← The evidence ledger
Evidence row 72847
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://crypto-math.x402tookit.com/ec-params
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 02160d252f0d844b183850b0540646d7c6060ca86cac2e7de66c27e250c070b9
- Leaf
- 0x122dc28cc3405a1e1548f8bccad8501f1a267c0b13c63982f24fe6d370debb28
What was observed
{
"endpoints": [
[
"x402",
"https://crypto-math.x402tookit.com/ec-params"
]
],
"name": "Crypto Math",
"owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
"raw": {
"accepts": [
{
"amount": "20000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "20000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
"scheme": "exact"
},
{
"amount": "20000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "20000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
}
],
"description": "secp256k1, P-256 and P-384 public parameters (p, n, G) from SEC 2, with an on-curve check of a public point.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"curve": "secp256k1",
"publicKey": "0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798"
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-11T23:46:27.980Z",
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"notChecked": [
"that the point belongs to anyone or was generated from a real private key",
"the point at infinity encoding",
"…2 more"
],
"params": {
"a": {
"hex": "0000000000000000000000000000000000000000000000000000000000000000"
},
"aliases": [
"secp256k1",
"K-256"
],
"b": {
"hex": "0000000000000000000000000000000000000000000000000000000000000007"
},
"cofactor": 1,
"commonUse": "Bitcoin, Ethereum and many other chains (ECDSA and Schnorr)",
"equation": "y^2 = x^3 + 7 (mod p)",
"fieldBits": 256,
"generator": {
"x": "79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798",
"y": "483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8"
},
"name": "secp256k1",
"oid": "1.3.132.0.10",
"order": {
"decimal": "115792089237316195423570985008687907852837564279074904382605163141518161494337",
"hex": "fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141"
},
"p": {
"decimal": "115792089237316195423570985008687907853269984665640564039457584007908834671663",
"hex": "fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f"
},
"securityStrengthBits": 128
},
"point": {
"compressedHex": "0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798",
"isGenerator": true,
"uncompressedHex": "0479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8",
"valid": true,
"x": "79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798",
"y": "483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8",
"yParity": "even"
},
"reasons": [
"Parameters are the published SEC 2 v2 / FIPS 186-4 values; cofactor is 1, so any on-curve point other than infinity has order n."
],
"source": "SEC 2 v2 (Certicom) and NIST FIPS 186-4 curve parameters, point check computed locally",
"summary": "The point is on secp256k1.",
"verdict": "ON_CURVE"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"curve": {
"description": "secp256k1, secp256r1 (P-256) or secp384r1 (P-384)",
"type": "string"
},
"publicKey": {
"description": "PUBLIC key hex: 04||X||Y uncompressed or 02/03||X compressed; not a private scalar",
"type": "string"
},
"x": {
"description": "Point x coordinate, decimal or 0x hex (give with y)",
"type": "string"
},
"y": {
"description": "Point y coordinate, decimal or 0x hex (give with x)",
"type": "string"
}
},
"required": [
"curve"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"params": {
"properties": {
"a": {
"properties": {
"hex": {
"type": [
"null",
"string"
]
}
},
"type": [
"null",
"object"
]
},
"aliases": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"b": {
"properties": {
"hex": {
"type": [
"null",
"string"
]
}
},
"type": [
"null",
"object"
]
},
"cofactor": {
"type": [
"null",
"number"
]
},
"commonUse": {
"type": [
"null",
"string"
]
},
"equation": {
"type": [
"null",
"string"
]
},
"fieldBits": {
"type": [
"null",
"number"
]
},
"generator": {
"properties": {
"x": {
"type": [
"null",
"string"
]
},
"y": {
"type": [
"null",
"string"
]
}
},
"type": [
"null",
"object"
]
},
"name": {
"type": [
"null",
"string"
]
},
"oid": {
"type": [
"null",
"string"
]
},
"order": {
"properties": {
"decimal": {
"type": [
"null",
"string"
]
},
"hex": {
"type": [
"null",
"string"
]
}
},
"type": [
"null",
"object"
]
},
"p": {
"properties": {
"decimal": {
"type": [
"null",
"string"
]
},
"hex": {
"type": [
"null",
"string"
]
}
},
"type": [
"null",
"object"
]
},
"securityStrengthBits": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"point": {
"properties": {
"compressedHex": {
"type": [
"null",
"string"
]
},
"isGenerator": {
"type": [
"boolean",
"null"
]
},
"uncompressedHex": {
"type": [
"null",
"string"
]
},
"valid": {
"type": [
"boolean",
"null"
]
},
"x": {
"type": [
"null",
"string"
]
},
"y": {
"type": [
"null",
"string"
]
},
"yParity": {
"type": [
"null",
"string"
]
}
},
"type": [
"null",
"object"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-24T18:37:27.801Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-24T18:37:27.511Z"
},
"resource": "https://crypto-math.x402tookit.com/ec-params",
"serviceName": "Crypto Math",
"tags": [
"secp256k1",
"ecdsa",
"elliptic-curve",
"sec2"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "secp256k1, P-256 and P-384 public parameters (p, n, G) from SEC 2, with an on-curve check of a public point."
}What the leaf hashes
{"body":"02160d252f0d844b183850b0540646d7c6060ca86cac2e7de66c27e250c070b9","id":72847,"kind":"listing","method":"baseline/1","observed_us":1793025486541561,"prev":null,"subject":"x402_bazaar:https://crypto-math.x402tookit.com/ec-params","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).
- 0x122e649df0c0d2d39215204257d4348ee3ea98c461b206a4cc52ac245bfae1dd
- 0x0b389dea1fc4ca2f8a020a9f5ebea92a20e1ebad1f64ca6b25d1ef8624b8aeed
- 0x5f12673f6e94312046fc6eb6e2d4efa96bae90c5a242dd4af7ef779556845244
- 0xa6e092485e5b70160ec5dd0b05b52e50f2e004a1e5abfcf15ba35d3391987090
- 0xc6577af8283cebbbb0ca3cf01da4e64c2cba969b2a3ce14125137eb58df99952
- 0x3cee297f6609bcb511d67bc86706ce0d8026a6371bf80c554878d6b922521886
- 0x99e4a56f2d512a958a7447450df60521cb745628d60d5eb0a7e91b3114d46e92
- 0x62d6b8e34ded9cb528d0f5f658459cc3a826967c755665cfa567ce982dcc9fb5
- 0xe0ec03c9f8293fea884d675b65ce4d53fd9d3ede010fc4ebad07e7824923238c
- 0x8b074e295bef9ac21d945d10f5903500dd59050adddb16656bd7293d68fee436
- 0x502ad0a7c2d0bbc45ef3aea37a6ae457822535bcbd44272f1f9e8e4f7166c167
- 0x7e390200ea1ea25db5884cf05fa50ad599f0759b573f081e361cc22f7206133c
- 0xff1c28bdf595a3d1333e9915edc68e9c5fded7bd5923fa85870979af34cbc3b3
- 0xb49e8c2564256e5322e375cb619d9ac70fd17c1d1eba9c991bba4cb6428f45cc
- 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
- 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
- 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae