Verify an OpenTimestamps proof (.ots as base64, from btc-timestamp or any ots cl
Verify an OpenTimestamps proof (.ots as base64, from btc-timestamp or any ots client): upgrades pending proofs from the calendars, checks each Bitcoin attestation against the real block's merkle root and returns status (confirmed, pending), block height and time, the upgraded proof, and whether your text, hash or URL matches.
Answeringour last check, 2026-10-11
1 of 1checks answered this week
894 msmedian answer time
$0.003listed price per call
$0.003price 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://agentsvc.io/api/v1/proxy/btc-timestamp-verify
| Category | Everything else |
|---|---|
| Provider host | agentsvc.io |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 3 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-11 | valid payment request | 402 | $0.003 | 894 ms |
Example input (from the provider)
{
"body": {
"ots_base64": "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",
"text": "Hello World!\n"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"hash": {
"description": "SHA-256 hex to compare",
"type": "string"
},
"ots_base64": {
"description": ".ots file as base64",
"type": "string"
},
"text": {
"description": "Original content to compare",
"type": "string"
},
"url": {
"description": "URL whose current bytes to compare",
"type": "string"
}
},
"required": [
"ots_base64"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"bitcoin": {
"type": "object"
},
"match": {
"type": "object"
},
"ots_base64": {
"type": "string"
},
"status": {
"type": "string"
}
},
"type": "object"
},
"success": {
"type": "boolean"
}
},
"required": [
"success",
"data"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}