← The evidence ledger
Evidence row 121824
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://stack.halowerk.com/stack/articles/calcom
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- ac760b6d5ef2a5d65777860c8253aba6d7aa733e29b5ee77989bcecfdc4ba078
- Leaf
- 0x798ac1c5871c8a2c2c7bc65ac4786b123b959f9cff32ec8bee729f6be4be0a49
What was observed
{
"endpoints": [
[
"x402",
"https://stack.halowerk.com/stack/articles/calcom"
]
],
"name": "Tech Detect",
"owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
"raw": {
"accepts": [
{
"amount": "5000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"asset": "USDC",
"assetTransferMethod": "eip3009",
"eip712Domain": {
"chainId": 8453,
"name": "USD Coin",
"verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"version": "2"
},
"name": "USD Coin",
"network_name": "Base Mainnet",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"scheme": "exact"
}
],
"description": "Purpose-bound Cal.com observation (booking) using the existing fresh Stack-Monitor. Returns stack_calcom_decision, direct versus inferred status, evidence, optional version difference against a caller-owned baseline and reusable snapshot. Missing fingerprints do not prove absence. No background scheduling, CVE, compatibility or installed-extension inventory. Existing outbound safeguards remain in the injected motor. One public HTTPS root domain, up to150 baseline technologies; 9s timeout.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"url": "https://example.com/"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"previous": {
"additionalProperties": false,
"properties": {
"observed_at": {
"maxLength": 40,
"type": "string"
},
"technologies": {
"items": {
"additionalProperties": false,
"properties": {
"category": {
"maxLength": 80,
"type": "string"
},
"name": {
"maxLength": 150,
"type": "string"
},
"version": {
"maxLength": 80,
"type": [
"string",
"null"
]
}
},
"required": [
"name",
"category",
"version"
],
"type": "object"
},
"maxItems": 150,
"type": "array"
}
},
"required": [
"observed_at",
"technologies"
],
"type": "object"
},
"url": {
"maxLength": 2048,
"type": "string"
}
},
"required": [
"url"
],
"title": "Cal.com fingerprint monitor input",
"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"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-15T01:09:22.173Z",
"quality": {
"l30DaysTotalCalls": 3,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-15T01:09:21.974Z"
},
"resource": "https://stack.halowerk.com/stack/articles/calcom",
"serviceName": "Tech Detect",
"tags": [
"x402",
"halowerk",
"stack_calcom"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Purpose-bound Cal.com observation (booking) using the existing fresh Stack-Monitor. Returns stack_calcom_decision, direct versus inferred status, evidence, optional version difference against a caller-owned baseline and reusable snapshot. Missing fingerprints do not prove absence. No background scheduling, CVE, compatibility or installed-extension inventory. Existing outbound safeguards remain in the injected motor. One public HTTPS root domain, up to150 baseline technologies; 9s timeout."
}What the leaf hashes
{"body":"ac760b6d5ef2a5d65777860c8253aba6d7aa733e29b5ee77989bcecfdc4ba078","id":121824,"kind":"listing","method":"baseline/1","observed_us":1793025620547454,"prev":null,"subject":"x402_bazaar:https://stack.halowerk.com/stack/articles/calcom","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).
- 0x798a88c8247770843dd22c2fd4a2e9b0cb6a9a43d84ed8576e5d66b4bd79a929
- 0xbc5a4f3d87f8eefdda482bae1ca0aa9af534505b55c4c9259180ab221ddd9ade
- 0xe415b015cb368ba57f95a5fc1cd3118055c1571b587a097107f9543627c7d2e1
- 0x5701605cd3739ca56924ef70e55325b2f45445679728907defe509d99215c9bb
- 0x8a5c5dc29e21131b79ae87a112634ae5bc564533cf0317a4b6f39bd1fb9bf79d
- 0xe965e0ec717ae59058a61adcf108163390ca985bba6228fb032e95b17bb8e381
- 0x7ecc5514f0dcc57db1172849ed2912e283e3117bf9f07aec6036d2f910862470
- 0xd0e170f88068ac47264237220b435977fa9aa59c97de41f024f01aa988529c9b
- 0x64a3a1de186a30d8267409b69786e3fa58eff3a838fb9284fc759aac4b93cc63
- 0x92682b02dffe9c4da40541e03d18e0abcecdbee29ff9216ce70bbff0b1fec2a1
- 0x78977732f6810276b475c7ba4995e269c53c1218a49bb3951e04ede6049b4c08
- 0xdcba35a3346e9c4b9ae1267cc5995998c2c33da9ef658e955eaae1589ebbdcad
- 0x01c95624b1f2385ef774ee258a9ae58a4df07a1bdaa829de84e1d5201f3f39c2
- 0x7721d38652b6444b18e1193824e50490ade04851ce6221771f6e374c4527d80f
- 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
- 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
- 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae