← The evidence ledger
Evidence row 2201311
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://bitcoin-network.x402tookit.com/btc-fee-estimate
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- e07f64d70a74d9e1db76df612c197b82fe4e7980e1739856fdbdf57e1d152115
- Leaf
- 0xfd883a50e5bfd302ef024c04fefddb5ff3ee696bb7c169ed213fe527f3be0c41
What was observed
{
"endpoints": [
[
"x402",
"https://bitcoin-network.x402tookit.com/btc-fee-estimate"
]
],
"name": "Bitcoin Network",
"owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
"raw": {
"accepts": [
{
"amount": "30000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"transactionVersions": [
0
]
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact"
}
],
"description": "Bitcoin fee rates for next-block to economy confirmation, mempool congestion level and the cost of a typical transaction.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"vbytes": 141
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-11T05:14:44.047Z",
"backlogBlocks": 8,
"congestion": "CLEAR",
"cost": {
"economy": {
"sats": 141,
"usd": 0.117
},
"fastest": {
"sats": 282,
"usd": 0.2339
},
"halfHour": {
"sats": 141,
"usd": 0.117
},
"hour": {
"sats": 141,
"usd": 0.117
}
},
"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.",
"economySatPerVb": 1,
"fastestSatPerVb": 2,
"halfHourSatPerVb": 1,
"hourSatPerVb": 1,
"mempoolTxCount": 79793,
"mempoolVsize": 40465808,
"minimumSatPerVb": 1,
"notChecked": [
"fee changes after this moment (blocks arrive randomly, about every 10 minutes)",
"replace-by-fee or child-pays-for-parent strategies",
"…1 more"
],
"reasons": [
"Fees are at or near the floor: next-block inclusion costs little. A long backlog of very-low-fee transactions can still exist and does not affect you if you pay the next-block rate.",
"79793 unconfirmed transactions, 40.5 MvB."
],
"source": "mempool.space",
"sourceUrl": "https://mempool.space",
"summary": "Next-block fee 2 sat/vB (about 282 sats, $0.2339 for 141 vB); economy 1 sat/vB. Mempool: 8 blocks of backlog.",
"vbytes": 141,
"verdict": "CLEAR"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"vbytes": {
"description": "Transaction size in vbytes (default 141, a 1-in 2-out native SegWit send)",
"type": "integer"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"backlogBlocks": {
"type": [
"null",
"number"
]
},
"congestion": {
"type": [
"null",
"string"
]
},
"cost": {
"properties": {
"economy": {
"properties": {
"sats": {
"type": [
"null",
"number"
]
},
"usd": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"fastest": {
"properties": {
"sats": {
"type": [
"null",
"number"
]
},
"usd": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"halfHour": {
"properties": {
"sats": {
"type": [
"null",
"number"
]
},
"usd": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"hour": {
"properties": {
"sats": {
"type": [
"null",
"number"
]
},
"usd": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
}
},
"type": [
"null",
"object"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"economySatPerVb": {
"type": [
"null",
"number"
]
},
"fastestSatPerVb": {
"type": [
"null",
"number"
]
},
"halfHourSatPerVb": {
"type": [
"null",
"number"
]
},
"hourSatPerVb": {
"type": [
"null",
"number"
]
},
"mempoolTxCount": {
"type": [
"null",
"number"
]
},
"mempoolVsize": {
"type": [
"null",
"number"
]
},
"minimumSatPerVb": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"sourceUrl": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"vbytes": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-02T04:05:59.079Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-02T04:05:58.841Z"
},
"resource": "https://bitcoin-network.x402tookit.com/btc-fee-estimate",
"serviceName": "Bitcoin Network",
"tags": [
"bitcoin",
"fees",
"mempool"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Bitcoin fee rates for next-block to economy confirmation, mempool congestion level and the cost of a typical transaction."
}What the leaf hashes
{"body":"e07f64d70a74d9e1db76df612c197b82fe4e7980e1739856fdbdf57e1d152115","id":2201311,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646803271281,"prev":null,"subject":"x402_bazaar:https://bitcoin-network.x402tookit.com/btc-fee-estimate","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).
- 0xfd882fd50785e047441dde13bbb76203c711e215c93b75eb51aab819a0331454
- 0xb422d38ff21d56afed7462ca64a4e11e4eedff6e503f63c368a8ca296a045add
- 0xed595e4f096b3d93ec4c0567178cfe74aff61826b7a2e7f5f1be32d223b2a777
- 0xb5344132d18a93b1376be96a3a0761235287a6486a056ffb5086ecb3edd231a1
- 0xd82c5d9443af315705f71170c64241d19ec8b07feeeaa1df754072955a72a653
- 0x824d26267fd319792090f2eeb404d614fb6313d8b5aac2feac5ef3b39a7bd7e1
- 0x77f07ebf389233b2a0c8140cf9a917d2beb1f9f0a5aaf17a03037db7a603f486
- 0xe4054ce2cb58b4b4a85c682080fb6d85e8e37c176921e3aa7a588ea2bd1e315b
- 0xd5d8d65b7005e027fe758543c6dd5fc0df24faabf8760828f61088efc4be385f
- 0x3b183355bb726cdc52d8456d2a49f5539cfb7c1f2d4755e060401e4c9ef737ea
- 0x8f376a0576c9d1462239b2f3bfa72d1e7db404c0884807ca3d42144667231cdd
- 0xcf45699f12ed321cb81bb3f661993b9473cc0dc579d286e42718f66c86cf11cb
- 0x2612b2a6ca482d4e1e568f2a6d1980f6401f76dd9a2480fd196bb762b9e1c71c
- 0x59ed3c823c7507ae1b2993d19eda543383739dde961b25c4e0927023fff6be12
- 0x4068a4306db47ea0eae5f76e5137753caa3dbb132dca6a61a4d6c1838a52700f
- 0x25127db2e775737b2874f6a159f7c1bf984317eea6482e94589c3ef4c5ccab32
- 0xec5d643575d83c9e07e65deeef71943b53cbf3007e7e2b9a6ef414081509b0cc
- 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af