2.5 KiB
NIP-77: Trust
draft optional wot
This NIP defines a standard for expressing trust in another user. Trust has a specific context and a few optional parameters. A replaceable event of kind:30077 is used for this purpose.
Trust
The user who signs the Trust event is the truster.
The pubkey of the trusted user MUST be specified in the "p" tag of the event. Optionally the relay can be specified where the trusted user's trust events can be found.
The trust context MUST be specified in the "c" tag.
The special value * represents general trust in the person.
An arbitrary string value (like science) can be used to restrict validity of trust. Alternatively, context can be a reference to external description of the context, using naddr... or nevent... ID's.
The optional tag "score" SHOULD be an integer between 0 and 100, inclusive. 100 means full trust and 0 means that the person is not trusted in the specified context at all.
A Trust event is transitive by default (e.g. Alice trusts Bob, Bob trusts Charlie, therefore Alice trusts Charlie). Non-transitive Trust events MUST contain the ["transitive", "false"] tag.
A Trust event can be revoked by its author. Revoked Trust events MUST contain the ["revoked", "true"] tag.
Additional tags MAY be used to further describe other properties of the Trust event.
Verbal description of circumstances MAY be added to the "content" field.
The "d" tag of the replaceable event MUST be a concatenation of the trusted user's pubkey and the context, using a "/" as a separator between them.
Trust event definition
{
"id": "<id-of-trust-event>",
"kind": 30077,
"tags": [
["d", "<pubkey-of-trusted-user>/<context>"],
["p", "<pubkey-of-trusted-user>", ["<relay1>", ,..]],
["c", "<context>"],
["transitive", "false"],
["score", "100"],
["confidence", "80"],
...
],
"content": "We worked 2 years together in the factory.",
"pubkey": "<pubkey-of-truster>",
"sig": "<signature-of-truster>"
...
}
Querying
Trust events can be fetched by REQ filters specifying the truster ("authors": ["..."]), the trusted user ("#p": ["..."]) or the context ("#c": ["..."]), or any combinations of them.
Notes
Trust events MAY be sent privately to users, relays or filtering algorithms using NIP-59 gift wraps.
When a transitive Trust event is revoked, the whole sub-tree of the web-of-trust disappears. Clients that do the revoking MAY offer the user a way to pick users from the removed sub-tree, if applicable.