← The evidence ledger
Evidence row 72674
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://coord.taifoon.dev/v1/x402/class/market.price
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 469953a3160e995544f0e44f8a8dbcadd1f6972fa03f0544bc6d6c2cf3fb2642
- Leaf
- 0x50d048275cbfa533235555a4a49ecbbec777bdb31e4217a09f8df36fc797d7e3
What was observed
{
"endpoints": [
[
"x402",
"https://coord.taifoon.dev/v1/x402/class/market.price"
]
],
"name": "Taifoon",
"owner_address": "0x3574999dd4c96eb73bd6e11d4177010c83e14f5b",
"raw": {
"accepts": [
{
"amount": "3000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"description": "Latest USD price of BTC, ETH, SOL, NQ, ES, YM from the Taifoon venue tape: the close of the last closed 1-minute bar, its time, age and sha256 digest, replayable with one GET. Only symbols the tape holds; a price older than 180 s is never served as current (nothing is charged). BTC, ETH, SOL are held to Chainlink on Base within 1 % when its feed is under 1 h old. 0.003 USDC a call.",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxAmountRequired": "3000",
"maxTimeoutSeconds": 300,
"mimeType": "application/json",
"network": "eip155:8453",
"payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
"resource": "https://coord.taifoon.dev/v1/x402/class/market.price",
"scheme": "exact"
},
{
"amount": "3000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"description": "Latest USD price of BTC, ETH, SOL, NQ, ES, YM from the Taifoon venue tape: the close of the last closed 1-minute bar, its time, age and sha256 digest, replayable with one GET. Only symbols the tape holds; a price older than 180 s is never served as current (nothing is charged). BTC, ETH, SOL are held to Chainlink on Base within 1 % when its feed is under 1 h old. 0.003 USDC a call.",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxAmountRequired": "3000",
"maxTimeoutSeconds": 300,
"mimeType": "application/json",
"network": "eip155:42161",
"payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
"resource": "https://coord.taifoon.dev/v1/x402/class/market.price",
"scheme": "exact"
},
{
"amount": "3000",
"asset": "0x3600000000000000000000000000000000000000",
"description": "Latest USD price of BTC, ETH, SOL, NQ, ES, YM from the Taifoon venue tape: the close of the last closed 1-minute bar, its time, age and sha256 digest, replayable with one GET. Only symbols the tape holds; a price older than 180 s is never served as current (nothing is charged). BTC, ETH, SOL are held to Chainlink on Base within 1 % when its feed is under 1 h old. 0.003 USDC a call.",
"extra": {
"name": "USDC",
"version": "2"
},
"maxAmountRequired": "3000",
"maxTimeoutSeconds": 300,
"mimeType": "application/json",
"network": "eip155:5042",
"payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
"resource": "https://coord.taifoon.dev/v1/x402/class/market.price",
"scheme": "exact"
},
{
"amount": "3000",
"asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
"description": "Latest USD price of BTC, ETH, SOL, NQ, ES, YM from the Taifoon venue tape: the close of the last closed 1-minute bar, its time, age and sha256 digest, replayable with one GET. Only symbols the tape holds; a price older than 180 s is never served as current (nothing is charged). BTC, ETH, SOL are held to Chainlink on Base within 1 % when its feed is under 1 h old. 0.003 USDC a call.",
"extra": {
"name": "Global Dollar",
"version": "1"
},
"maxAmountRequired": "3000",
"maxTimeoutSeconds": 300,
"mimeType": "application/json",
"network": "eip155:4663",
"payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
"resource": "https://coord.taifoon.dev/v1/x402/class/market.price",
"scheme": "exact"
},
{
"amount": "3000",
"asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
"description": "Latest USD price of BTC, ETH, SOL, NQ, ES, YM from the Taifoon venue tape: the close of the last closed 1-minute bar, its time, age and sha256 digest, replayable with one GET. Only symbols the tape holds; a price older than 180 s is never served as current (nothing is charged). BTC, ETH, SOL are held to Chainlink on Base within 1 % when its feed is under 1 h old. 0.003 USDC a call.",
"extra": {
"name": "USDC",
"version": "2"
},
"maxAmountRequired": "3000",
"maxTimeoutSeconds": 300,
"mimeType": "application/json",
"network": "eip155:143",
"payTo": "0x3574999dd4c96eB73Bd6e11D4177010C83E14f5b",
"resource": "https://coord.taifoon.dev/v1/x402/class/market.price",
"scheme": "exact"
},
{
"amount": "3000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"description": "Latest USD price of BTC, ETH, SOL, NQ, ES, YM from the Taifoon venue tape: the close of the last closed 1-minute bar, its time, age and sha256 digest, replayable with one GET. Only symbols the tape holds; a price older than 180 s is never served as current (nothing is charged). BTC, ETH, SOL are held to Chainlink on Base within 1 % when its feed is under 1 h old. 0.003 USDC a call.",
