← The evidence ledger
Evidence row 2201231
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://publishing-calc.x402tookit.com/cover-size
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 5887bd5c1eaf5924a119872f32544645f26c0c66e738733a7a12e2fce6649b15
- Leaf
- 0xa10ed1e3fabf5734a3268443ac4b60c7f0500d5829b4e258584678bda9175dd2
What was observed
{
"endpoints": [
[
"x402",
"https://publishing-calc.x402tookit.com/cover-size"
]
],
"name": "Publishing 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": "Full paperback cover width and height with bleed from trim size and page count, in inches, mm and pixels.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"pages": 300,
"paper": "white",
"trimHeight": 9,
"trimWidth": 6
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-12T01:40:24.622Z",
"bleedIn": 0.125,
"coverHeightIn": 9.25,
"coverHeightMm": 234.95,
"coverHeightPx": 2775,
"coverWidthIn": 12.9256,
"coverWidthMm": 328.31,
"coverWidthPx": 3878,
"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.",
"dpiUsed": 300,
"frontXStartIn": 6.8006,
"inputUnit": "in",
"notChecked": [
"your printer's own cover template (spine rounding, safe margins, barcode zone and wrap rules differ)",
"hardcover wrap, board and hinge allowances, which add more than bleed",
"…1 more"
],
"reasons": [
"Width = back trim + spine + front trim + bleed on both outer edges; height = trim height + bleed top and bottom.",
"Spine: 300 pages x 0.002252 in (black ink on white paper (common POD figure 0.002252 in per page))."
],
"source": "computed locally (width = back + spine + front + 2 bleed; height = trim + 2 bleed)",
"spineWidthIn": 0.6756,
"spineXStartIn": 6.125,
"summary": "Full cover is 12.9256 x 9.25 in (328.3 x 235 mm) with a 0.6756 in spine.",
"trimHeightIn": 9,
"trimWidthIn": 6,
"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": {
"bleed": {
"description": "Bleed on each outer edge in the same unit (default 0.125 in or 3.175 mm)",
"type": "number"
},
"dpi": {
"description": "Pixels per inch for the pixel size (default 300)",
"type": "number"
},
"pageThicknessIn": {
"description": "Override: inches of spine per page",
"type": "number"
},
"pages": {
"description": "Total printed page count",
"type": "integer"
},
"paper": {
"description": "white (default), cream or color; sets spine thickness",
"type": "string"
},
"trimHeight": {
"description": "Trim height of one page",
"type": "number"
},
"trimWidth": {
"description": "Trim width of one page (inches by default)",
"type": "number"
},
"unit": {
"description": "in (default) or mm for trim and bleed",
"type": "string"
}
},
"required": [
"trimWidth",
"trimHeight",
"pages"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"bleedIn": {
"type": [
"null",
"number"
]
},
"coverHeightIn": {
"type": [
"null",
"number"
]
},
"coverHeightMm": {
"type": [
"null",
"number"
]
},
"coverHeightPx": {
"type": [
"null",
"number"
]
},
"coverWidthIn": {
"type": [
"null",
"number"
]
},
"coverWidthMm": {
"type": [
"null",
"number"
]
},
"coverWidthPx": {
"type": [
"null",
"number"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"dpiUsed": {
"type": [
"null",
"number"
]
},
"frontXStartIn": {
"type": [
"null",
"number"
]
},
"inputUnit": {
"type": [
"null",
"string"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"spineWidthIn": {
"type": [
"null",
"number"
]
},
"spineXStartIn": {
"type": [
"null",
"number"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"trimHeightIn": {
"type": [
"null",
"number"
]
},
"trimWidthIn": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-02T04:07:48.989Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-02T04:07:48.83Z"
},
"resource": "https://publishing-calc.x402tookit.com/cover-size",
"serviceName": "Publishing Calc",
"tags": [
"publishing",
"cover",
"bleed",
"trim-size"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Full paperback cover width and height with bleed from trim size and page count, in inches, mm and pixels."
}What the leaf hashes
{"body":"5887bd5c1eaf5924a119872f32544645f26c0c66e738733a7a12e2fce6649b15","id":2201231,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646801367272,"prev":null,"subject":"x402_bazaar:https://publishing-calc.x402tookit.com/cover-size","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).
- 0xa10f4359197fe35fb0be5e2615624b002598ead3047ad207d304cd5958ff6f4a
- 0x0087f95931c95b5765e609e1f97f57b2fe05e20ca622a9d1615c9d7040d321a6
- 0x90f0dc4696e5a1c77a478e2641802df08c7aea58fb7bd62635616d2b67d69e7c
- 0xed93bdf9790209993fa2256983a1755e1716ff1cc51458076fbe7063d3937848
- 0x3d7da94915d980ba4332f8f26e30d2497d0e0fdf6b546694dd7ee185fb23de58
- 0x78cc2087831a306b39bb0f38c2424cef103d08bd04352efa24ee11c59ae1b120
- 0xbf61ccfdf6c3832c56d4a026d91b6f8f9faa743011db0fc02ab87f00b1760efa
- 0x0b34caaf3d754a14fb4594285f7d2da7ec6d90af398a7eeef602a73babf5d750
- 0xb023b497eee0f5ea66ecdd04a152714b7086b3dee539fb01361a0976be068b1e
- 0x8f1f7637021f09d4703ae2b5b51aa1dec16215e2242165a2f79ca4bfc6608ef8
- 0xfb0396b61dff12da0e6e7622f40f5021c382c575df1f65c9468cbf7a72c8f8fc
- 0xc7ff2516151ce4262a575ce2e228e9c674806720a6f837e7c4b223a7c393c916
- 0x0503999a04120486c11b5e359e441fd5221b6b3e14bbdcfd7b1b4e8cbc5077ce
- 0x44d08992eb52b7db0b3504ba234d634742d61c21889da1eb00242ce07e97334b
- 0x7abf7290721a0b95be706db03c09de9df65bcba8e18ffe4616da43d9c31d6b0a
- 0x7731256c7406f95d30aabe3bbcb574b72535b9c28e8eb3db363210761a28a6b9
- 0x07ad80c0c234ecea379a2f4450dfd0804db049dbc62abe77af6306049ca6b6c2
- 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
- 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af