Roundhouse AI

Immuta Seal

Notarize a document on-chain: permanent, independently verifiable proof that a SHA-256 hash existed at this moment. Send only the hash - the document never leaves your system. Returns a blockchain transaction receipt.

OtherLiveeip155:8453Exactvia cdp
https://api.immuta.app/seal
NotaryTimestampingProof
Settlements · 30d
38↓ 100%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$7.06
Verified settled volume
65 settlements proven x402 by their on-chain EIP-3009 marker.
$1.00
Listed price
As published in the catalog. Always read the live 402 before paying.
7
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-07-14 18:53Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xB60a3181303953E6F909ba4d3b09282BEefCDD6B

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.

Accepts

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

1USDC≈ $1 USD
on Base · exact scheme

Pay 1 USDC on Base to 0xB60a…CDD6B. The signed payment is good for 5 minutes.

Paid to
0xB60a…CDD6B
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
1000000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xB60a3181303953E6F909ba4d3b09282BEefCDD6B",
    "amount": "1000000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "note": "signed 2026-07-13",
          "label": "contract-v2-final",
          "sha256": "9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "block": 27024755,
          "chain": "pulsechain:369",
          "label": "contract-v2-final",
          "sealed": true,
          "sha256": "9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08",
          "verify": "call getRecord(sha256, submitter) on the Immuta contract",
          "tx_hash": "0x2dafb939...",
          "sealed_at": 1783979285,
          "submitter": "0x4A4f...ef19"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "sha256"
              ],
              "properties": {
                "note": {
                  "type": "string",
                  "maxLength": 500,
                  "description": "Optional note stored on-chain (up to 500 bytes)"
                },
                "label": {
                  "type": "string",
                  "maxLength": 100,
                  "description": "Short label stored on-chain with the record (1-100 bytes)"
                },
                "sha256": {
                  "type": "string",
                  "pattern": "^[0-9a-fA-F]{64}$",
                  "description": "SHA-256 hash (64 hex chars) of the document to notarize. Compute locally; do not send the document."
                }
              }
            },
            "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
2026-07-14 18:53Z
Last indexed by Roundhouse
2026-08-04 03:20Z
Last enriched (probe, favicon, geo)
2026-09-21 16:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 405
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

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. 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 Immuta Seal 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=Immuta%20Seal'
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.immuta.app/seal, 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.