Roundhouse

satledger timestamp receipt

Submit a SHA-256 digest, receive a Time-Stamp Authority's signed RFC 3161 token over it. Proof that the data you hashed existed at that time, verifiable against the authority without trusting or contacting this service.

DataLiveeip155:8453Exactvia wellknown:api.satledger.org
https://api.satledger.org/x402/receipt
TimestampRfc3161ProvenanceNotarizationAudit
Calls · 30d
2↑ 100%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 27 snapshots so far.
$1.10
Verified settled volume
4 settlements proven x402 by their on-chain EIP-3009 marker.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xAC6A3A729672a786182e4A7BA29c78587fafE3b4

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "PAYMENT-SIGNATURE is required, by POST",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xAC6A3A729672a786182e4A7BA29c78587fafE3b4",
      "amount": "50000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0xAC6A3A729672a786182e4A7BA29c78587fafE3b4",
      "amount": "500000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://api.satledger.org/x402/receipt",
    "mimeType": "application/json",
    "description": "One RFC 3161 timestamp receipt over a digest you supply. No account and no API key: the response is the whole deliverable. Your data is never sent - only its hash - and nothing about the request is retained here."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "name": "satledger timestamp receipt",
        "input": {
          "body": {
            "digest": "9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "digest": "9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08",
            "verify": "openssl ts -reply -in token.der -text",
            "tsa_url": "https://freetsa.org/tsr",
            "timestamp_token_der_b64": "MIIS...(RFC 3161 token, base64)"
          }
        },
        "whenToUse": "Call this when you need to show later that something existed now - a model output, a decision, a document - and the person you will show it to has no reason to trust you. One call, no account. Keep the token; it is the evidence.",
        "description": "Submit a SHA-256 digest, receive a Time-Stamp Authority's signed RFC 3161 token over it. Proof that the data you hashed existed at that time, verifiable against the authority without trusting or contacting this service."
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "oneOf": [
                  {
                    "required": [
                      "digest"
                    ]
                  },
                  {
                    "required": [
                      "digests"
                    ]
                  }
                ],
                "properties": {
                  "digest": {
                    "type": "string",
                    "pattern": "^[0-9a-fA-F]{64}$",
                    "description": "SHA-256 of whatever you want timestamped, as 64 hex characters. Hash it yourself; the data never leaves your side."
                  },
                  "digests": {
                    "type": "array",
                    "items": {
                      "type": "string",
                      "pattern": "^[0-9a-fA-F]{64}$"
                    },
                    "maxItems": 10,
                    "minItems": 1,
                    "description": "Up to 10 SHA-256 hashes. Requires the batch price; the single price permits one."
                  }
                },
                "description": "Send `digest` for one, or `digests` for up to 10 in a single call and a single payment. A batch is bound to one timestamp by a Merkle root, and each digest comes back with the proof that binds it there."
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "type": "string"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.05USDC≈ $0.05 USD
on Base · exact scheme

Pay 0.05 USDC on Base to 0xAC6A…fE3b4. The signed payment is good for 1 minute.

Paid to
0xAC6A…fE3b4
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
50000 smallest units
0.5USDC≈ $0.5 USD
on Base · exact scheme

Pay 0.5 USDC on Base to 0xAC6A…fE3b4. The signed payment is good for 1 minute.

Paid to
0xAC6A…fE3b4
USD Coin contract
0x8335…02913
Payment window
1 minute
As published
500000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xAC6A3A729672a786182e4A7BA29c78587fafE3b4",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  },
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xAC6A3A729672a786182e4A7BA29c78587fafE3b4",
    "amount": "500000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "name": "satledger timestamp receipt",
      "input": {
        "body": {
          "digest": "9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "digest": "9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08",
          "verify": "openssl ts -reply -in token.der -text",
          "tsa_url": "https://freetsa.org/tsr",
          "timestamp_token_der_b64": "MIIS...(RFC 3161 token, base64)"
        }
      },
      "whenToUse": "Call this when you need to show later that something existed now - a model output, a decision, a document - and the person you will show it to has no reason to trust you. One call, no account. Keep the token; it is the evidence.",
      "description": "Submit a SHA-256 digest, receive a Time-Stamp Authority's signed RFC 3161 token over it. Proof that the data you hashed existed at that time, verifiable against the authority without trusting or contacting this service."
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "oneOf": [
                {
                  "required": [
                    "digest"
                  ]
                },
                {
                  "required": [
                    "digests"
                  ]
                }
              ],
              "properties": {
                "digest": {
                  "type": "string",
                  "pattern": "^[0-9a-fA-F]{64}$",
                  "description": "SHA-256 of whatever you want timestamped, as 64 hex characters. Hash it yourself; the data never leaves your side."
                },
                "digests": {
                  "type": "array",
                  "items": {
                    "type": "string",
                    "pattern": "^[0-9a-fA-F]{64}$"
                  },
                  "maxItems": 10,
                  "minItems": 1,
                  "description": "Up to 10 SHA-256 hashes. Requires the batch price; the single price permits one."
                }
              },
              "description": "Send `digest` for one, or `digests` for up to 10 in a single call and a single payment. A batch is bound to one timestamp by a Merkle root, and each digest comes back with the proof that binds it there."
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
—
Last indexed by Roundhouse
2026-09-18 20:15Z
Last enriched (probe, favicon, geo)
2026-09-18 20:45Z
x402 version
2
Max timeout
60s
Liveness probe
HTTP 402
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 27 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service satledger timestamp receipt and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=satledger%20timestamp%20receipt'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://api.satledger.org/x402/receipt, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.