← The evidence ledger
Evidence row 125527
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://x402-trust.com/v1/watch-endpoint-30d
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- f2208f5b3ad5f6fa144a7ba15e7556edf18f3dc5cadbd7a79e569c770e1ae0f4
- Leaf
- 0xae7addd69dd95d19fd94eadc7d83d36c0f63c8dedbbc38b75a24011c266ea166
What was observed
{
"endpoints": [
[
"x402",
"https://x402-trust.com/v1/watch-endpoint-30d"
]
],
"name": "x402 Trust Watch 30d",
"owner_address": "0xbbecbe90f28632a9d52ed67b33b43767b8c89285",
"raw": {
"accepts": [
{
"amount": "200000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"outputSchema": {
"input": {
"bodyFields": {
"delivery": {
"description": "Optional push delivery: { webhook_url(s), slack_url(s) } (https public hosts, max 5 each). Each field accepts a single URL string or an array of URLs; webhook_url(s) = signed HTTPS webhook; slack_url(s) = Slack or Discord incoming webhook. All URLs are connection-tested before you're charged. Polling is always available.",
"required": false,
"type": "object"
},
"endpoint": {
"description": "Full x402 resource URL to watch (must be in our observation set).",
"required": true,
"type": "string"
},
"events": {
"description": "Event types to subscribe to (default all): payto_change, price_change, asset_network_change, spec_regression, delisting, liveness_down, liveness_recovered, liveness_flapping.",
"required": false,
"type": "array"
},
"liveness_sensitivity_n": {
"description": "Consecutive missed probes before a liveness_down is surfaced to you (1=paranoid … 10=relaxed; default 2).",
"required": false,
"type": "number"
}
},
"bodyType": "json",
"headerFields": {
"PAYMENT-SIGNATURE": {
"description": "Base64-encoded JSON PaymentPayload; auto-filled by x402 clients.",
"required": true,
"type": "string"
}
},
"method": "POST",
"type": "http"
},
"output": {
"cancel_url": "string",
"delivery": "object",
"edit_url": "string",
"expires_at": "number",
"liveness_sensitivity_n": "number",
"next_steps": "array",
"poll_url": "string",
"probe_interval_sec": "number",
"renew_url": "string",
"secret": "string",
"subscribed_events": "array | 'all'",
"watch_id": "string",
"watched": "array"
}
},
"payTo": "0xbBECBE90F28632a9d52ed67b33b43767b8c89285",
"scheme": "exact"
}
],
"description": "Monitor one endpoint for 30 days: alerts on payTo, price, asset or network changes, 402-spec regressions, delisting, and liveness. Push to signed HTTPS webhooks or Slack/Discord URLs (max 5 each), all connection-tested before payment. Returns a one-time bearer secret; edit URLs or cancel early via bearer-authed PATCH/DELETE /v1/watch/{id}, or poll the append-only event log.",
"extensions": {
"bazaar": {
"category": "monitoring",
"discoverable": true,
"info": {
"input": {
"body": {
"delivery": {
"slack_url": "https://hooks.slack.com/services/…",
"webhook_urls": [
"https://your-app.example.com/x402-alerts",
"https://backup.example.com/x402-alerts"
]
},
"endpoint": "https://api.example.com/v1/thing",
"events": [
"payto_change",
"price_change",
"delisting"
],
"liveness_sensitivity_n": 2
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"cancel_url": "/v1/watch/01J8Z9K7X4QmY9example",
"delivery": {
"poll": true,
"slack": [],
"webhook": [
"https://your-app.example.com/x402-alerts"
]
},
"edit_url": "/v1/watch/01J8Z9K7X4QmY9example",
"expires_at": 1751328000000,
"liveness_sensitivity_n": 2,
"next_steps": [
{
"action": "store_secret",
"details": "Store `secret` in a secrets manager. It is shown only once; we only store its SHA-256 hash.",
"step": 1
},
{
"action": "poll_events",
"cursor_hint": "Start without `since`; then use the highest returned `event_id` as the next `since` value.",
"cursor_param": "since",
"details": "Read the append-only event log. Nothing that happened between two polls is lost.",
"headers": {
"Authorization": "Bearer wsk_…"
},
"method": "GET",
"step": 2,
"url": "/v1/watch/01J8Z9K7X4QmY9example/events"
},
{
"action": "verify_webhook",
"details": "If you configured webhook_url(s), verify every incoming POST: the `x-signature` header must equal `sha256=` + HMAC-SHA256(body) keyed by hex(sha256(secret)) (NOT the raw secret). A `connection_test` ping is sent during setup — see delivery.connection_test.",
"enabled": true,
"step": 3
},
{
"action": "edit",
"details": "Change webhook/Slack URLs, liveness sensitivity, or subscribed events for free. PATCH with Authorization: Bearer <secret>; new URLs are connection-tested.",
"headers": {
"Authorization": "Bearer wsk_…"
},
"method": "PATCH",
"step": 4,
"url": "/v1/watch/01J8Z9K7X4QmY9example"
},
{
"action": "cancel",
"details": "Stop monitoring early (probing drops to normal cadence immediately). Free, bearer-authed.",
"headers": {
"Authorization": "Bearer wsk_…"
},
"method": "DELETE",
"step": 5,
"url": "/v1/watch/01J8Z9K7X4QmY9example"
},
{
"action": "renew",
"details": "Extend the watch by 30 days before expires_at. The secret stays the same.",
"method": "POST",
"step": 6,
"url": "/v1/watch/01J8Z9K7X4QmY9example/renew"
}
],
"poll_url": "/v1/watch/01J8Z9K7X4QmY9example/events",
"probe_interval_sec": 300,
"renew_url": "/v1/watch/01J8Z9K7X4QmY9example/renew",
"secret": "wsk_… (shown once — store it now)",
"subscribed_events": "all",
"watch_id": "01J8Z9K7X4Qmy9example",
"watched": [
{
"endpoint_id": 123,
"resource": "https://api.example.com/v1/thing"
}
]
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"delivery": {
"properties": {
"slack_url": {
"type": "string"
},
"webhook_urls": {
"items": {
"type": "string"
},
"type": "array"
}
},
"required": [
"webhook_urls",
"slack_url"
],
"type": "object"
},
"endpoint": {
"type": "string"
},
"events": {
"items": {
"type": "string"
},
"type": "array"
},
"liveness_sensitivity_n": {
"type": "integer"
}
},
"required": [
"endpoint",
"events",
"liveness_sensitivity_n",
"delivery"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
]
},
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
]
},
"type": {
"const": "http"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"cancel_url": {
"type": "string"
},
"delivery": {
"properties": {
"poll": {
"type": "boolean"
},
"slack": {
"type": "array"
},
"webhook": {
"items": {
"type": "string"
},
"type": "array"
}
},
"required": [
"poll",
"webhook",
"slack"
],
"type": "object"
},
"edit_url": {
"type": "string"
},
"expires_at": {
"type": "integer"
},
"liveness_sensitivity_n": {
"type": "integer"
},
"next_steps": {
"items": {
"properties": {
"action": {
"type": "string"
},
"cursor_hint": {
"type": "string"
},
"cursor_param": {
"type": "string"
},
"details": {
"type": "string"
},
"enabled": {
"type": "boolean"
},
"headers": {
"properties": {
"Authorization": {
"type": "string"
}
},
"required": [
"Authorization"
],
"type": "object"
},
"method": {
"type": "string"
},
"step": {
"type": "integer"
},
"url": {
"type": "string"
}
},
"required": [
"step",
"action",
"details"
],
"type": "object"
},
"type": "array"
},
"poll_url": {
"type": "string"
},
"probe_interval_sec": {
"type": "integer"
},
"renew_url": {
"type": "string"
},
"secret": {
"type": "string"
},
"subscribed_events": {
"type": "string"
},
"watch_id": {
"type": "string"
},
"watched": {
"items": {
"properties": {
"endpoint_id": {
"type": "integer"
},
"resource": {
"type": "string"
}
},
"required": [
"endpoint_id",
"resource"
],
"type": "object"
},
"type": "array"
}
},
"required": [
"watch_id",
"secret",
"poll_url",
"renew_url",
"edit_url",
"cancel_url",
"expires_at",
"watched",
"probe_interval_sec",
"subscribed_events",
"liveness_sensitivity_n",
"delivery",
"next_steps"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
},
"tags": [
"x402",
"watch",
"monitoring",
"alerts"
]
}
},
"lastUpdated": "2026-10-15T08:40:03.743Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-15T08:40:03.303Z"
},
"resource": "https://x402-trust.com/v1/watch-endpoint-30d",
"serviceName": "x402 Trust Watch 30d",
"tags": [
"x402",
"trust",
"reliability",
"monitoring",
"uptime"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Monitor one endpoint for 30 days: alerts on payTo, price, asset or network changes, 402-spec regressions, delisting, and liveness. Push to signed HTTPS webhooks or Slack/Discord URLs (max 5 each), all connection-tested before payment. Returns a one-time bearer secret; edit URLs or cancel early via bearer-authed PATCH/DELETE /v1/watch/{id}, or poll the append-only event log."
}What the leaf hashes
{"body":"f2208f5b3ad5f6fa144a7ba15e7556edf18f3dc5cadbd7a79e569c770e1ae0f4","id":125527,"kind":"listing","method":"baseline/1","observed_us":1793025626429788,"prev":null,"subject":"x402_bazaar:https://x402-trust.com/v1/watch-endpoint-30d","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
- 0xae7b00a26371727e69befa45a520421810cef2904c8b20fcd3e568a03599df93
- 0x60b052af0a7a301d94dea276c6a6d46f184f808df499a48954abb90e25a2ac5e
- 0x41579227a837b11f71ef0b771a6968b15da2d23423653860a4b6608de72ee2eb
- 0x47fd71c21a7a10c45f21e7d345bd4d38c7484befb24f99e7a1aece43e5736486
- 0xbe030c9b4dbe339eddb3687c9860f3cc50faeda43b2fcbdc04a9ad14b8864a4c
- 0xb9e5189e57c760503f0271852f6427c8b345a46d1a01657e40db9132d17df69b
- 0x0b52ad75ebc6548eff785442764e90ba17d10770b47cd8f82e2cf6e3a06e4b8f
- 0xa6cdf846f6205ff5adb5880555ead55889d242fae065fffd37912126edee87cf
- 0x0842d8c43250cebd4530846eeaffcf2aa2299fb599d085da998ee4163e96d607
- 0xc5e28a96a833c7f6f25661bd128ed0a3708d099cd3594f653200c1fee17d99d4
- 0x3ed84d9e7fe1a3a53a5614d97b48e393d726ca06109e83696375afe5ad01fd8f
- 0x51f06c175a7c946ebe50ef243d6f9370a8fe85c996e53eff19ffcc4585ea8c18
- 0xe292b5a99219f136bce6647ce74b21240a1c7331d2475b1839220fd363c94217
- 0x3b4dba7d874fc323b0a364140a9c60f37bf547fe671897653118a9873fe03420
- 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
- 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
- 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae