapi",
 ]

+[[package]]
+name = "iana-time-zone-haiku"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0703ae284fc167426161c2e3f1da3ea71d94b21bedbcc9494e92b28e334e3dca"
+dependencies = [
+ "cxx",
+ "cxx-build",
+]
+
 [[package]]
 name = "idna"
 version = "0.3.0"
@@ -827,24 +891,24 @@ dependencies = [

 [[package]]
 name = "itertools"
-version = "0.10.3"
+version = "0.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9a9d19fa1e79b6215ff29b9d6880b706147f16e9b1dbb1e4e5947b5b02bc5e3"
+checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
 dependencies = [
 "either",
 ]

 [[package]]
 name = "itoa"
-version = "1.0.3"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c8af84674fe1f223a982c933a0ee1086ac4d4052aa0fb8060c12c6ad838e754"
+checksum = "4217ad341ebadf8d8e724e264f13e593e0648f5b3e94b3896a5df283be015ecc"

 [[package]]
 name = "js-sys"
-version = "0.3.59"
+version = "0.3.60"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "258451ab10b34f8af53416d1fdab72c22e805f0c92a1136d59470ec0b11138b2"
+checksum = "49409df3e3bf0856b916e2ceaca09ee28e6871cf7d9ce97a692cacfdb2a25a47"
 dependencies = [
 "wasm-bindgen",
 ]
@@ -868,9 +932,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"

 [[package]]
 name = "libc"
-version = "0.2.132"
+version = "0.2.135"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8371e4e5341c3a96db127eb2465ac681ced4c433e01dd0e938adbef26ba93ba5"
+checksum = "68783febc7782c6c5cb401fbda4de5a9898be1762314da0bb2c10ced61f18b0c"

 [[package]]
 name = "libsqlite3-sys"
@@ -883,6 +947,15 @@ dependencies = [
 "vcpkg",
 ]

+[[package]]
+name = "link-cplusplus"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9272ab7b96c9046fbc5bc56c06c117cb639fe2d509df0c421cad82d2915cf369"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "linked-hash-map"
 version = "0.5.6"
@@ -891,9 +964,9 @@ checksum = "0717cef1bc8b636c6e1c1bbdefc09e6322da8a9321966e8928ef80d20f7f770f"

 [[package]]
 name = "lock_api"
-version = "0.4.8"
+version = "0.4.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f80bf5aacaf25cbfc8210d1cfb718f2bf3b11c4c54e5afe36c236853a8ec390"
+checksum = "435011366fe56583b16cf956f9df0095b405b82d76425bc8981c0e22e60ec4df"
 dependencies = [
 "autocfg 1.1.0",
 "scopeguard",
@@ -1022,7 +1095,7 @@ checksum = "38bf9645c8b145698bb0b18a4637dcacbc421ea49bef2317e4fd8065a387cf21"

 [[package]]
 name = "nostr-rs-relay"
-version = "0.6.2"
+version = "0.7.0"
 dependencies = [
 "anyhow",
 "bitcoin_hashes",
@@ -1042,6 +1115,7 @@ dependencies = [
 "r2d2",
 "r2d2_sqlite",
 "rand 0.8.5",
+ "regex",
 "rusqlite",
 "secp256k1",
 "serde",
@@ -1144,15 +1218,15 @@ dependencies = [

 [[package]]
 name = "once_cell"
-version = "1.14.0"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f7254b99e31cad77da24b08ebf628882739a608578bb1bcdfc1f9c21260d7c0"
+checksum = "e82dad04139b71a90c080c8463fe0dc7902db5192d939bd0950f074d014339e1"

 [[package]]
 name = "openssl"
-version = "0.10.41"
+version = "0.10.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "618febf65336490dfcf20b73f885f5651a0c89c64c2d4a8c3662585a70bf5bd0"
+checksum = "12fc0523e3bd51a692c8850d075d74dc062ccf251c0110668cbd921917118a13"
 dependencies = [
 "bitflags",
 "cfg-if",
@@ -1182,9 +1256,9 @@ checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"

 [[package]]
 name = "openssl-sys"
-version = "0.9.75"
+version = "0.9.76"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e5f9bd0c2710541a3cda73d6f9ac4f1b240de4ae261065d309dbe73d9dceb42f"
+checksum = "5230151e44c0f05157effb743e8d517472843121cf9243e8b81393edb5acd9ce"
 dependencies = [
 "autocfg 1.1.0",
 "cc",
@@ -1251,9 +1325,9 @@ checksum = "478c572c3d73181ff3c2539045f6eb99e5491218eae919370993b890cdbdd98e"

 [[package]]
 name = "pest"
-version = "2.3.0"
+version = "2.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b0560d531d1febc25a3c9398a62a71256c0178f2e3443baedd9ad4bb8c9deb4"
+checksum = "dbc7bc69c062e492337d74d59b120c274fd3d261b6bf6d3207d499b4b379c41a"
 dependencies = [
 "thiserror",
 "ucd-trie",
@@ -1261,9 +1335,9 @@ dependencies = [

 [[package]]
 name = "pest_derive"
-version = "2.3.0"
+version = "2.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "905708f7f674518498c1f8d644481440f476d39ca6ecae83319bba7c6c12da91"
+checksum = "60b75706b9642ebcb34dab3bc7750f811609a0eb1dd8b88c2d15bf628c1c65b2"
 dependencies = [
 "pest",
 "pest_generator",
@@ -1271,9 +1345,9 @@ dependencies = [

 [[package]]
 name = "pest_generator"
-version = "2.3.0"
+version = "2.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5803d8284a629cc999094ecd630f55e91b561a1d1ba75e233b00ae13b91a69ad"
+checksum = "f4f9272122f5979a6511a749af9db9bfc810393f63119970d7085fed1c4ea0db"
 dependencies = [
 "pest",
 "pest_meta",
@@ -1284,13 +1358,13 @@ dependencies = [

 [[package]]
 name = "pest_meta"
-version = "2.3.0"
+version = "2.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1538eb784f07615c6d9a8ab061089c6c54a344c5b4301db51990ca1c241e8c04"
+checksum = "4c8717927f9b79515e565a64fe46c38b8cd0427e64c40680b14a7365ab09ac8d"
 dependencies = [
 "once_cell",
 "pest",
- "sha-1",
+ "sha1",
 ]

 [[package]]
@@ -1339,9 +1413,9 @@ checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"

 [[package]]
 name = "proc-macro2"
-version = "1.0.43"
+version = "1.0.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a2ca2c61bc9f3d74d2886294ab7b9853abd9c1ad903a3ac7815c58989bb7bab"
+checksum = "5ea3d908b0e36316caf9e9e2c4625cdde190a7e6f440d794667ed17a1855e725"
 dependencies = [
 "unicode-ident",
 ]
@@ -1452,7 +1526,7 @@ checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
 dependencies = [
 "libc",
 "rand_chacha 0.3.1",
- "rand_core 0.6.3",
+ "rand_core 0.6.4",
 ]

 [[package]]
@@ -1472,7 +1546,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
 dependencies = [
 "ppv-lite86",
- "rand_core 0.6.3",
+ "rand_core 0.6.4",
 ]

 [[package]]
@@ -1492,9 +1566,9 @@ checksum = "9c33a3c44ca05fa6f1807d8e6743f3824e8509beca625669633be0acbdf509dc"

 [[package]]
 name = "rand_core"
-version = "0.6.3"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
 dependencies = [
 "getrandom",
 ]
@@ -1563,9 +1637,9 @@ dependencies = [

 [[package]]
 name = "raw-cpuid"
-version = "10.5.0"
+version = "10.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6aa2540135b6a94f74c7bc90ad4b794f822026a894f3d7bcd185c100d13d4ad6"
+checksum = "a6823ea29436221176fe662da99998ad3b4db2c7f31e7b6f5fe43adccd6320bb"
 dependencies = [
 "bitflags",
 ]
@@ -1690,6 +1764,12 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"

+[[package]]
+name = "scratch"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c8132065adcfd6e02db789d9285a0deb2f3fcb04002865ab67d5fb103533898"
+
 [[package]]
 name = "secp256k1"
 version = "0.21.3"
@@ -1736,18 +1816,18 @@ dependencies = [

 [[package]]
 name = "serde"
-version = "1.0.144"
+version = "1.0.145"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f747710de3dcd43b88c9168773254e809d8ddbdf9653b84e2554ab219f17860"
+checksum = "728eb6351430bccb993660dfffc5a72f91ccc1295abaa8ce19b27ebe4f75568b"
 dependencies = [
 "serde_derive",
 ]

 [[package]]
 name = "serde_derive"
-version = "1.0.144"
+version = "1.0.145"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94ed3a816fb1d101812f83e789f888322c34e291f894f19590dc310963e87a00"
+checksum = "81fa1584d3d1bcacd84c277a0dfe21f5b0f6accf4a23d04d4c6d61f1af522b4c"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -1756,9 +1836,9 @@ dependencies = [

 [[package]]
 name = "serde_json"
-version = "1.0.85"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e55a28e3aaef9d5ce0506d0a14dbba8054ddc7e499ef522dd8b26859ec9d4a44"
+checksum = "41feea4228a6f1cd09ec7a3593a682276702cd67b5273544757dae23c096f074"
 dependencies = [
 "indexmap",
 "itoa",
@@ -1777,6 +1857,17 @@ dependencies = [
 "digest",
 ]

+[[package]]
+name = "sha1"
+version = "0.10.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f04293dc80c3993519f2d7f6f511707ee7094fe0c6d3406feb330cdb3540eba3"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
 [[package]]
 name = "sharded-slab"
 version = "0.1.4"
@@ -1806,9 +1897,9 @@ dependencies = [

 [[package]]
 name = "smallvec"
-version = "1.9.0"
+version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fd0db749597d91ff862fd1d55ea87f7855a744a8425a64695b6fca237d1dad1"
+checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"

 [[package]]
 name = "socket2"
@@ -1822,9 +1913,9 @@ dependencies = [

 [[package]]
 name = "syn"
-version = "1.0.99"
+version = "1.0.102"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "58dbef6ec655055e20b86b15a8cc6d439cca19b667537ac6a1369572d151ab13"
+checksum = "3fcd952facd492f9be3ef0d0b7032a6e442ee9b361d4acc2b1d0c4aaa5f613a1"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -1852,19 +1943,28 @@ dependencies = [
 ]

 [[package]]
-name = "thiserror"
-version = "1.0.34"
+name = "termcolor"
+version = "1.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c1b05ca9d106ba7d2e31a9dab4a64e7be2cce415321966ea3132c49a656e252"
+checksum = "bab24d30b911b2376f3a13cc2cd443142f0c81dda04c118693e35b3835757755"
+dependencies = [
+ "winapi-util",
+]
+
+[[package]]
+name = "thiserror"
+version = "1.0.37"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "10deb33631e3c9018b9baf9dcbbc4f737320d2b576bac10f6aefa048fa407e3e"
 dependencies = [
 "thiserror-impl",
 ]

 [[package]]
 name = "thiserror-impl"
-version = "1.0.34"
+version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e8f2591983642de85c921015f3f070c665a197ed69e417af436115e3a1407487"
+checksum = "982d17546b47146b28f7c22e3d08465f6b8903d0ea13c1660d9d84a6e7adcdbb"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -1897,9 +1997,9 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"

 [[package]]
 name = "tokio"
-version = "1.21.0"
+version = "1.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89797afd69d206ccd11fb0ea560a44bbb87731d020670e79416d442919257d42"
+checksum = "a9e03c497dc955702ba729190dc4aac6f2a0ce97f913e5b1b5912fc5039d9099"
 dependencies = [
 "autocfg 1.1.0",
 "bytes",
@@ -1907,7 +2007,6 @@ dependencies = [
 "memchr",
 "mio",
 "num_cpus",
- "once_cell",
 "parking_lot",
 "pin-project-lite",
 "signal-hook-registry",
@@ -1950,9 +2049,9 @@ dependencies = [

 [[package]]
 name = "tokio-stream"
-version = "0.1.9"
+version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df54d54117d6fdc4e4fea40fe1e4e566b3505700e148a6827e59b34b0d2600d9"
+checksum = "d660770404473ccd7bc9f8b28494a811bc18542b915c0855c51e8f419d5223ce"
 dependencies = [
 "futures-core",
 "pin-project-lite",
@@ -1996,9 +2095,9 @@ dependencies = [