"extra": {
"feePayer": "F742C4VfFLQ9zRQyithoj5229ZgtX2WqKCSFKgH2EThq"
},
"maxAmountRequired": "3000",
"maxTimeoutSeconds": 300,
"mimeType": "application/json",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "GQcEn5pLcweo7qaiy3rDdsiUPiygygmFBaixNtNqhQVD",
"resource": "https://coord.taifoon.dev/v1/x402/class/market.price",
"scheme": "exact"
}
],
"description": "Latest USD price of BTC, ETH, SOL, NQ, ES, YM from the Taifoon venue tape: the close of the last closed 1-minute bar, its time, age and sha256 digest, replayable with one GET. Only symbols the tape holds; a price older than 180 s is never served as current (nothing is charged). BTC, ETH, SOL are held to Chainlink on Base within 1 % when its feed is under 1 h old. 0.003 USDC a call.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"symbol": "ETH"
},
"type": "http"
},
"output": {
"example": {
"age_s": 41,
"as_of": "2026-10-11T18:20:00.000Z",
"bar": {
"c": 2538.81,
"h": 2539.1,
"l": 2538.6,
"o": 2538.88,
"t": 1791742740,
"tf": "1m",
"v": 12.4
},
"class": "market.price",
"digest": "9f2c…",
"fresh": true,
"ok": true,
"price_usd": 2538.81,
"reference": {
"age_s": 600,
"off_pct": 0.02,
"source": "Chainlink ETH / USD on Base",
"usd": 2539.4
},
"replay": "https://clob.taifoon.dev/tape/v1/candles/ETH/1m?from=1791742740&to=1791742799",
"source": "the Taifoon venue tape (https://clob.taifoon.dev/tape/v1/candles/ETH/1m): the close of the last closed 1-minute bar",
"symbol": "ETH"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"headers": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"additionalProperties": {
"type": "string"
},
"properties": {
"symbol": {
"description": "the symbol to price: one the Taifoon venue tape holds",
"enum": [
"BTC",
"ETH",
"SOL",
"NQ",
"ES",
"YM"
],
"type": "string"
}
},
"required": [
"symbol"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"age_s": {
"description": "seconds since the bar closed; at most 180, else no price is served",
"type": "integer"
},
"as_of": {
"description": "when the bar closed (ISO 8601)",
"type": "string"
},
"digest": {
"description": "sha256 over the bar’s \"t,o,h,l,c,v\" line (the market.candles digest)",
"type": "string"
},
"price_usd": {
"type": "number"
},
"replay": {
"description": "the tape GET that returns the same bar",
"type": "string"
},
"symbol": {
"enum": [
"BTC",
"ETH",
"SOL",
"NQ",
"ES",
"YM"
],
"type": "string"
}
},
"required": [
"symbol",
"price_usd",
"as_of",
"age_s",
"digest"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791930045/bazaar-icons/4c3bc9abe8ba2916.png",
"lastUpdated": "2026-10-25T23:38:24.587Z",
"quality": {
"l30DaysTotalCalls": 12,
"l30DaysUniquePayers": 8,
"lastCalledAt": "2026-10-25T23:38:19.56Z"
},
"resource": "https://coord.taifoon.dev/v1/x402/class/market.price",
"serviceName": "Taifoon",
"tags": [
"market",
"price"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Latest USD price of BTC, ETH, SOL, NQ, ES, YM from the Taifoon venue tape: the close of the last closed 1-minute bar, its time, age and sha256 digest, replayable with one GET. Only symbols the tape holds; a price older than 180 s is never served as current (nothing is charged). BTC, ETH, SOL are held to Chainlink on Base within 1 % when its feed is under 1 h old. 0.003 USDC a call."
}What the leaf hashes
{"body":"469953a3160e995544f0e44f8a8dbcadd1f6972fa03f0544bc6d6c2cf3fb2642","id":72674,"kind":"listing","method":"baseline/1","observed_us":1793025486356429,"prev":null,"subject":"x402_bazaar:https://coord.taifoon.dev/v1/x402/class/market.price","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
- 0x50d059b00e4fb2799c5e3a41cf24d79f0e82cd61c46a183536d282c8731b4443
- 0x1a71e94877a98accb3017f5e653b2920c6274b01a3b4e8b56c63a281d71651f3
- 0x0c555bd996ba047331ff781e91c94ee387b6acff092b0a422c94ae1c76864998
- 0x5260292961089d739c58a00a3239f8d142db07ac0d37ec72c3e5c0ce5392ec7e
- 0xa015f74339b319ae4aebfcce693a813bca2dd0c7d64b7fa1fdcb7b049858952b
- 0xb82807dd15efb4eee100765951563088dbfcfa2ff0031529ebacfdb1e3deba93
- 0x3ca1ff83a32bba23debe82d7211c9c9e27a041ebafc39f5cd17d7ee4cc4e5862
- 0x80eec53f6f24b3b7a3727806d1a2be0f6f0e5552a11d37c0f70095f232322c62
- 0x368e3df3c24c797da086196225f282efe46aa39be4428ec3e3751153aeb39343
- 0x1cf289732577ec7d4b7786636bf1c834b739571451a5cc67e3aac33256c9be46
- 0xfa039eb62e5d0ae9f7aaaafb0fcbceacfa661b07228233046b9a9af94e547a55
- 0xecaf47ba75097c34f2d3c4d62539dace0db8b484bf08941a9259e2d1e8ccea77
- 0xf7d2cf278e5d2768b8bdb70730c378877cf7165d8efcbec8bcd3282fdc50d177
- 0x0733993143f0230e79482cef2c38e95d98f9eafbe64a43cdc74a4545938a4167
- 0x2be1e80e065dd6b2cc75a7142be22225acd144ac975d70bf24b4f01fd76dc497
- 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
- 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae