← The evidence ledger
Evidence row 2829
Observed , by baseline/1.
- Kind
- listing
- About
- source_record agentic_market:matrix-openverbs-com
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- b032c309e81b926862bc256fb62359d0b9b88c816652ca64a0f6e1d3706c78f8
- Leaf
- 0x6d74165a6d80d022ef73edd00b78f7c5cf5c33de37d5bfbbf569423e3f36d9ad
What was observed
{
"endpoints": [
[
"x402",
"https://matrix.openverbs.com/v1/determinant"
],
[
"x402",
"https://matrix.openverbs.com/v1/inverse"
],
[
"x402",
"https://matrix.openverbs.com/v1/multiply"
],
[
"x402",
"https://matrix.openverbs.com/v1/solve"
],
[
"x402",
"https://matrix.openverbs.com/v1/transpose"
]
],
"name": "matrix.openverbs.com",
"owner_address": null,
"raw": {
"caip2_networks": [
"eip155:8453"
],
"category": "",
"description": "",
"domain": "matrix.openverbs.com",
"endpoints": [
{
"description": "Compute the determinant of a square matrix via Gaussian elimination with partial pivoting. A non-square, ragged or empty matrix is a clean 400; a singular matrix simply returns 0.",
"method": "POST",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": [],
"group": "body",
"name": "matrix",
"required": false,
"type": "array"
}
],
"pricing": {
"amount": "0.004",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "3"
},
"serviceName": "Determinant",
"tags": [
"matrix determinant",
"compute determinant",
"square matrix determinant",
"gaussian elimination determinant",
"determinant api"
],
"url": "https://matrix.openverbs.com/v1/determinant"
},
{
"description": "Invert a square matrix via Gauss-Jordan elimination. A non-square, ragged or empty matrix is a clean 400. A singular (non-invertible) matrix is NOT an error — it returns a successful { invertible:false, inverse:null }.",
"method": "POST",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": [],
"group": "body",
"name": "matrix",
"required": false,
"type": "array"
}
],
"pricing": {
"amount": "0.004",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "1",
"l30DaysUniquePayers": "1"
},
"serviceName": "Invert a matrix",
"tags": [
"matrix inverse",
"invert matrix",
"inverse matrix api",
"gauss jordan inverse",
"check matrix invertible"
],
"url": "https://matrix.openverbs.com/v1/inverse"
},
{
"description": "Multiply two matrices A·B. The inner dimensions must agree (columns of A equal rows of B); a mismatch or a ragged/empty matrix is a clean 400.",
"method": "POST",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": [],
"group": "body",
"name": "a",
"required": false,
"type": "array"
},
{
"default": null,
"description": "",
"enumValues": [],
"example": [],
"group": "body",
"name": "b",
"required": false,
"type": "array"
}
],
"pricing": {
"amount": "0.004",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "1",
"l30DaysUniquePayers": "1"
},
"serviceName": "Multiply matrices",
"tags": [
"matrix multiplication",
"multiply matrices",
"linear algebra multiply",
"matrix product api",
"compute a dot b"
],
"url": "https://matrix.openverbs.com/v1/multiply"
},
{
"description": "Solve the linear system A·x = b for a square coefficient matrix A and vector b via Gaussian elimination with partial pivoting. A non-square A or a b of the wrong length is a clean 400. A singular system is NOT an error — it returns a successful { solvable:false, solution:null }.",
"method": "POST",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": [],
"group": "body",
"name": "a",
"required": false,
"type": "array"
},
{
"default": null,
"description": "",