 [[package]]
 name = "tonic"
-version = "0.8.1"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11cd56bdb54ef93935a6a79dbd1d91f1ebd4c64150fd61654031fd6b8b775c91"
+checksum = "55b9af819e54b8f33d453655bef9b9acc171568fb49523078d0cc4e7484200ec"
 dependencies = [
 "async-stream",
 "async-trait",
@@ -2067,9 +2166,9 @@ dependencies = [

 [[package]]
 name = "tower-layer"
-version = "0.3.1"
+version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "343bc9466d3fe6b0f960ef45960509f84480bf4fd96f92901afe7ff3df9d3a62"
+checksum = "c20c8dbed6283a09604c3e69b4b7eeb54e298b8a600d4d5ecb5ad39de609f1d0"

 [[package]]
 name = "tower-service"
@@ -2079,9 +2178,9 @@ checksum = "b6bc1c9ce2b5135ac7f93c72918fc37feb872bdc6a5533a8b85eb4b86bfdae52"

 [[package]]
 name = "tracing"
-version = "0.1.36"
+version = "0.1.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fce9567bd60a67d08a16488756721ba392f24f29006402881e43b19aac64307"
+checksum = "8ce8c33a8d48bd45d624a6e523445fd21ec13d3653cd51f681abf67418f54eb8"
 dependencies = [
 "cfg-if",
 "log",
@@ -2092,9 +2191,9 @@ dependencies = [

 [[package]]
 name = "tracing-attributes"
-version = "0.1.22"
+version = "0.1.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11c75893af559bc8e10716548bdef5cb2b983f8e637db9d0e15126b61b484ee2"
+checksum = "4017f8f45139870ca7e672686113917c71c7a6e02d4924eda67186083c03081a"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -2103,9 +2202,9 @@ dependencies = [

 [[package]]
 name = "tracing-core"
-version = "0.1.29"
+version = "0.1.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5aeea4303076558a00714b823f9ad67d58a3bbda1df83d8827d21193156e22f7"
+checksum = "24eb03ba0eab1fd845050058ce5e616558e8f8d8fca633e6b163fe25c797213a"
 dependencies = [
 "once_cell",
 "valuable",
@@ -2166,9 +2265,9 @@ dependencies = [

 [[package]]
 name = "tracing-subscriber"
-version = "0.3.15"
+version = "0.3.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60db860322da191b40952ad9affe65ea23e7dd6a5c442c2c42865810c6ab8e6b"
+checksum = "a6176eae26dd70d0c919749377897b54a9276bd7061339665dd68777926b5a70"
 dependencies = [
 "matchers 0.1.0",
 "once_cell",
@@ -2224,19 +2323,25 @@ checksum = "099b7128301d285f79ddd55b9a83d5e6b9e97c92e0ea0daebee7263e932de992"

 [[package]]
 name = "unicode-ident"
-version = "1.0.3"
+version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c4f5b37a154999a8f3f98cc23a628d850e154479cd94decf3414696e12e31aaf"
+checksum = "6ceab39d59e4c9499d4e5a8ee0e2735b891bb7308ac83dfb4e80cad195c9f6f3"

 [[package]]
 name = "unicode-normalization"
-version = "0.1.21"
+version = "0.1.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "854cbdc4f7bc6ae19c820d44abdc3277ac3e1b2b93db20a636825d9322fb60e6"
+checksum = "5c5713f0fc4b5db668a2ac63cdb7bb4469d8c9fed047b1d0292cc7b0ce2ba921"
 dependencies = [
 "tinyvec",
 ]

+[[package]]
+name = "unicode-width"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c0edd1e5b14653f783770bce4a4dabb4a5108a5370a5f5d8cfe8710c361f6c8b"
+
 [[package]]
 name = "unicode-xid"
 version = "0.2.4"
@@ -2262,9 +2367,9 @@ checksum = "09cc8ee72d2a9becf2f2febe0205bbed8fc6615b7cb429ad062dc7b7ddd036a9"

 [[package]]
 name = "uuid"
-version = "1.1.2"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd6469f4314d5f1ffec476e05f17cc9a78bc7a27a6a857842170bdf8d6f98d2f"
+checksum = "feb41e78f93363bb2df8b0e86a2ca30eed7806ea16ea0c790d757cf93f79be83"
 dependencies = [
 "getrandom",
 ]
@@ -2311,9 +2416,9 @@ checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"

 [[package]]
 name = "wasm-bindgen"
-version = "0.2.82"
+version = "0.2.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc7652e3f6c4706c8d9cd54832c4a4ccb9b5336e2c3bd154d5cccfbf1c1f5f7d"
+checksum = "eaf9f5aceeec8be17c128b2e93e031fb8a4d469bb9c4ae2d7dc1888b26887268"
 dependencies = [
 "cfg-if",
 "wasm-bindgen-macro",
@@ -2321,9 +2426,9 @@ dependencies = [

 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.82"
+version = "0.2.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "662cd44805586bd52971b9586b1df85cdbbd9112e4ef4d8f41559c334dc6ac3f"
+checksum = "4c8ffb332579b0557b52d268b91feab8df3615f265d5270fec2a8c95b17c1142"
 dependencies = [
 "bumpalo",
 "log",
@@ -2336,9 +2441,9 @@ dependencies = [

 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.82"
+version = "0.2.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b260f13d3012071dfb1512849c033b1925038373aea48ced3012c09df952c602"
+checksum = "052be0f94026e6cbc75cdefc9bae13fd6052cdcaf532fa6c45e7ae33a1e6c810"
 dependencies = [
 "quote",
 "wasm-bindgen-macro-support",
@@ -2346,9 +2451,9 @@ dependencies = [

 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.82"
+version = "0.2.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5be8e654bdd9b79216c2929ab90721aa82faf65c48cdf08bdc4e7f51357b80da"
+checksum = "07bc0c051dc5f23e307b13285f9d75df86bfdf816c5721e573dec1f9b8aa193c"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -2359,15 +2464,15 @@ dependencies = [

 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.82"
+version = "0.2.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6598dd0bd3c7d51095ff6531a5b23e02acdc81804e30d8f07afb77b7215a140a"
+checksum = "1c38c045535d93ec4f0b4defec448e4291638ee608530863b1e2ba115d4fff7f"

 [[package]]
 name = "web-sys"
-version = "0.3.59"
+version = "0.3.60"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed055ab27f941423197eb86b2035720b1a3ce40504df082cac2ecc6ed73335a1"
+checksum = "bcda906d8be16e728fd5adc5b729afad4e444e106ab28cd1c7256e54fa61510f"
 dependencies = [
 "js-sys",
 "wasm-bindgen",
@@ -2389,6 +2494,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"

+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "nostr-rs-relay"
-version = "0.6.2"
+version = "0.7.0"
 edition = "2021"

 [dependencies]
@@ -32,6 +32,7 @@ http = { version = "0.2" }
 parse_duration = "2"
 rand = "0.8"
 const_format = "0.2.28"
+regex = "1"

 [dev-dependencies]
 anyhow = "1"
--- a/README.md
+++ b/README.md
@@ -27,6 +27,7 @@ mirrored on [GitHub](https://github.com/scsibug/nostr-rs-relay).
 - [x] NIP-15: [End of Stored Events Notice](https://github.com/nostr-protocol/nips/blob/master/15.md)
 - [x] NIP-16: [Event Treatment](https://github.com/nostr-protocol/nips/blob/master/16.md)
 - [x] NIP-22: [Event `created_at` limits](https://github.com/nostr-protocol/nips/blob/master/22.md) (_future-dated events only_)
+- [x] NIP-26: [Event Delegation](https://github.com/nostr-protocol/nips/blob/master/26.md)

