← The evidence ledger
Evidence row 2202016
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://css-design-calc.x402tookit.com/grid-columns
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 719ba97c19ce0808fdf3891701d9378f5b944dddde276ee649156e8032a4f5d7
- Leaf
- 0x0a5f9e6f7cb7fdb7b1016bc01a8a4e3d076def1c5f2129efd003560bb48c83f9
What was observed
{
"endpoints": [
[
"x402",
"https://css-design-calc.x402tookit.com/grid-columns"
]
],
"name": "CSS Design Calc",
"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": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"transactionVersions": [
0
]
},
"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": "Column and span widths for an N-column grid from container width, columns and gutter, or the container for a column width.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"columns": 12,
"containerWidth": 1140,
"gutter": 30
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-11T14:32:44.186Z",
"columnPercent": 5.92105263,
"columnWidth": 67.5,
"columns": 12,
"containerWidth": 1140,
"css": "grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: 30px;",
"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.",
"gutter": 30,
"gutterTotal": 330,
"notChecked": [
"subpixel rounding by browsers (column widths are exact fractions)",
"responsive breakpoints and how many columns each uses",
"…1 more"
],
"pageWidth": 1140,
"reasons": [
"Gutters take 330 (28.947% of the container).",
"CSS: display: grid; grid-template-columns: repeat(12, 1fr); column-gap: 30px; with max-width 1140px."
],
"source": "Grid arithmetic: container = n x column + (n - 1) x gutter, computed locally",
"spans": [
{
"percentOfContainer": 5.921053,
"percentWithGutterAfter": 8.333333,
"span": 1,
"width": 67.5
},
{
"percentOfContainer": 14.473684,
"percentWithGutterAfter": 16.666667,
"span": 2,
"width": 165
}
],
"summary": "12 columns of 67.5 with 30 gutters make a 1140 container; a 1-column span is 67.5, a 6-column span is 555.",
"verdict": "COMPUTED"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"columnWidth": {
"description": "Width of one column; returns the container width",
"type": "number"
},
"columns": {
"description": "Number of columns, 1 to 48",
"type": "integer"
},
"containerWidth": {
"description": "Total width available to the columns (use this, or columnWidth)",
"type": "number"
},
"gutter": {
"description": "Gap between columns, in px (or any unit)",
"type": "number"
},
"margin": {
"description": "Outer margin on each side, added to the page width (default 0)",
"type": "number"
}
},
"required": [
"columns",
"gutter"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"columnPercent": {
"type": [
"null",
"number"
]
},
"columnWidth": {
"type": [
"null",
"number"
]
},
"columns": {
"type": [
"null",
"number"
]
},
"containerWidth": {
"type": [
"null",
"number"
]
},
"css": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"gutter": {
"type": [
"null",
"number"
]
},
"gutterTotal": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"pageWidth": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"spans": {
"items": {
"properties": {
"percentOfContainer": {
"type": [
"null",
"number"
]
},
"percentWithGutterAfter": {
"type": [
"null",
"number"
]
},
"span": {
"type": [
"null",
"number"
]
},
"width": {
"type": [
"null",
"number"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:46:47.908Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T22:46:47.729Z"
},
"resource": "https://css-design-calc.x402tookit.com/grid-columns",
"serviceName": "CSS Design Calc",
"tags": [
"css",
"grid",
"layout",
"columns"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Column and span widths for an N-column grid from container width, columns and gutter, or the container for a column width."
}What the leaf hashes
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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