← The evidence ledger
Evidence row 1267
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://x402.ottoai.services/yield-alpha
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 4112080f46a9134de4ac927c20de13319802e534ba09d2fb6eda427f6b9fcd79
- Leaf
- 0x8e0f01d5383ab0a0f0bf0d50d16dc1cb950fbe031cb910762333f5eb20212c72
What was observed
{
"endpoints": [
[
"x402",
"https://x402.ottoai.services/yield-alpha"
]
],
"name": "Otto AI",
"owner_address": "0x0e84ddedaae6a779c462c22a59f301ec31b6b808",
"raw": {
"accepts": [
{
"amount": "2000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
"scheme": "exact"
},
{
"amount": "2000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"assetTransferMethod": "permit2",
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
"scheme": "exact"
},
{
"amount": "2000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "6XcSfqJHr9vNW2vbiRaMqUYVm7shDgLepca54wUTDPN5",
"scheme": "exact"
}
],
"description": "Best DeFi yield opportunities across stablecoins, ETH, and BTC with risk ratings and APY comparisons.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {},
"type": "http"
},
"output": {
"example": {
"data": {
"excludedImplausible": 0,
"exclusions": {
"implausible_apy": {
"action": "excluded from all published rows and aggregates",
"ceiling_pct": 1000,
"count": 0,
"reason": "implausible upstream APY"
}
},
"opportunities": "=== OTTO YIELD ALPHA OPPORTUNITIES ===\nBest Stablecoin: Aave USDC 5.0% ...",
"servingPath": "db-cache"
},
"meta": {
"degraded": false,
"generatedAt": "2026-08-10T12:00:00.000Z",
"sourceHealth": {
"yield-backend": "ok"
},
"stalenessSec": 696
},
"status": "success"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"description": "On success: { opportunities (report text), exclusions.implausible_apy (the plausibility bound's always-present verdict), excludedImplausible (count), servingPath ('db-cache'|'live') }. On failure: an error string."
},
"meta": {
"description": "Freshness block. stalenessSec = age of the cached snapshot, present only on servingPath 'db-cache' and absent on 'live'; generatedAt = when this response was built; degraded = an older good snapshot was served after a refresh failed."
},
"status": {
"enum": [
"success",
"failed"
],
"type": "string"
}
},
"required": [
"status",
"data"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"builder-code": {
"info": {
"a": "bc_hc2dhq09"
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"a": {
"description": "App builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"s": {
"description": "Service builder codes",
"items": {
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"type": "array"
},
"w": {
"description": "Wallet builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
}
},
"type": "object"
}
},
"offer-receipt": {
"info": {
"offers": [
{
"acceptIndex": 0,
"format": "eip712",
"payload": {
"amount": "2000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"network": "eip155:8453",
"payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
"resourceUrl": "https://x402.ottoai.services/yield-alpha",
"scheme": "exact",
"validUntil": 1792574446,
"version": 1
},
"signature": "0x8ea6a4150cef485b94077a5aa5f43783b716962a8e5afa03a30db765e3976a5143bba7eae806fc20821bfaa111f46c16d4b20a16a60b26f5d527d2ce273081cb1c"
},
{
"acceptIndex": 1,
"format": "eip712",
"payload": {
"amount": "2000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"network": "eip155:8453",
"payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
"resourceUrl": "https://x402.ottoai.services/yield-alpha",
"scheme": "exact",
"validUntil": 1792574446,
"version": 1
},
"signature": "0x8ea6a4150cef485b94077a5aa5f43783b716962a8e5afa03a30db765e3976a5143bba7eae806fc20821bfaa111f46c16d4b20a16a60b26f5d527d2ce273081cb1c"
},
{
"acceptIndex": 2,
"format": "eip712",
"payload": {
"amount": "2000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "6XcSfqJHr9vNW2vbiRaMqUYVm7shDgLepca54wUTDPN5",
"resourceUrl": "https://x402.ottoai.services/yield-alpha",
"scheme": "exact",
"validUntil": 1792574446,
"version": 1
},
"signature": "0x7330f6829e7ba562ff08d372f514a4382a3605b52746379b0623ee0fce9eae0158c3ab6f0e0c700e0438b28c6dd0878f942c096120c005190062470f4afe38bb1c"
}
]
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"offers": {
"items": {
"properties": {
"acceptIndex": {
"type": "integer"
},
"format": {
"type": "string"
},
"payload": {
"properties": {
"amount": {
"type": "string"
},
"asset": {
"type": "string"
},
"network": {
"type": "string"
},
"payTo": {
"type": "string"
},
"resourceUrl": {
"type": "string"
},
"scheme": {
"type": "string"
},
"validUntil": {
"type": "integer"
},
"version": {
"type": "integer"
}
},
"required": [
"version",
"resourceUrl",
"scheme",
"network",
"asset",
"payTo",
"amount"
],
"type": "object"
},
"signature": {
"type": "string"
}
},
"required": [
"format",
"signature"
],
"type": "object"
},
"type": "array"
}
},
"required": [
"offers"
],
"type": "object"
}
},
"otto-content-receipt": {},
"sign-in-with-x": {
"info": {
"domain": "x402.ottoai.services",
"issuedAt": "2026-10-21T09:15:46.217Z",
"nonce": "9a1d329e74630c2ef59b163dd7916a5c",
"resources": [
"https://x402.ottoai.services/yield-alpha"
],
"statement": "Sign in to access Otto AI market intelligence",
"uri": "https://x402.ottoai.services/yield-alpha",
"version": "1"
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"address": {
"type": "string"
},
"chainId": {
"type": "string"
},
"domain": {
"type": "string"
},
"expirationTime": {
"format": "date-time",
"type": "string"
},
"issuedAt": {
"format": "date-time",
"type": "string"
},
"nonce": {
"type": "string"
},
"notBefore": {
"format": "date-time",
"type": "string"
},
"requestId": {
"type": "string"
},
"resources": {
"items": {
"format": "uri",
"type": "string"
},
"type": "array"
},
"signature": {
"type": "string"
},
"statement": {
"type": "string"
},
"type": {
"type": "string"
},
"uri": {
"format": "uri",
"type": "string"
},
"version": {
"type": "string"
}
},
"required": [
"domain",
"address",
"uri",
"version",
"chainId",
"type",
"nonce",
"issuedAt",
"signature"
],
"type": "object"
},
"supportedChains": [
{
"chainId": "eip155:8453",
"type": "eip191"
},
{
"chainId": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"type": "ed25519"
}
]
}
},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1781044576/bazaar-icons/84cde0751281b3d0.png",
"lastUpdated": "2026-10-21T09:15:46.267Z",
"quality": {
"l30DaysTotalCalls": 14,
"l30DaysUniquePayers": 13,
"lastCalledAt": "2026-10-21T09:15:45.781Z"
},
"resource": "https://x402.ottoai.services/yield-alpha",
"serviceName": "Otto AI",
"tags": [
"defi yield",
"yield farming",
"apy comparison",
"stablecoin yield"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Best DeFi yield opportunities across stablecoins, ETH, and BTC with risk ratings and APY comparisons."
}What the leaf hashes
{"body":"4112080f46a9134de4ac927c20de13319802e534ba09d2fb6eda427f6b9fcd79","id":1267,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025250054209,"prev":null,"subject":"x402_bazaar:https://x402.ottoai.services/yield-alpha","subject_kind":"source_record"}Proof
Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.