"enumValues": [],
"example": [],
"group": "body",
"name": "b",
"required": false,
"type": "array"
}
],
"pricing": {
"amount": "0.004",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
},
"serviceName": "Solve a linear system",
"tags": [
"solve linear system",
"linear equation solver",
"matrix solve ax b",
"gaussian elimination solver",
"solve coefficients vector"
],
"url": "https://matrix.openverbs.com/v1/solve"
},
{
"description": "Transpose a matrix, swapping rows and columns. A ragged/empty matrix is a clean 400.",
"method": "POST",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": [],
"group": "body",
"name": "matrix",
"required": false,
"type": "array"
}
],
"pricing": {
"amount": "0.004",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "1",
"l30DaysUniquePayers": "1"
},
"serviceName": "Transpose a matrix",
"tags": [
"transpose matrix",
"swap matrix rows columns",
"matrix transpose api",
"flip matrix axes",
"convert rows to columns"
],
"url": "https://matrix.openverbs.com/v1/transpose"
}
],
"enriched": false,
"iconUrl": "",
"id": "matrix-openverbs-com",
"integrationType": "",
"isNew": false,
"name": "matrix.openverbs.com",
"networks": [
"Base"
],
"priceSummary": {
"avgCostBasis": "exact",
"avgCostPerTransaction": "0.004",
"currency": "USDC",
"maxAmount": "0.004",
"minAmount": "0.004"
},
"provider": "matrix.openverbs.com",
"providerUrl": "",
"serviceName": "",
"tags": [
"matrix determinant",
"compute determinant",
"square matrix determinant",
"gaussian elimination determinant",
"determinant api",
"matrix inverse",
"invert matrix",
"inverse matrix api",
"gauss jordan inverse",
"check matrix invertible",
"matrix multiplication",
"multiply matrices",
"linear algebra multiply",
"matrix product api",
"compute a dot b",
"solve linear system",
"linear equation solver",
"matrix solve ax b",
"gaussian elimination solver",
"solve coefficients vector",
"transpose matrix",
"swap matrix rows columns",
"matrix transpose api",
"flip matrix axes",
"convert rows to columns"
]
},
"source": "agentic_market",
"summary": ""
}What the leaf hashes
{"body":"b032c309e81b926862bc256fb62359d0b9b88c816652ca64a0f6e1d3706c78f8","id":2829,"kind":"listing","method":"baseline/1","observed_us":1793025267338954,"prev":null,"subject":"agentic_market:matrix-openverbs-com","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).
- 0x6d74a9f55adb3dd9080d4cd7d6264f8aa93d25e1441cc8c8c6daa58495d483ef
- 0x8c0d1ffce7d4d983f32391e7596e9cd54edfd68d86a33ff779472d2510e990d8
- 0xf10f0453f437c4e7bf2e50f06edb6972b6014dc7e69c65c1b56535757479c496
- 0xb0f6f102ff93dd557ce417f4060fbecd0b99e378dbdeedf205d1d0d5bfe9c2b2
- 0x721aa16f2265aef2fb4cd4db07654a6c05b35f89e67df92f94944d1862c397e7
- 0x81de88154a1718c49ad228e337afa658b8dc364cbdc188b3c049a304e45bce39
- 0x159f61355c20b88c536469d12f1ac729445fbc61400f9060fd1b3337e0554510
- 0x2a6da729da9cecc568cbb9352d9ef48284d5333482269abb43a63501c4153387
- 0x0e73789be7c40cfc0ff942e36c98ca89369b26c9056ecb17c09cfe774720d480
- 0xd436881f2f0c7eba4a0a8b847ff798d53394f793d9cffd7bdf04f6a3d5c2f8be
- 0x82b0a13483194285c0c386d5ad47eb953493b28955a9a8e58da3a2e6e220ed30
- 0x929b3f59cbf01edbae456522161805dd51e098dc3a66d845508de46581bb953c
- 0x9dc4d6f64bc3c323d2c45a28209068cd473b6979bd632a0d694bf94d19bc39df
- 0xfc9b5a81a7a83a1c735a4fe64590beb9db14d2366f463161358af28c3ea9a81d
- 0xa2d436d488e3600b0e5c3e3ed9c9234cd52853c59830b786334fd0c4292d9f40
- 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
- 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae