← The evidence ledger
Evidence row 2201874
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://us-tax-calc.x402tookit.com/bracket-lookup
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 838092b1c5cb938cae0d24e7e1a8ce1754487667b208dea873223d314840004b
- Leaf
- 0xe4bba106cd217752782320b454cbc7787a09e897dba3c0064f360ec69dd5b73b
What was observed
{
"endpoints": [
[
"x402",
"https://us-tax-calc.x402tookit.com/bracket-lookup"
]
],
"name": "US Tax 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": "Which US federal income tax bracket a taxable income falls in: marginal rate, bracket edges and dollars to the next bracket.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"filing_status": "single",
"taxable_income": 100000,
"year": 2024
},
"type": "http"
},
"output": {
"example": {
"allBrackets": [
{
"from": 0,
"rate": 0.1,
"to": 11600
},
{
"from": 11600,
"rate": 0.12,
"to": 47150
}
],
"asOf": "2026-10-21T05:43:35.613Z",
"bracketFrom": 47150,
"bracketTo": 100525,
"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.",
"dollarsToNextBracket": 525,
"filingStatus": "single",
"marginalRate": 0.22,
"nextBracketRate": 0.24,
"notChecked": [
"state and local income tax",
"tax credits (child tax credit, earned income, education, energy) and AMT",
"…2 more"
],
"rateOnNextDollar": 0.22,
"reasons": [
"A bracket covers income over its lower edge and not over its upper edge; income exactly at an upper edge is taxed at the lower rate, and the next dollar at the higher rate."
],
"source": "computed locally",
"summary": "2024 Single: taxable income 100000 is in the 22% bracket (47150 to 100525); the next dollar is taxed at 22%.",
"taxOnThisIncome": 17053,
"taxYear": 2024,
"taxableIncome": 100000,
"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": {
"filing_status": {
"description": "single, mfj, mfs, hoh or qss",
"type": "string"
},
"taxable_income": {
"description": "Taxable income in dollars (after deductions)",
"type": "number"
},
"year": {
"description": "Tax year (default: latest bundled)",
"type": "integer"
}
},
"required": [
"taxable_income",
"filing_status"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"allBrackets": {
"items": {
"properties": {
"from": {
"type": [
"null",
"number"
]
},
"rate": {
"type": [
"null",
"number"
]
},
"to": {
"type": [
"null",
"number"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"asOf": {
"type": [
"null",
"string"
]
},
"bracketFrom": {
"type": [
"null",
"number"
]
},
"bracketTo": {
"type": [
"null",
"number"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"dollarsToNextBracket": {
"type": [
"null",
"number"
]
},
"filingStatus": {
"type": [
"null",
"string"
]
},
"marginalRate": {
"type": [
"null",
"number"
]
},
"nextBracketRate": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"rateOnNextDollar": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"taxOnThisIncome": {
"type": [
"null",
"number"
]
},
"taxYear": {
"type": [
"null",
"number"
]
},
"taxableIncome": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T23:23:24.093Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-01T23:23:23.796Z"
},
"resource": "https://us-tax-calc.x402tookit.com/bracket-lookup",
"serviceName": "US Tax Calculators",
"tags": [
"tax",
"irs",
"brackets",
"marginal-rate"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Which US federal income tax bracket a taxable income falls in: marginal rate, bracket edges and dollars to the next bracket."
}What the leaf hashes
{"body":"838092b1c5cb938cae0d24e7e1a8ce1754487667b208dea873223d314840004b","id":2201874,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646809987102,"prev":null,"subject":"x402_bazaar:https://us-tax-calc.x402tookit.com/bracket-lookup","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).
- 0xe4bbc6ea443c0b17aef0bb9ce1bd2b18044f26f522acb9c85e61f34cd85e0d43
- 0xed94508e89add1d00ecfb87a4c9b12e38acf3ba8cb072e8bd381ea31a3a410c0
- 0xe0db982ae2c2c884d5f689d637ca59d19f6ffb49078eb7a815f125a6901974f8
- 0xc1725f2a182b4a184f0be2ab856d4e8b27180bb3cd4f3bef485324315fd813f7
- 0xfd39a3ddcb6d459803bb664564bcad13402f09aa2e4e1a7f6bee366c559a9619
- 0x6f86703664ab24669bb4be32a79c52c71bebaf541f4d52879f6871c3411b73da
- 0xce2a3bbd382c949dbcc5c67d4e550b862198ae1a160ea255287d51bd74bf1a03
- 0x675d1394b8494f9a42df13a1db86e32a307f4599a6d269eb881c0995a52351ac
- 0xf40fd2c2417460a57fa4ced28353081ea99826b1cdede79f0a917582f894ca6a
- 0xf9f3890e033134970cec13fa615cb0cbb160c5ea3115c74851d5d49215eae805
- 0xcf1656df47779b123d1f86c1f7f8f7586e0e8f27f4bdc7eb3239bf76a8cd8ae9
- 0x22bf176b50c1376a81c95eb70dd7c6a4714266ec78d08fbb68be60b003a0354c
- 0x5dd9fbf811b05f3e5af51f812b6eea86a039a192f115aecc0fd37a502e3a04f1
- 0x3e441d3f53c7b69d6c73ef93d327dfc3071a522c550856540832b34fcb531738
- 0xd643f764eee39146411d4bff8903a327f4f8f55616e14e57281a245206d6ed2b
- 0x6dd7e4db65395e8670c7c2747d44fec79e03305934ef4746bf5dbca04ec6ec49
- 0xec5d643575d83c9e07e65deeef71943b53cbf3007e7e2b9a6ef414081509b0cc
- 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af