 ## Quick Start

--- a/src/db.rs
+++ b/src/db.rs
@@ -142,12 +142,15 @@ pub async fn db_writer(
            if next_event.is_none() {
                break;
            }
+            // track if an event write occurred; this is used to
+            // update the rate limiter
            let mut event_write = false;
            let subm_event = next_event.unwrap();
            let event = subm_event.event;
            let notice_tx = subm_event.notice_tx;
            // check if this event is authorized.
            if let Some(allowed_addrs) = whitelist {
+                // TODO: incorporate delegated pubkeys
                // if the event address is not in allowed_addrs.
                if !allowed_addrs.contains(&event.pubkey) {
                    info!(
@@ -284,12 +287,13 @@ pub fn write_event(conn: &mut PooledConnection, e: &Event) -> Result<usize> {
    let tx = conn.transaction()?;
    // get relevant fields from event and convert to blobs.
    let id_blob = hex::decode(&e.id).ok();
-    let pubkey_blob = hex::decode(&e.pubkey).ok();
+    let pubkey_blob: Option<Vec<u8>> = hex::decode(&e.pubkey).ok();
+    let delegator_blob: Option<Vec<u8>> = e.delegated_by.as_ref().and_then(|d| hex::decode(d).ok());
    let event_str = serde_json::to_string(&e).ok();
    // ignore if the event hash is a duplicate.
    let mut ins_count = tx.execute(
-        "INSERT OR IGNORE INTO event (event_hash, created_at, kind, author, content, first_seen, hidden) VALUES (?1, ?2, ?3, ?4, ?5, strftime('%s','now'), FALSE);",
-        params![id_blob, e.created_at, e.kind, pubkey_blob, event_str]
+        "INSERT OR IGNORE INTO event (event_hash, created_at, kind, author, delegated_by, content, first_seen, hidden) VALUES (?1, ?2, ?3, ?4, ?5, ?6, strftime('%s','now'), FALSE);",
+        params![id_blob, e.created_at, e.kind, pubkey_blob, delegator_blob, event_str]
    )?;
    if ins_count == 0 {
        // if the event was a duplicate, no need to insert event or
@@ -439,16 +443,22 @@ fn query_from_filter(f: &ReqFilter) -> (String, Vec<Box<dyn ToSql>>) {
        for auth in authvec {
            match hex_range(auth) {
                Some(HexSearch::Exact(ex)) => {
-                    auth_searches.push("author=?".to_owned());
+                    auth_searches.push("author=? OR delegated_by=?".to_owned());
+                    params.push(Box::new(ex.clone()));
                    params.push(Box::new(ex));
                }
                Some(HexSearch::Range(lower, upper)) => {
-                    auth_searches.push("(author>? AND author<?)".to_owned());
+                    auth_searches.push(
+                        "(author>? AND author<?) OR (delegated_by>? AND delegated_by<?)".to_owned(),
+                    );
+                    params.push(Box::new(lower.clone()));
+                    params.push(Box::new(upper.clone()));
                    params.push(Box::new(lower));
                    params.push(Box::new(upper));
                }
                Some(HexSearch::LowerOnly(lower)) => {
-                    auth_searches.push("author>?".to_owned());
+                    auth_searches.push("author>? OR delegated_by>?".to_owned());
+                    params.push(Box::new(lower.clone()));
                    params.push(Box::new(lower));
                }
                None => {
--- a/src/delegation.rs
+++ b/src/delegation.rs
@@ -0,0 +1,416 @@
+//! Event parsing and validation
+use crate::error::Error;
+use crate::error::Result;
+use crate::event::Event;
+use bitcoin_hashes::{sha256, Hash};
+use lazy_static::lazy_static;
+use regex::Regex;
+use secp256k1::{schnorr, Secp256k1, VerifyOnly, XOnlyPublicKey};
+use serde::{Deserialize, Serialize};
+use std::str::FromStr;
+use tracing::{debug, info};
+
+// This handles everything related to delegation, in particular the
+// condition/rune parsing and logic.
+
+// Conditions are poorly specified, so we will implement the minimum
+// necessary for now.
+
+// fields MUST be either "kind" or "created_at".
+// operators supported are ">", "<", "=", "!".
+// no operations on 'content' are supported.
+
+// this allows constraints for:
+// valid date ranges (valid from X->Y dates).
+// specific kinds (publish kind=1,5)
+// kind ranges (publish ephemeral events, kind>19999&kind<30001)
+
+// for more complex scenarios (allow delegatee to publish ephemeral
+// AND replacement events), it may be necessary to generate and use
+// different condition strings, since we do not support grouping or
+// "OR" logic.
+
+lazy_static! {
+    /// Secp256k1 verification instance.
+    pub static ref SECP: Secp256k1<VerifyOnly> = Secp256k1::verification_only();
+}
+
+#[derive(Serialize, Deserialize, PartialEq, Eq, Debug, Clone)]
+pub enum Field {
+    Kind,
+    CreatedAt,
+}
+
+impl FromStr for Field {
+    type Err = Error;
+    fn from_str(value: &str) -> Result<Self, Self::Err> {
+        if value == "kind" {
+            Ok(Field::Kind)
+        } else if value == "created_at" {
+            Ok(Field::CreatedAt)
+        } else {
+            Err(Error::DelegationParseError)
+        }
+    }
+}
+
+#[derive(Serialize, Deserialize, PartialEq, Eq, Debug, Clone)]
+pub enum Operator {
+    LessThan,
+    GreaterThan,
+    Equals,
+    NotEquals,
+}
+impl FromStr for Operator {
+    type Err = Error;
+    fn from_str(value: &str) -> Result<Self, Self::Err> {
+        if value == "<" {
+            Ok(Operator::LessThan)
+        } else if value == ">" {
+            Ok(Operator::GreaterThan)
+        } else if value == "=" {
+            Ok(Operator::Equals)
+        } else if value == "!" {
+            Ok(Operator::NotEquals)
+        } else {
+            Err(Error::DelegationParseError)
+        }
+    }
+}
+
+#[derive(Serialize, Deserialize, PartialEq, Eq, Debug, Clone)]
+pub struct ConditionQuery {
+    pub(crate) conditions: Vec<Condition>,
+}
+
+impl ConditionQuery {
+    pub fn allows_event(&self, event: &Event) -> bool {
+        // check each condition, to ensure that the event complies
+        // with the restriction.
+        for c in &self.conditions {
+            if !c.allows_event(event) {
+                // any failing conditions invalidates the delegation
+                // on this event
+                return false;
+            }
+        }
+        // delegation was permitted unconditionally, or all conditions
+        // were true
+        true
+    }
+}
+
+// Verify that the delegator approved the delegation; return a ConditionQuery if so.
+pub fn validate_delegation(
+    delegator: &str,
+    delegatee: &str,
+    cond_query: &str,
+    sigstr: &str,
+) -> Option<ConditionQuery> {
+    // form the token
+    let tok = format!("nostr:delegation:{}:{}", delegatee, cond_query);
+    // form SHA256 hash
+    let digest: sha256::Hash = sha256::Hash::hash(tok.as_bytes());
+    let sig = schnorr::Signature::from_str(sigstr).unwrap();
+    if let Ok(msg) = secp256k1::Message::from_slice(digest.as_ref()) {
+        if let Ok(pubkey) = XOnlyPublicKey::from_str(delegator) {
+            let verify = SECP.verify_schnorr(&sig, &msg, &pubkey);
+            if verify.is_ok() {
+                // return the parsed condition query
+                cond_query.parse::<ConditionQuery>().ok()
+            } else {
+                debug!("client sent an delegation signature that did not validate");
+                None
+            }
+        } else {
+            debug!("client sent malformed delegation pubkey");
+            None
+        }
+    } else {
+        info!("error converting delegation digest to secp256k1 message");
+        None
+    }
+}
+
+/// Parsed delegation condition
+/// see https://github.com/nostr-protocol/nips/pull/28#pullrequestreview-1084903800
+/// An example complex condition would be:  kind=1,2,3&created_at<1665265999
+#[derive(Serialize, Deserialize, PartialEq, Eq, Debug, Clone)]
+pub struct Condition {
+    pub(crate) field: Field,
+    pub(crate) operator: Operator,
+    pub(crate) values: Vec<u64>,
+}
+
+impl Condition {
+    /// Check if this condition allows the given event to be delegated
+    pub fn allows_event(&self, event: &Event) -> bool {
+        // determine what the right-hand side of the operator is
+        let resolved_field = match &self.field {
+            Field::Kind => event.kind,
+            Field::CreatedAt => event.created_at,
+        };
+        match &self.operator {
+            Operator::LessThan => {
+                // the less-than operator is only valid for single values.
+                if self.values.len() == 1 {
+                    if let Some(v) = self.values.first() {
+                        return resolved_field < *v;
+                    }
+                }
+            }
+            Operator::GreaterThan => {
+                // the greater-than operator is only valid for single values.
+                if self.values.len() == 1 {
+                    if let Some(v) = self.values.first() {
+                        return resolved_field > *v;
+                    }
+                }
+            }
+            Operator::Equals => {
+                // equals is interpreted as "must be equal to at least one provided value"
+                return self.values.iter().any(|&x| resolved_field == x);
+            }
+            Operator::NotEquals => {
+                // not-equals is interpreted as "must not be equal to any provided value"
+                // this is the one case where an empty list of values could be allowed; even though it is a pointless restriction.
+                return self.values.iter().all(|&x| resolved_field != x);
+            }
+        }
+        false
+    }
+}
+
+fn str_to_condition(cs: &str) -> Option<Condition> {
+    // a condition is a string (alphanum+underscore), an operator (<>=!), and values (num+comma)
+    lazy_static! {
+        static ref RE: Regex = Regex::new("([[:word:]]+)([<>=!]+)([,[[:digit:]]]*)").unwrap();
+    }
+    // match against the regex
+    let caps = RE.captures(cs)?;
+    let field = caps.get(1)?.as_str().parse::<Field>().ok()?;
+    let operator = caps.get(2)?.as_str().parse::<Operator>().ok()?;
+    // values are just comma separated numbers, but all must be parsed
+    let rawvals = caps.get(3)?.as_str();
+    let values = rawvals
+        .split_terminator(',')
+        .map(|n| n.parse::<u64>().ok())
+        .collect::<Option<Vec<_>>>()?;
+    // convert field string into Field
+    Some(Condition {
+        field,
+        operator,
+        values,
+    })
+}
+
+/// Parse a condition query from a string slice
+impl FromStr for ConditionQuery {
+    type Err = Error;
+    fn from_str(value: &str) -> Result<Self, Self::Err> {
+        // split the string with '&'
+        let mut conditions = vec![];
+        let condstrs = value.split_terminator('&');
+        // parse each individual condition
+        for c in condstrs {
+            conditions.push(str_to_condition(c).ok_or(Error::DelegationParseError)?);
+        }
+        Ok(ConditionQuery { conditions })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    // parse condition strings
+    #[test]
+    fn parse_empty() -> Result<()> {
+        // given an empty condition query, produce an empty vector
+        let empty_cq = ConditionQuery { conditions: vec![] };
+        let parsed = "".parse::<ConditionQuery>()?;
+        assert_eq!(parsed, empty_cq);
+        Ok(())
+    }
+
+    // parse field 'kind'
+    #[test]
+    fn test_kind_field_parse() -> Result<()> {
+        let field = "kind".parse::<Field>()?;
+        assert_eq!(field, Field::Kind);
+        Ok(())
+    }
+    // parse field 'created_at'
+    #[test]
+    fn test_created_at_field_parse() -> Result<()> {
+        let field = "created_at".parse::<Field>()?;
+        assert_eq!(field, Field::CreatedAt);
+        Ok(())
+    }
+    // parse unknown field
+    #[test]
+    fn unknown_field_parse() {
+        let field = "unk".parse::<Field>();
+        assert!(field.is_err());
+    }
+
+    // parse a full conditional query with an empty array
+    #[test]
+    fn parse_kind_equals_empty() -> Result<()> {
+        // given an empty condition query, produce an empty vector
+        let kind_cq = ConditionQuery {
+            conditions: vec![Condition {
+                field: Field::Kind,
+                operator: Operator::Equals,
+                values: vec![],
+            }],
+        };
+        let parsed = "kind=".parse::<ConditionQuery>()?;
+        assert_eq!(parsed, kind_cq);
+        Ok(())
+    }
+    // parse a full conditional query with a single value
+    #[test]
+    fn parse_kind_equals_singleval() -> Result<()> {
+        // given an empty condition query, produce an empty vector
+        let kind_cq = ConditionQuery {
+            conditions: vec![Condition {
+                field: Field::Kind,
+                operator: Operator::Equals,
+                values: vec![1],
+            }],
+        };
+        let parsed = "kind=1".parse::<ConditionQuery>()?;
+        assert_eq!(parsed, kind_cq);
+        Ok(())
+    }
+    // parse a full conditional query with multiple values
+    #[test]
+    fn parse_kind_equals_multival() -> Result<()> {
+        // given an empty condition query, produce an empty vector
+        let kind_cq = ConditionQuery {
+            conditions: vec![Condition {
+                field: Field::Kind,
+                operator: Operator::Equals,
+                values: vec![1, 2, 4],
+            }],
+        };
+        let parsed = "kind=1,2,4".parse::<ConditionQuery>()?;
+        assert_eq!(parsed, kind_cq);
+        Ok(())
+    }
+    // parse multiple conditions
+    #[test]
+    fn parse_multi_conditions() -> Result<()> {
+        // given an empty condition query, produce an empty vector
+        let cq = ConditionQuery {
+            conditions: vec![
+                Condition {
+                    field: Field::Kind,
+                    operator: Operator::GreaterThan,
+                    values: vec![10000],
+                },
+                Condition {
+                    field: Field::Kind,
+                    operator: Operator::LessThan,
+                    values: vec![20000],
+                },
+                Condition {
+                    field: Field::Kind,
+                    operator: Operator::NotEquals,
+                    values: vec![10001],
+                },
+                Condition {
+                    field: Field::CreatedAt,
+                    operator: Operator::LessThan,
+                    values: vec![1665867123],
+                },
+            ],
+        };
+        let parsed =
+            "kind>10000&kind<20000&kind!10001&created_at<1665867123".parse::<ConditionQuery>()?;
+        assert_eq!(parsed, cq);
+        Ok(())
+    }
+    fn simple_event() -> Event {
+        Event {
+            id: "0".to_owned(),
+            pubkey: "0".to_owned(),
+            delegated_by: None,
+            created_at: 0,
+            kind: 0,
+            tags: vec![],
+            content: "".to_owned(),
+            sig: "0".to_owned(),
+            tagidx: None,
+        }
+    }
+    // Check for condition logic on event w/ empty values
+    #[test]
+    fn condition_with_empty_values() {
+        let mut c = Condition {
+            field: Field::Kind,
+            operator: Operator::GreaterThan,
+            values: vec![],
+        };
+        let e = simple_event();
+        assert!(!c.allows_event(&e));
+        c.operator = Operator::LessThan;
+        assert!(!c.allows_event(&e));
+        c.operator = Operator::Equals;
+        assert!(!c.allows_event(&e));
+        // Not Equals applied to an empty list *is* allowed
+        // (pointless, but logically valid).
+        c.operator = Operator::NotEquals;
+        assert!(c.allows_event(&e));
+    }
+
+    // Check for condition logic on event w/ single value
+    #[test]
+    fn condition_kind_gt_event_single() {
+        let c = Condition {
+            field: Field::Kind,
+            operator: Operator::GreaterThan,
+            values: vec![10],
+        };
+        let mut e = simple_event();
+        // kind is not greater than 10, not allowed
+        e.kind = 1;
+        assert!(!c.allows_event(&e));
+        // kind is greater than 10, allowed
+        e.kind = 100;
+        assert!(c.allows_event(&e));
+        // kind is 10, not allowed
+        e.kind = 10;
+        assert!(!c.allows_event(&e));
+    }
+    // Check for condition logic on event w/ multi values
+    #[test]
+    fn condition_with_multi_values() {
+        let mut c = Condition {
+            field: Field::Kind,
+            operator: Operator::Equals,
+            values: vec![0, 10, 20],
+        };
+        let mut e = simple_event();
+        // Allow if event kind is in list for Equals
+        e.kind = 10;
+        assert!(c.allows_event(&e));
+        // Deny if event kind is not in list for Equals
+        e.kind = 11;
+        assert!(!c.allows_event(&e));
+        // Deny if event kind is in list for NotEquals
+        e.kind = 10;
+        c.operator = Operator::NotEquals;
+        assert!(!c.allows_event(&e));
+        // Allow if event kind is not in list for NotEquals
+        e.kind = 99;
+        c.operator = Operator::NotEquals;
+        assert!(c.allows_event(&e));
+        // Always deny if GreaterThan/LessThan for a list
+        c.operator = Operator::LessThan;
+        assert!(!c.allows_event(&e));
+        c.operator = Operator::GreaterThan;
+        assert!(!c.allows_event(&e));
+    }
+}
--- a/src/error.rs
+++ b/src/error.rs
@@ -50,6 +50,8 @@ pub enum Error {
    HyperError(hyper::Error),
    #[error("Hex encoding error")]
    HexError(hex::FromHexError),
+    #[error("Delegation parse error")]
+    DelegationParseError,
    #[error("Unknown/Undocumented")]
    UnknownError,
 }
--- a/src/event.rs
+++ b/src/event.rs
@@ -1,4 +1,5 @@
 //! Event parsing and validation
+use crate::delegation::validate_delegation;
 use crate::error::Error::*;
 use crate::error::Result;
 use crate::nip05;
@@ -31,6 +32,8 @@ pub struct EventCmd {
 pub struct Event {
    pub id: String,
    pub(crate) pubkey: String,
+    #[serde(skip)]
+    pub(crate) delegated_by: Option<String>,
    pub(crate) created_at: u64,
    pub(crate) kind: u64,
    #[serde(deserialize_with = "tag_from_string")]
@@ -83,6 +86,7 @@ impl From<EventCmd> for Result<Event> {
        } else if ec.event.is_valid() {
            let mut e = ec.event;
            e.build_index();
+            e.update_delegation();
            Ok(e)
        } else {
            Err(EventInvalid)
@@ -110,6 +114,50 @@ impl Event {
        None
    }

