← The evidence ledger
Evidence row 2201345
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://barcode-qr.x402tookit.com/qr-capacity
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- c940fca5d41f8fcdc4c0187fdc4cd4a7ef2f43e8d1bc8dd88b7b1c3ad7e246a3
- Leaf
- 0x979644b010d866f2aa480c79c1f997a57ce9679ac497b40d721b0064cca813b4
What was observed
{
"endpoints": [
[
"x402",
"https://barcode-qr.x402tookit.com/qr-capacity"
]
],
"name": "Barcodes and QR Codes",
"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": "QR capacity from the ISO 18004 table: max digits, letters, bytes for a version, or the smallest version for a length.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"ec": "Q",
"version": 1
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-21T00:45:41.689Z",
"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.",
"ecLevel": "Q",
"notChecked": [
"mixed-mode segmentation (a text with digits and letters can fit in more than one mode's count; this gives single-mode limits)",
"Micro QR and Structured Append"
],
"reasons": [
"Limits are for a single mode over the whole text; real text mixing modes needs the byte limit or smarter segmentation."
],
"source": "computed locally",
"summary": "Version 1-Q: up to 27 digits, 16 alphanumeric, 11 bytes.",
"verdict": "CAPACITY",
"version": {
"dataCodewords": 13,
"errorCorrectionBlocks": 1,
"errorCorrectionCodewords": 13,
"errorCorrectionCodewordsPerBlock": 13,
"maxAlphanumeric": 16,
"maxBytes": 11,
"maxDigits": 27,
"maxKanji": 7,
"modules": 21,
"totalCodewords": 26,
"version": 1
}
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"ec": {
"description": "Error correction level L, M, Q or H",
"type": "string"
},
"length": {
"description": "Characters to store: returns the smallest version that fits",
"type": "integer"
},
"mode": {
"description": "numeric, alphanumeric or byte (default byte) for the length search",
"type": "string"
},
"version": {
"description": "QR version 1 to 40: returns every mode's capacity",
"type": "integer"
}
},
"required": [
"ec"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"ecLevel": {
"type": [
"null",
"string"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
},
"version": {
"properties": {
"dataCodewords": {
"type": [
"null",
"number"
]
},
"errorCorrectionBlocks": {
"type": [
"null",
"number"
]
},
"errorCorrectionCodewords": {
"type": [
"null",
"number"
]
},
"errorCorrectionCodewordsPerBlock": {
"type": [
"null",
"number"
]
},
"maxAlphanumeric": {
"type": [
"null",
"number"
]
},
"maxBytes": {
"type": [
"null",
"number"
]
},
"maxDigits": {
"type": [
"null",
"number"
]
},
"maxKanji": {
"type": [
"null",
"number"
]
},
"modules": {
"type": [
"null",
"number"
]
},
"totalCodewords": {
"type": [
"null",
"number"
]
},
"version": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-02T04:05:24.543Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-02T04:05:24.294Z"
},
"resource": "https://barcode-qr.x402tookit.com/qr-capacity",
"serviceName": "Barcodes and QR Codes",
"tags": [
"qr",
"qr-code",
"capacity"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "QR capacity from the ISO 18004 table: max digits, letters, bytes for a version, or the smallest version for a length."
}What the leaf hashes
{"body":"c940fca5d41f8fcdc4c0187fdc4cd4a7ef2f43e8d1bc8dd88b7b1c3ad7e246a3","id":2201345,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646804593334,"prev":null,"subject":"x402_bazaar:https://barcode-qr.x402tookit.com/qr-capacity","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).
- 0x979647d056550361ada7777ad1665bdf3d2e12435f8257704d08c7f0ef234757
- 0x10525926988e0423f8c481e08ef4bccb2cf3448103f7a6c3098acbf911240fe3
- 0x938ee0f29d8dbb4a573a926525e5f5d9cbd824bdc8e4f385301a9165f8e7578e
- 0x5f0ac2ab6cc828d024f84348d7ba5d1cf4f524f54d7979ef37e8f33e87c08a57
- 0x55f82e738a11cf1d11b1134a3f7d6b9b4074b66c8adceecad09d15a357f6dcaa
- 0x72b223929603da09f74501d2b03864653bb956b9b77110890757028741d6339e
- 0xc0de11d8d57284a5ba66779edae6be0e526dcfffdc2ba30491eb41d689559483
- 0x71e822e2a6d7d4784b512f37dee5c1c9ac63676e482c5169340886751eda3521
- 0x065a6a84adaee78a42d5b2ca5fd0d526ed66be41288a99bb183f91f08dac64c4
- 0xea7325c2b7eafe81a84fcd10a3312383cfad4cfb4cf9a638866e4ce768f6375b
- 0x962146faef816638fd3d22248461b5a38069af335a4949c571e21c2f49655125
- 0xb4746c9c6a01a5463121fb30690562293e068b5358ab464ea070f4414595db5f
- 0x161ab8dfe29d5443837514b3760b34879b8201d43912571c314e4142639b07a3
- 0xc5de092f33d9a5a2d3076d47423feb11b0630cdc080163babf6390bb04568ce5
- 0x9c91ecb84461aa4cb2a891252746755d862a88fe9bad822700cdb99eaab2edca
- 0x7731256c7406f95d30aabe3bbcb574b72535b9c28e8eb3db363210761a28a6b9
- 0x07ad80c0c234ecea379a2f4450dfd0804db049dbc62abe77af6306049ca6b6c2
- 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
- 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af