← The evidence ledger
Evidence row 2201771
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://graph-algorithms.x402tookit.com/all-pairs-shortest
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 9d0ba393a6dc2e57d1c836de94622db94aafb323b0c8a86d86e800c60c986cb5
- Leaf
- 0xde8b7311784ee52e13afd9ed68709e37f00b71aa94ca19fcd89033dcbf1646de
What was observed
{
"endpoints": [
[
"x402",
"https://graph-algorithms.x402tookit.com/all-pairs-shortest"
]
],
"name": "Graph Algorithms",
"owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
"raw": {
"accepts": [
{
"amount": "30000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"transactionVersions": [
0
]
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
}
],
"description": "Floyd-Warshall all-pairs shortest distances for up to 100 nodes; negative weights ok; detects negative cycles.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"edges": "1,2,3; 1,3,8; 1,5,-4; 2,4,1; 2,5,7; 3,2,4; 4,1,2; 4,3,-5; 5,4,6",
"from": "3",
"to": "5"
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-21T01:36:13.445Z",
"degraded": false,
"directed": true,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"distances": [
[
0,
1
],
[
3,
0
]
],
"edgeCount": 9,
"nodeCount": 5,
"notChecked": [
"graphs over 100 nodes or 1000 edges (refused)",
"ties: one shortest path is returned when several exist"
],
"order": [
"1",
"2",
"…3 more"
],
"path": [
"3",
"2",
"…3 more"
],
"pathDistance": 3,
"reachablePairs": 20,
"reasons": [],
"source": "Floyd-Warshall algorithm, computed locally (CLRS ch. 25.2)",
"summary": "Shortest 3 to 5 is 3 via 3 > 2 > 4 > 1 > 5.",
"unreachablePairs": 0,
"verdict": "PATH_FOUND"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"directed": {
"description": "true (default); false makes each edge two-way (a negative edge then is a negative cycle)",
"type": "boolean"
},
"edges": {
"description": "Edges separated by ; or newline, each 'from,to' or 'from,to,weight' (default weight 1), or a JSON array of [from,to,weight]; up to 100 nodes for this endpoint, 1000 edges, 60000 characters; node names 1-32 characters of letters, digits, _ . : + -",
"type": "string"
},
"from": {
"description": "Optional node: with 'to', also returns that shortest path",
"type": "string"
},
"nodes": {
"description": "Optional extra node names (comma or space separated) so isolated nodes are counted; the total still counts toward the 200-node cap",
"type": "string"
},
"to": {
"description": "Optional node: with 'from', also returns that shortest path",
"type": "string"
}
},
"required": [
"edges"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"directed": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"distances": {
"items": {
"items": {
"type": "number"
},
"type": "array"
},
"type": [
"array",
"null"
]
},
"edgeCount": {
"type": [
"null",
"number"
]
},
"nodeCount": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"order": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"path": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"pathDistance": {
"type": [
"null",
"number"
]
},
"reachablePairs": {
"type": [
"null",
"number"
]
},
"reasons": {
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"unreachablePairs": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T23:26:47.025Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-01T23:26:46.738Z"
},
"resource": "https://graph-algorithms.x402tookit.com/all-pairs-shortest",
"serviceName": "Graph Algorithms",
"tags": [
"graph",
"floyd-warshall",
"all-pairs",
"shortest-path"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Floyd-Warshall all-pairs shortest distances for up to 100 nodes; negative weights ok; detects negative cycles."
}What the leaf hashes
{"body":"9d0ba393a6dc2e57d1c836de94622db94aafb323b0c8a86d86e800c60c986cb5","id":2201771,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646808845372,"prev":null,"subject":"x402_bazaar:https://graph-algorithms.x402tookit.com/all-pairs-shortest","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (444186 rows).
- 0xde8b695c7a8830205488bbbdf99ff0498a7c319d00ea921d2126d764f514ee87
- 0x0cb019c2e9dbae036dd7fbca6b18eac0b2a84b0a95b7d4ea65c3390dcf7e75a7
- 0x5234c879cc3f14ff1f7aa1d140244a11ba40f9c5f1e174353c4cdedaa2813af1
- 0x1bbae13f877add0966847fb5ebafe1afafc886424ac1b4d33227576fc28cd88f
- 0x35ddc33c4493a785a2a40a63bae1b87deb607011877a4ad7fc4180d2c8bf80c9
- 0xd7c50c5ad63060f85b8502afcf8e5a364159807f279bb73a98c76ad48f3d7e73
- 0xe8cd0696947c331c6767d1b2d91c0c075006e48a9b366b7bc1b0c0e55054dc82
- 0xce29514aa5fe972b5c9c9e872881a03e20d6dfcf079904b8d32c3000d02a946b
- 0xb935ee16f6aff3c3a52d38cf065d95ee70385d656391579da0bf4dc0cba8a837
- 0x81b56d73f259f04598277bd48002a3a0fa98443e4966fe199f0f12ee9c18a6ef
- 0x1d4f7107983a6cb8f818f859badeffbb9964454c836d1abb96f96320854655a0
- 0x933c861a9715acc355546ac1de965c0ed1155480f615b2e5e8679f2112c69496
- 0x1cd421f1e0b0be98fab8392181e25435047bd7c44fcbda07fa5cd27615d6b674
- 0x5dd75981e1af83dc5ec1e2b8a2959012484cc3ea2e0defded2187a5a93ba7236
- 0xa370e8e015a32408a8112e54e5f40a8a65e871bd52bbc6f25fbd1139f2ba5b11
- 0x7ddefa7d79e7640c3fed21ee4472689415182c41a0258ab04a81d60495f4c40a
- 0xdb8bd933619a267f9790faac9839143d202be46af284371cc369cdf683f897ba
- 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
- 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af