+    // is this event delegated (properly)?
+    // does the signature match, and are conditions valid?
+    // if so, return an alternate author for the event
+    pub fn delegated_author(&self) -> Option<String> {
+        // is there a delegation tag?
+        let delegation_tag: Vec<String> = self
+            .tags
+            .iter()
+            .filter(|x| x.len() == 4)
+            .filter(|x| x.get(0).unwrap() == "delegation")
+            .take(1)
+            .next()?
+            .to_vec(); // get first tag
+
+        //let delegation_tag = self.tag_values_by_name("delegation");
+        // delegation tags should have exactly 3 elements after the name (pubkey, condition, sig)
+        // the event is signed by the delagatee
+        let delegatee = &self.pubkey;
+        // the delegation tag references the claimed delagator
+        let delegator: &str = delegation_tag.get(1)?;
+        let querystr: &str = delegation_tag.get(2)?;
+        let sig: &str = delegation_tag.get(3)?;
+
+        // attempt to get a condition query; this requires the delegation to have a valid signature.
+        if let Some(cond_query) = validate_delegation(delegator, delegatee, querystr, sig) {
+            // The signature was valid, now we ensure the delegation
+            // condition is valid for this event:
+            if cond_query.allows_event(self) {
+                // since this is allowed, we will provide the delegatee
+                Some(delegator.into())
+            } else {
+                debug!("an event failed to satisfy delegation conditions");
+                None
+            }
+        } else {
+            debug!("event had had invalid delegation signature");
+            None
+        }
+    }
+
+    /// Update delegation status
+    fn update_delegation(&mut self) {
+        self.delegated_by = self.delegated_author();
+    }
    /// Build an event tag index
    fn build_index(&mut self) {
        // if there are no tags; just leave the index as None
@@ -145,7 +193,7 @@ impl Event {
        self.pubkey.chars().take(8).collect()
    }

-    /// Retrieve tag values
+    /// Retrieve tag initial values across all tags matching the name
    pub fn tag_values_by_name(&self, tag_name: &str) -> Vec<String> {
        self.tags
            .iter()
@@ -269,6 +317,7 @@ mod tests {
        Event {
            id: "0".to_owned(),
            pubkey: "0".to_owned(),
+            delegated_by: None,
            created_at: 0,
            kind: 0,
            tags: vec![],
@@ -350,6 +399,7 @@ mod tests {
        let e = Event {
            id: "999".to_owned(),
            pubkey: "012345".to_owned(),
+            delegated_by: None,
            created_at: 501234,
            kind: 1,
            tags: vec![],
@@ -367,6 +417,7 @@ mod tests {
        let e = Event {
            id: "999".to_owned(),
            pubkey: "012345".to_owned(),
+            delegated_by: None,
            created_at: 501234,
            kind: 1,
            tags: vec![
@@ -388,11 +439,39 @@ mod tests {
        assert_eq!(v, vec!["foo", "bar", "baz"]);
    }

+    #[test]
+    fn event_no_tag_select() {
+        let e = Event {
+            id: "999".to_owned(),
+            pubkey: "012345".to_owned(),
+            delegated_by: None,
+            created_at: 501234,
+            kind: 1,
+            tags: vec![
+                vec!["j".to_owned(), "abc".to_owned()],
+                vec!["e".to_owned(), "foo".to_owned()],
+                vec!["e".to_owned(), "baz".to_owned()],
+                vec![
+                    "p".to_owned(),
+                    "aaaa".to_owned(),
+                    "ws://example.com".to_owned(),
+                ],
+            ],
+            content: "this is a test".to_owned(),
+            sig: "abcde".to_owned(),
+            tagidx: None,
+        };
+        let v = e.tag_values_by_name("x");
+        // asking for tags that don't exist just returns zero-length vector
+        assert_eq!(v.len(), 0);
+    }
+
    #[test]
    fn event_canonical_with_tags() {
        let e = Event {
            id: "999".to_owned(),
            pubkey: "012345".to_owned(),
+            delegated_by: None,
            created_at: 501234,
            kind: 1,
            tags: vec![
--- a/src/info.rs
+++ b/src/info.rs
@@ -35,7 +35,7 @@ impl From<config::Info> for RelayInfo {
            description: i.description,
            pubkey: i.pubkey,
            contact: i.contact,
-            supported_nips: Some(vec![1, 2, 9, 11, 12, 15, 16, 22]),
+            supported_nips: Some(vec![1, 2, 9, 11, 12, 15, 16, 22, 26]),
            software: Some("https://git.sr.ht/~gheartsfield/nostr-rs-relay".to_owned()),
            version: CARGO_PKG_VERSION.map(|x| x.to_owned()),
        }
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,6 +2,7 @@ pub mod close;
 pub mod config;
 pub mod conn;
 pub mod db;
+pub mod delegation;
 pub mod error;
 pub mod event;
 pub mod hexrange;
--- a/src/schema.rs
+++ b/src/schema.rs
@@ -20,7 +20,7 @@ pragma mmap_size = 536870912; -- 512MB of mmap
 "##;

 /// Latest database version
-pub const DB_VERSION: usize = 6;
+pub const DB_VERSION: usize = 7;

