← The evidence ledger
Evidence row 117523
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://numeral.openverbs.com/v1/roman
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 564189aac8a1e77efacbd31491afff8fc588697e2aab7fdc04043e9c1d3bbefa
- Leaf
- 0x6d40b6d4661b3d3cfef495a96a4f7cc5f8c21f0cc3be0dc3564a15595c8b67af
What was observed
{
"endpoints": [
[
"x402",
"https://numeral.openverbs.com/v1/roman"
]
],
"name": "Roman numerals",
"owner_address": "0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a",
"raw": {
"accepts": [
{
"amount": "2000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
"scheme": "exact"
}
],
"description": "Convert between integers (1–3999) and Roman numerals in either direction — a digit string is encoded to Roman, a Roman numeral is decoded to an integer. Non-canonical numerals (IIII, IC) are rejected.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"value": "MCMXCIV"
},
"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": {
"value": {
"description": "An integer 1–3999, or a Roman numeral like \"MCMXCIV\".",
"maxLength": 32,
"minLength": 1,
"type": "string"
}
},
"required": [
"value"
],
"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": "2026-10-26T00:16:57.565Z",
"quality": {
"l30DaysTotalCalls": 49,
"l30DaysUniquePayers": 5,
"lastCalledAt": "2026-10-26T00:16:57.428Z"
},
"resource": "https://numeral.openverbs.com/v1/roman",
"serviceName": "Roman numerals",
"tags": [
"roman numeral converter",
"convert roman numerals",
"roman to integer",
"integer to roman",
"validate roman numeral"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Convert between integers (1–3999) and Roman numerals in either direction — a digit string is encoded to Roman, a Roman numeral is decoded to an integer. Non-canonical numerals (IIII, IC) are rejected."
}What the leaf hashes
{"body":"564189aac8a1e77efacbd31491afff8fc588697e2aab7fdc04043e9c1d3bbefa","id":117523,"kind":"listing","method":"baseline/1","observed_us":1793025611318257,"prev":null,"subject":"x402_bazaar:https://numeral.openverbs.com/v1/roman","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).
- 0x6d40c3099baacc5ba24e984421c5e00678b9e58b69efc71d4a071db14640affa
- 0x29967ee116337649447e93abd13cf4b3da249b4094a727d12945d9aa48d3274c
- 0xc690a4f77da62f0162ee4b1555d7fef8e1723ac958e0e1458fa17607342b9302
- 0x2229a661c2b0200b56b6974f8b1635e455b9a94b8e4d0ee61dcef596decb96e7
- 0x7098ce5daa6f8ff74bbc7110569675dc20b3468d8f6198d20f06803f9b86a4b0
- 0xb5e7f2d1edb10ad5e68de81c7c9cceb469969365d2baf7e2216af4d84b8bff9f
- 0x5c0439c9789fedef17aec90b03080bde897c1c99016e94e838b0822afdf4a3fd
- 0xb62376c32b580c78a3e8b7d7b77d8c1d636c5478f27bb1f57809a5b7db75ee99
- 0x0e73789be7c40cfc0ff942e36c98ca89369b26c9056ecb17c09cfe774720d480
- 0xd436881f2f0c7eba4a0a8b847ff798d53394f793d9cffd7bdf04f6a3d5c2f8be
- 0x82b0a13483194285c0c386d5ad47eb953493b28955a9a8e58da3a2e6e220ed30
- 0x929b3f59cbf01edbae456522161805dd51e098dc3a66d845508de46581bb953c
- 0x9dc4d6f64bc3c323d2c45a28209068cd473b6979bd632a0d694bf94d19bc39df
- 0xfc9b5a81a7a83a1c735a4fe64590beb9db14d2366f463161358af28c3ea9a81d
- 0xa2d436d488e3600b0e5c3e3ed9c9234cd52853c59830b786334fd0c4292d9f40
- 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
- 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae