← The evidence ledger
Evidence row 2202118
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://chemistry-calc.x402tookit.com/molar-mass
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 3fd20fbc9a28034996263c39b9f147bb8a032e8aee81012ebfa59b992b527f74
- Leaf
- 0x9506a8a4919289bfee6cd304181a540efcdbbe0b72e7cc071065fdfcb8bb930f
What was observed
{
"endpoints": [
[
"x402",
"https://chemistry-calc.x402tookit.com/molar-mass"
]
],
"name": "Chemistry Calculators",
"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": "Molar mass and percent composition by element for a formula, including brackets and hydrates such as CuSO4.5H2O.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"formula": "C6H12O6"
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-11T08:45:39.976Z",
"composition": [
{
"atomicWeight": 12.011,
"atoms": 6,
"element": "C",
"massGramsPerMole": 72.066,
"massPercent": 40.002,
"name": "Carbon"
},
{
"atomicWeight": 1.008,
"atoms": 12,
"element": "H",
"massGramsPerMole": 12.096,
"massPercent": 6.71418,
"name": "Hydrogen"
}
],
"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.",
"hillFormula": "C6H12O6",
"input": "C6H12O6",
"molarMassGPerMol": 180.156,
"notChecked": [
"whether the formula is a real compound",
"isotopic composition (standard atomic weights are used)",
"…2 more"
],
"reasons": [
"Sum of IUPAC standard atomic weights times atom counts (abridged values, about 4 significant figures for most elements).",
"All elements have a standard atomic weight."
],
"source": "computed locally",
"summary": "C6H12O6 (C6H12O6): 180.156 g/mol; C 40%, H 6.714%, O 53.28%.",
"totalAtoms": 24,
"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": {
"formula": {
"description": "e.g. C6H12O6, Ca(OH)2, K4[Fe(CN)6], CuSO4.5H2O",
"type": "string"
}
},
"required": [
"formula"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"composition": {
"items": {
"properties": {
"atomicWeight": {
"type": [
"null",
"number"
]
},
"atoms": {
"type": [
"null",
"number"
]
},
"element": {
"type": [
"null",
"string"
]
},
"massGramsPerMole": {
"type": [
"null",
"number"
]
},
"massPercent": {
"type": [
"null",
"number"
]
},
"name": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"hillFormula": {
"type": [
"null",
"string"
]
},
"input": {
"type": [
"null",
"string"
]
},
"molarMassGPerMol": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"totalAtoms": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:41:41.393Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T22:41:41.219Z"
},
"resource": "https://chemistry-calc.x402tookit.com/molar-mass",
"serviceName": "Chemistry Calculators",
"tags": [
"chemistry",
"molar-mass",
"formula",
"stoichiometry"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Molar mass and percent composition by element for a formula, including brackets and hydrates such as CuSO4.5H2O."
}What the leaf hashes
{"body":"3fd20fbc9a28034996263c39b9f147bb8a032e8aee81012ebfa59b992b527f74","id":2202118,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646812546052,"prev":null,"subject":"x402_bazaar:https://chemistry-calc.x402tookit.com/molar-mass","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).
- 0x950635c01d9b869384e35c6d328de576e29aa7191889ad015213e90bcf2930bb
- 0x61460f2de97d0ea54ba0f3578c97f5a37176026ff90a755ec39192a25e9791cb
- 0x92f597382455a65625eddcadbe6b0611dd906d3b758fc8ee7da71021a025fa87
- 0x4b63cd600bcf611323c7bcb7aac522fc549379744e74e6c18f50a2c2cadb4c91
- 0xc061e4a1d5cdf9fd27a0a42b44b39ed93aace47adc0b25de905677d8fbbb67f2
- 0xde5cd0fc363a4afba5161600c965094202f80ce7399741259409eba1766ddcf3
- 0xd9d1f611e5a6033fe863089d45be4373272450e7f5513fb684a985886cb42208
- 0xc558e770b1563379baf8f2f64a42f604a09fcc7c74b7e02e7af7e423010830a0
- 0xe51769aaa5ad7b05e2b2e7b60bf4bd7026df1fd17cdb1f898990c62f1445f2c3
- 0xd8edff843cf646dd6f1004f8641d73f9c4df875efe22fac2dc7e68931946a63e
- 0xefe11a1343a9c2d7a93b447d104bc20b288de6e17292fa152c6543657640cb1c
- 0x93a479000997489c9f10f23b0bab5b0ff25afee590d626a4bbf85ac315b6178f
- 0x80c229343462b4db0b5706d7cf049c63be6fca4613d1e49d2d90b6c7dd36074e
- 0xece99d4dfafa93913edbe131eb22b3d7ab2648b58b5bd9dcd361be4f8953b107
- 0x5d92631d189bd0292c27a05f85a5ec38ec5f4197dfe4660eb991dc6a511e25a6
- 0x5e23ec5954c11a4530aab8c635a72b12bcfeb6fcb03c6cb1a990cc1743424543
- 0x1805ef693fbdb2c23fcb61616f830408ca89bec1dc5b68ee47a770ffc0b9760a
- 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af