 /// Schema definition
 const INIT_SQL: &str = formatcp!(
@@ -40,6 +40,7 @@ event_hash BLOB NOT NULL, -- 4-byte hash
 first_seen INTEGER NOT NULL, -- when the event was first seen (not authored!) (seconds since 1970)
 created_at INTEGER NOT NULL, -- when the event was authored
 author BLOB NOT NULL, -- author pubkey
+delegated_by BLOB, -- delegator pubkey (NIP-26)
 kind INTEGER NOT NULL, -- event kind
 hidden INTEGER, -- relevant for queries
 content TEXT NOT NULL -- serialized json of event object
@@ -49,6 +50,7 @@ content TEXT NOT NULL -- serialized json of event object
 CREATE UNIQUE INDEX IF NOT EXISTS event_hash_index ON event(event_hash);
 CREATE INDEX IF NOT EXISTS created_at_index ON event(created_at);
 CREATE INDEX IF NOT EXISTS author_index ON event(author);
+CREATE INDEX IF NOT EXISTS delegated_by_index ON event(delegated_by);
 CREATE INDEX IF NOT EXISTS kind_index ON event(kind);

 -- Tag Table
@@ -152,6 +154,9 @@ pub fn upgrade_db(conn: &mut PooledConnection) -> Result<()> {
            if curr_version == 5 {
                curr_version = mig_5_to_6(conn)?;
            }
+            if curr_version == 6 {
+                curr_version = mig_6_to_7(conn)?;
+            }
            if curr_version == DB_VERSION {
                info!(
                    "All migration scripts completed successfully.  Welcome to v{}.",
@@ -348,3 +353,23 @@ fn mig_5_to_6(conn: &mut PooledConnection) -> Result<usize> {
    info!("vacuumed DB after tags rebuild in {:?}", start.elapsed());
    Ok(6)
 }
+
+fn mig_6_to_7(conn: &mut PooledConnection) -> Result<usize> {
+    info!("database schema needs update from 6->7");
+    // only change is adding a hidden column to events.
+    let upgrade_sql = r##"
+ALTER TABLE event ADD delegated_by BLOB;
+CREATE INDEX IF NOT EXISTS delegated_by_index ON event(delegated_by);
+PRAGMA user_version = 7;
+"##;
+    match conn.execute_batch(upgrade_sql) {
+        Ok(()) => {
+            info!("database schema upgraded v6 -> v7");
+        }
+        Err(err) => {
+            error!("update failed: {}", err);
+            panic!("database could not be upgraded");
+        }
+    }
+    Ok(7)
+}
--- a/src/subscription.rs
+++ b/src/subscription.rs
@@ -217,6 +217,17 @@ impl ReqFilter {
            .unwrap_or(true)
    }

+    fn delegated_authors_match(&self, event: &Event) -> bool {
+        if let Some(delegated_pubkey) = &event.delegated_by {
+            self.authors
+                .as_ref()
+                .map(|vs| prefix_match(vs, delegated_pubkey))
+                .unwrap_or(true)
+        } else {
+            false
+        }
+    }
+
    fn tag_match(&self, event: &Event) -> bool {
        // get the hashset from the filter.
        if let Some(map) = &self.tags {
@@ -248,7 +259,7 @@ impl ReqFilter {
            && self.since.map(|t| event.created_at > t).unwrap_or(true)
            && self.until.map(|t| event.created_at < t).unwrap_or(true)
            && self.kind_match(event.kind)
-            && self.authors_match(event)
+            && (self.authors_match(event) || self.delegated_authors_match(event))
            && self.tag_match(event)
            && !self.force_no_match
    }
@@ -308,6 +319,7 @@ mod tests {
        let e = Event {
            id: "foo".to_owned(),
            pubkey: "abcd".to_owned(),
+            delegated_by: None,
            created_at: 0,
            kind: 0,
            tags: Vec::new(),
@@ -326,6 +338,7 @@ mod tests {
        let e = Event {
            id: "abcd".to_owned(),
            pubkey: "".to_owned(),
+            delegated_by: None,
            created_at: 0,
            kind: 0,
            tags: Vec::new(),
@@ -344,6 +357,7 @@ mod tests {
        let e = Event {
            id: "abcde".to_owned(),
            pubkey: "".to_owned(),
+            delegated_by: None,
            created_at: 0,
            kind: 0,
            tags: Vec::new(),
@@ -363,6 +377,7 @@ mod tests {
        let e = Event {
            id: "abc".to_owned(),
            pubkey: "".to_owned(),
+            delegated_by: None,
            created_at: 50,
            kind: 0,
            tags: Vec::new(),
@@ -386,6 +401,7 @@ mod tests {
        let e = Event {
            id: "abc".to_owned(),
            pubkey: "".to_owned(),
+            delegated_by: None,
            created_at: 150,
            kind: 0,
            tags: Vec::new(),
@@ -407,6 +423,7 @@ mod tests {
        let e = Event {
            id: "abc".to_owned(),
            pubkey: "".to_owned(),
+            delegated_by: None,
            created_at: 50,
            kind: 0,
            tags: Vec::new(),
@@ -425,6 +442,7 @@ mod tests {
        let e = Event {
            id: "abc".to_owned(),
            pubkey: "".to_owned(),
+            delegated_by: None,
            created_at: 1001,
            kind: 0,
            tags: Vec::new(),
@@ -443,6 +461,7 @@ mod tests {
        let e = Event {
            id: "abc".to_owned(),
            pubkey: "".to_owned(),
+            delegated_by: None,
            created_at: 0,
            kind: 0,
            tags: Vec::new(),
@@ -461,6 +480,7 @@ mod tests {
        let e = Event {
            id: "123".to_owned(),
            pubkey: "abc".to_owned(),
+            delegated_by: None,
            created_at: 0,
            kind: 0,
            tags: Vec::new(),
@@ -479,6 +499,7 @@ mod tests {
        let e = Event {
            id: "123".to_owned(),
            pubkey: "bcd".to_owned(),
+            delegated_by: None,
            created_at: 0,
            kind: 0,
            tags: Vec::new(),
@@ -497,6 +518,7 @@ mod tests {
        let e = Event {
            id: "123".to_owned(),
            pubkey: "xyz".to_owned(),
+            delegated_by: None,
            created_at: 0,
            kind: 0,
            tags: Vec::new(),