Encrypted evidence retention
Encrypted evidence retention: store a client-encrypted agent session envelope for 7 years, hash-bound to an attestation
Answeringour last check, 2026-09-24
1 of 1checks answered this week
648 msmedian answer time
$0.05listed price per call
$0.05price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://rubric-protocol.com/v1/x402/evidence-retain
| Category | Commerce and shopping |
|---|---|
| Provider host | rubric-protocol.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.05 | 648 ms |
Example input (from the provider)
{
"body": {
"attestationId": "2791af2e-1c95-4a2d-bb49-985f6486f5ab",
"cipherHash": "sha3-256:4cca\u2026",
"envelope": {
"ct": "base64(ciphertext)",
"eph": "base64(32B)",
"iv": "base64(12B)",
"tag": "base64(16B)",
"v": 1
},
"eventsHash": "sha3-256:9c1f\u2026",
"opening": {
"data": {
"eventsHash": "sha3-256:9c1f\u2026",
"session": "agent-session-0f2a91c4",
"spec": "rubric-harness-attest/0.1"
},
"salt": "64 hex - SHA-256(payloadKey + ':rubric-commit-v1')"
},
"sessionId": "agent-session-0f2a91c4"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"type": "object"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"additionalProperties": false,
"properties": {
"example": {},
"format": {
"type": "string"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}