Pay $0.01 USDC to create an immutable timestamped statement
Pay $0.01 USDC to create an immutable timestamped statement. The server assigns recorded_at in UTC. Statements are public, permanent, and cannot be edited. Max body size: 10 KB. Network: Base Mainnet. Each request records one statement and returns public proof URLs.
Answeringour last check, 2026-10-19
1 of 1checks answered this week
780 msmedian answer time
$0.01listed price per call
$0.01price 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://stamp.0000402.xyz/stamp
| Category | Everything else |
|---|---|
| Provider host | stamp.0000402.xyz |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-19 | valid payment request | 402 | $0.01 | 780 ms |
Example input (from the provider)
{
"body": {
"agent": "omniac-research-v3",
"body": "Thesis: spot ETF flows stay strong, macro loosens, and BTC breaks prior cycle expectations.",
"source_url": "https://example.com/research-note",
"title": "BTC will close above $150k before 2027."
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"agent": {
"description": "Optional public agent or author name (max 80 chars).",
"maxLength": 80,
"type": "string"
},
"body": {
"description": "Required statement body stored exactly as submitted. The server assigns the proof timestamp. Max 10 KB.",
"maxLength": 10000,
"type": "string"
},
"source_url": {
"description": "Optional supporting URL for the statement. Must be absolute http/https if provided.",
"maxLength": 500,
"type": "string"
},
"title": {
"description": "Optional short public headline for the statement (max 120 chars).",
"maxLength": 120,
"type": "string"
}
},
"required": [
"body"
],
"type": "object"
},
"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": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}