← The evidence ledger
Evidence row 2190046
Observed , by sync.agentic_market/1.
- Kind
- listing
- About
- source_record agentic_market:chess-notation-x402tookit-com
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 70bb9e8c09054995fdfb05ae4e46747af20751c8f6b16479e5aaf72301756515
- Leaf
- 0x80dddb600d67f7154477515d9ac29bbfa793906f0fce8022468bf18d5f9e6ee9
What was observed
{
"endpoints": [
[
"x402",
"https://chess-notation.x402tookit.com/fen-board"
],
[
"x402",
"https://chess-notation.x402tookit.com/fen-parse"
],
[
"x402",
"https://chess-notation.x402tookit.com/material-count"
],
[
"x402",
"https://chess-notation.x402tookit.com/pgn-headers"
],
[
"x402",
"https://chess-notation.x402tookit.com/piece-moves"
],
[
"x402",
"https://chess-notation.x402tookit.com/square-distance"
],
[
"x402",
"https://chess-notation.x402tookit.com/square-info"
],
[
"x402",
"https://chess-notation.x402tookit.com/time-control"
]
],
"name": "chess-notation.x402tookit.com",
"owner_address": null,
"raw": {
"caip2_networks": [
"eip155:137",
"eip155:42161",
"eip155:8453",
"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
],
"category": "",
"description": "",
"domain": "chess-notation.x402tookit.com",
"endpoints": [
{
"description": "Render a FEN position as an 8x8 ASCII board (White at the bottom) plus a piece-by-square list.",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": "r1bqkbnr/pppp1ppp/2n5/4p3/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 2 3",
"group": "query",
"name": "fen",
"required": false,
"type": "string"
}
],
"pricing": {
"amount": "0.02",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
},
"serviceName": "Chess Notation Tools",
"tags": [
"chess",
"fen",
"board",
"ascii"
],
"url": "https://chess-notation.x402tookit.com/fen-board"
},
{
"description": "Validate a chess FEN: syntax of all six fields, king and pawn counts, castling and en passant consistency, piece totals.",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",
"group": "query",
"name": "fen",
"required": false,
"type": "string"
}
],
"pricing": {
"amount": "0.02",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
},
"serviceName": "Chess Notation Tools",
"tags": [
"chess",
"fen",
"validation",
"position"
],
"url": "https://chess-notation.x402tookit.com/fen-parse"
},
{
"description": "Material balance from a FEN: standard 1-3-3-5-9 point totals per side, difference and piece lists.",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",
"group": "query",
"name": "fen",
"required": false,
"type": "string"
}
],
"pricing": {
"amount": "0.02",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
},
"serviceName": "Chess Notation Tools",
"tags": [
"chess",
"material",
"balance",
"fen"
],
"url": "https://chess-notation.x402tookit.com/material-count"
},
{
"description": "Parse PGN tag pairs, check the Seven Tag Roster, result token and date format, and count the moves in the movetext.",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": "[Event \"Casual game\"]\n[Site \"Paris FRA\"]\n[Date \"1858.??.??\"]\n[Round \"?\"]\n[White \"Paul Morphy\"]\n[Black \"Duke Karl / Count Isouard\"]\n[Result \"1-0\"]\n\n1. e4 e5 2. Nf3 d6 3. d4 Bg4 1-0",
"group": "query",
"name": "pgn",
"required": false,
"type": "string"
}
],
"pricing": {
"amount": "0.02",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
},
"serviceName": "Chess Notation Tools",
"tags": [
"chess",
"pgn",
"tags",
"parse"
],
"url": "https://chess-notation.x402tookit.com/pgn-headers"
},
{
"description": "Squares a knight, bishop, rook, queen, king or pawn reaches from a square on an empty board, with the count.",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": "knight",
"group": "query",
"name": "piece",
"required": false,
"type": "string"
},
{
"default": null,
"description": "",
"enumValues": [],
"example": "d4",
"group": "query",
"name": "square",
"required": false,
"type": "string"
}
],
"pricing": {
"amount": "0.02",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
},
"serviceName": "Chess Notation Tools",
"tags": [
"chess",
"moves",
"knight",
"bishop"
],
"url": "https://chess-notation.x402tookit.com/piece-moves"
},
{
"description": "Distance between two chess squares as king moves, rook moves, bishop moves and knight moves on an empty board.",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": "a1",
"group": "query",
"name": "from",
"required": false,
"type": "string"
},
{
"default": null,
"description": "",
"enumValues": [],
"example": "h8",
"group": "query",
"name": "to",
"required": false,
"type": "string"
}
],
"pricing": {
"amount": "0.02",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
},
"serviceName": "Chess Notation Tools",
"tags": [
"chess",
"distance",
"knight",
"king"
],
"url": "https://chess-notation.x402tookit.com/square-distance"
},
{
"description": "File, rank, light or dark colour, 0-63 index, diagonals and mirror squares for a chess square like e4.",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": "e4",
"group": "query",
"name": "square",
"required": false,
"type": "string"
}
],
"pricing": {
"amount": "0.02",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
},
"serviceName": "Chess Notation Tools",
"tags": [
"chess",
"square",
"coordinates",
"board"
],
"url": "https://chess-notation.x402tookit.com/square-info"
},
{
"description": "Classify a chess time control (bullet, blitz, rapid, classical) from base minutes and increment, with estimated length.",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": 5,
"group": "query",
"name": "baseMinutes",
"required": false,
"type": "number"
},
{
"default": null,
"description": "",
"enumValues": [],
"example": 3,
"group": "query",
"name": "incrementSeconds",
"required": false,
"type": "number"
}
],
"pricing": {
"amount": "0.02",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
},
"serviceName": "Chess Notation Tools",
"tags": [
"chess",
"time-control",
"blitz",
"clock"
],
"url": "https://chess-notation.x402tookit.com/time-control"
}
],
"enriched": false,
"iconUrl": "",
"id": "chess-notation-x402tookit-com",
"integrationType": "",
"isNew": false,
"name": "chess-notation.x402tookit.com",
"networks": [
"Base",
"eip155:137",
"eip155:42161",
"solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp"
],
"priceSummary": {
"avgCostBasis": "exact",
"avgCostPerTransaction": "0.02",
"currency": "USDC",
"maxAmount": "0.02",
"minAmount": "0.02"
},
"provider": "chess-notation.x402tookit.com",
"providerUrl": "",
"serviceName": "Chess Notation Tools",
"tags": [
"chess",
"fen",
"board",
"ascii",
"validation",
"position",
"material",
"balance",
"pgn",
"tags",
"parse",
"moves",
"knight",
"bishop",
"distance",
"king",
"square",
"coordinates",
"time-control",
"blitz",
"clock"
]
},
"source": "agentic_market",
"summary": ""
}What the leaf hashes
{"body":"70bb9e8c09054995fdfb05ae4e46747af20751c8f6b16479e5aaf72301756515","id":2190046,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793643654528747,"prev":null,"subject":"agentic_market:chess-notation-x402tookit-com","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).
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- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af