← The evidence ledger
Evidence row 1261890
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://crosscheckapi.com/v1/accept-lite
- Recorded
- Previous row
- #751224
- Body SHA-256
- 2765018453456dc1bb84e1faf776dc104e4edf0fcff276826145e69aa9f879ab
- Leaf
- 0x89ed98cd97ea470c034d355d6abad1910ef0c930785081ff09116c07fd999b4a
What was observed
{
"endpoints": [
[
"x402",
"https://crosscheckapi.com/v1/accept-lite"
]
],
"name": "Verify deliverable, code only",
"owner_address": "0x2fe63598ad75281fa36d271f4c155a074296a943",
"raw": {
"accepts": [
{
"amount": "5000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"paymentFlow": "upfront",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x2Fe63598Ad75281fA36d271f4c155a074296A943",
"scheme": "exact"
},
{
"amount": "5000",
"asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
"extra": {
"name": "USDC",
"paymentFlow": "upfront",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:84532",
"payTo": "0x2Fe63598Ad75281fA36d271f4c155a074296A943",
"scheme": "exact"
}
],
"description": "Verify output another AI agent hands back, by code alone, for $0.005: no model call, answers in about a second. Recomputes the deliverable's written sums, totals, percentages, dates, weekdays, time spans, unit conversions, and list counts; checks lengths the task asks for; flags placeholders and prompt injection; measures words, items, and JSON shape. Signed receipt, tier lite. For every requirement judged, use accept ($0.03).",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"deliverable": "Q3 spend came to $8,450 in total ($4,200 on ads, $2,850 on tools, and $1,900 on contractors).",
"task": "Summarize Q3 spend by category in under 50 words."
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"job_id": "chk_6c2e9a0f1d3b4e5a8c7d6e5f4a3b2c1d",
"receipt": {
"body": {
"kind": "accept_lite",
"seq": 4
},
"hash": "...",
"sig": "..."
},
"result_token": "...",
"result_url": "https://crosscheckapi.com/v1/checks/chk_6c2e9a0f1d3b4e5a8c7d6e5f4a3b2c1d",
"share_url": "https://crosscheckapi.com/r/...",
"status": "done",
"verdict": {
"code_checks": {
"found": 1,
"measured": {
"words": 17
},
"wrong_date_spans": [],
"wrong_lengths": [],
"wrong_list_counts": [],
"wrong_percentages": [],
"wrong_sums": [
{
"comes_to": "8,950",
"says": "$8,450",
"sentence": "Q3 spend came to $8,450 in total ($4,200 on ads, $2,850 on tools, and $1,900 on contractors)."
}
],
"wrong_superlatives": [],
"wrong_time_spans": [],
"wrong_time_zones": [],
"wrong_units": [],
"wrong_weekdays": []
},
"injection_suspected": false,
"note": "Lite tier: code only, no model call. Code checked the deliverable's own sums, percentages, dates, time spans, time zones, units, list counts, and lengths the task asks for; whether it is a placeholder; and known prompt-injection phrases; and measured its words, list items, and JSON shape. It did not read the task's requirements one by one; POST /v1/accept ($0.03) for that.",
"pass": false,
"placeholder": false,
"problems": 1,
"result": "problems_found",
"summary": "Code found 1 problem in the deliverable: 1 wrong figure or date (see code_checks).",
"tier": "lite"
}
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"deliverable": {
"description": "What came back, exactly as received",
"minLength": 1,
"type": "string"
},
"payment_network": {
"description": "CAIP-2 network of payment_tx, default eip155:8453",
"type": "string"
},
"payment_tx": {
"description": "Optional: the transaction you paid the other agent with; verified on-chain and bound to the receipt",
"pattern": "^0x[0-9a-fA-F]{64}$",
"type": "string"
},
"ref": {
"description": "Optional: the hash of a crosscheck receipt that referred you. Its wallet earns check credits from your first 90 days of spend.",
"pattern": "^[0-9a-f]{64}$",
"type": "string"
},
"reference": {
"description": "Optional order id or transaction hash to record on the receipt",
"maxLength": 200,
"type": "string"
},
"task": {
"description": "The task you gave the other agent or service, including every requirement",
"minLength": 1,
"type": "string"
}
},
"required": [
"task",
"deliverable"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"job_id": {
"type": "string"
},
"receipt": {
"description": "Ed25519-signed receipt: body (canonical JSON), hash (sha256 hex), sig (base64url)",
"properties": {
"body": {
"type": "object"
},
"hash": {
"type": "string"
},
"sig": {
"type": "string"
}
},
"type": "object"
},
"result_token": {
"type": "string"
},
"result_url": {
"type": "string"
},
"retry_after_seconds": {
"type": "integer"
},
"status": {
"enum": [
"done",
"pending",
"unserved",
"rejected"
],
"type": "string"
},
"verdict": {
"properties": {
"code_checks": {
"description": "What code found (wrong_sums, wrong_percentages, wrong_weekdays, wrong_date_spans, wrong_time_spans, wrong_time_zones, wrong_units, wrong_list_counts, wrong_superlatives, wrong_lengths) and measured (words, list_items, json, json_items)",
"type": "object"
},
"injection_suspected": {
"type": "boolean"
},
"note": {
"type": "string"
},
"pass": {
"description": "True only when code found no problem; never means the task was met",
"type": "boolean"
},
"placeholder": {
"type": "boolean"
},
"problems": {
"type": "integer"
},
"result": {
"enum": [
"problems_found",
"no_problems_found"
],
"type": "string"
},
"summary": {
"type": "string"
},
"tier": {
"enum": [
"lite"
],
"type": "string"
}
},
"required": [
"tier",
"result",
"pass",
"summary",
"problems",
"code_checks",
"placeholder",
"injection_suspected",
"note"
],
"type": "object"
}
},
"required": [
"job_id",
"status"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1790220967/bazaar-icons/4124578678809cf3.png",
"lastUpdated": "2026-10-30T10:18:25.97Z",
"quality": {
"l30DaysTotalCalls": 4,
"l30DaysUniquePayers": 3,
"lastCalledAt": "2026-10-30T10:18:25.556Z"
},
"resource": "https://crosscheckapi.com/v1/accept-lite",
"serviceName": "Verify deliverable, code only",
"tags": [
"verify-output",
"acceptance-test",
"quality-check",
"escrow",
"agent-to-agent"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Verify output another AI agent hands back, by code alone, for $0.005: no model call, answers in about a second. Recomputes the deliverable's written sums, totals, percentages, dates, weekdays, time spans, unit conversions, and list counts; checks lengths the task asks for; flags placeholders and prompt injection; measures words, items, and JSON shape. Signed receipt, tier lite. For every requirement judged, use accept ($0.03)."
}What the leaf hashes
{"body":"2765018453456dc1bb84e1faf776dc104e4edf0fcff276826145e69aa9f879ab","id":1261890,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793385517148169,"prev":751224,"subject":"x402_bazaar:https://crosscheckapi.com/v1/accept-lite","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (243099 rows).
- 0x89ed01646c769372f19e12cc3eaad5b16fa0917aa7854314b0e104f0ce8afeac
- 0x395e43d4612e4b368c12ae6fb9aa6b049913b81c792c3c7a869dbb7ca43157f7
- 0xb7c9d0afb3f0affc38e4e7a77f1b7065c5d54b324e1e5beb9cf2fa90b5774cd0
- 0xc443cf7e8d9d91825619517f7cd20def79df26613de4f1ce645cb1b4fa9a429b
- 0x485e80357653db881bb7603da6193608d19e7bbea8a1d9a18ea89841b7c2b0d9
- 0x454eaa89e0bdd9c69d24a432349109d0b944b0f3134614c0155c2ef185732a13
- 0x53ce8421e8777d694d198bb8854e15c5562ace7dcd90994994aebaabace43c50
- 0xc7e369f1ce01d55c233b6d91826b41b6191f14b1445398ff1fc61ca9fce805a6
- 0x01dadd2c8a5f0407b777dd95e6637413e1fee3ee35055399e3af841c4c794a8f
- 0xae7016723a85bbe0f275d4bdab054c34ce459c1f3e9c318862d1ab072ceb12de
- 0xfc5c2bf38d2f1a420c6f00df31586bfc35f29db1db4847e0fd137be690d7f72a
- 0x81916dd936179b607dcb6a7343b91855bf97f0b7c7bd2a7f252b2fdf82e041da
- 0x0d06f2034510d710ecc68d1e2023d7419591dfad7a7afe8433d9d14c42fb1ce4
- 0xc819bc399b4972a3a1ce1897d0bce2138291f900ae9bdb4afaf8fa23d651b490
- 0xe722b5213af778d8f1621b8b0b61f957ac8d8bb43a780aed8989bfc357e5bc58
- 0x835211170e79bdce1a823ec914e3532e128f77751e9074286da35091b0200284
- 0x61ef83255d34604cb052882568ca1d1386ac3cfb8284509715bc1734cff77831
- 0x0c43c73b62a5d49ee1444b5dc4195fc5b16b141d3f4458e2e9fbd5fd6ecb367d
- Day root
- 0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875
- Chained
- 0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822
- Published
- On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861