← The evidence ledger
Evidence row 119640
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://saylorinnovations.com/api/dev/mime
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- e0f40437f05599289868d83808fd71d0a27c679b90d116c831029e0f1246fff1
- Leaf
- 0x7349150a213b526546af1821df3fc4b9d0ad8b2a40f345b9e02f5c52fac438b2
What was observed
{
"endpoints": [
[
"x402",
"https://saylorinnovations.com/api/dev/mime"
]
],
"name": "Saylor Innovations Data Desk",
"owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:mime-lookup",
"name": "USD Coin",
"note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:mime-lookup",
"name": "USD Coin",
"note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:137",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:mime-lookup",
"name": "USD Coin",
"note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:42161",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
"memo": "saylor:datadesk:mime-lookup",
"reference": "76EyZnae6GQRPKCdyXdt2iJiaiCYP9ERVv5AUrAtV5FN",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazptaW1lLWxvb2t1cCIsInJlZmVyZW5jZSI6Ijc2RXlabmFlNkdRUlBLQ2R5WGR0MmlKaWFpQ1lQOUVSVnY1QVVyQXRWNUZOIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI1NDY0MjY4MTB9.UiXeIp-WBfwgY4AYtOi0FmeQuzhH9k4_Ij7Gr9iyGOQ"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
"memo": "saylor:datadesk:mime-lookup",
"reference": "321puAUawmxsTky21462FG6V6TkZ1aiTSUChqUVLNCXP",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazptaW1lLWxvb2t1cCIsInJlZmVyZW5jZSI6IjMyMXB1QVVhd214c1RreTIxNDYyRkc2VjZUa1oxYWlUU1VDaHFVVkxOQ1hQIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRXM5dk1GcnphQ0VSbUpmckY0SDJGWUQ0S0NvTmtZMTFNY0NlOEJlbndOWUIiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI1NDY0MjY4MTB9.rjG1uNgTFKtM_w0VTHl3P1GY6tmBc9OONVdiQ5b9Tmc"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
},
{
"amount": "90968",
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:datadesk:mime-lookup",
"native": true,
"note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
"quotedLamports": "93782",
"reference": "2xH78gSmbwV2DF1Qy3W2dRjstp82u4g9UCiYEU81iv2J",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazptaW1lLWxvb2t1cCIsInJlZmVyZW5jZSI6IjJ4SDc4Z1NtYndWMkRGMVF5M1cyZFJqc3RwODJ1NGc5VUNpWUVVODFpdjJKIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjpudWxsLCJtaW5BbW91bnQiOjkwOTY4LCJleHAiOjE3OTI1NDY0MjY4MTB9.oIhQdg-SQeuzPI00H-f5pJm95dXDldRxstr86IMq6eU",
"solUsdPrice": 106.63
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
}
],
"description": "MIME type lookup from mime-db - content type for a file extension, extensions for a type, charset, compressibility and IANA source, or search by term",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"q": "webp"
},
"type": "http"
},
"output": {
"example": {
"count": 1,
"matched_by": "file extension",
"primary": {
"charset": null,
"compressible": null,
"extensions": [
"webp"
],
"source": "iana",
"type": "image/webp"
},
"query": "webp",
"source": "mime-db (MIT) compiled from the IANA media types registry and common usage",
"total_matches": 1,
"types": [
{
"charset": null,
"compressible": null,
"extensions": [
"webp"
],
"source": "iana",
"type": "image/webp"
}
]
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"q": {
"description": "File extension (png), MIME type (application/json) or a search term (font)",
"type": "string"
}
},
"required": [
"q"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"count": {
"description": "Number of items returned",
"type": "number"
},
"matched_by": {
"description": "Matched by",
"type": "string"
},
"primary": {
"description": "Best match with type, extensions, charset and compressibility",
"properties": {
"charset": {
"description": "Default charset"
},
"compressible": {
"description": "Whether it compresses well"
},
"extensions": {
"description": "File extensions",
"type": [
"array",
"null"
]
},
"source": {
"description": "Data source the values come from",
"type": [
"string",
"null"
]
},
"type": {
"description": "Type or kind",
"type": [
"string",
"null"
]
}
},
"type": "object"
},
"query": {
"description": "The query as the server interpreted it",
"type": "string"
},
"source": {
"description": "Data source the values come from",
"type": "string"
},
"total_matches": {
"description": "Total number of matches before any limit is applied",
"type": "number"
},
"types": {
"description": "Types",
"items": {
"properties": {
"charset": {
"description": "Default charset, if any"
},
"compressible": {
"description": "Whether it compresses well, null if unknown"
},
"extensions": {
"description": "File extensions",
"type": [
"array",
"null"
]
},
"source": {
"description": "Data source the values come from"
},
"type": {
"description": "Type or kind"
}
},
"type": "object"
},
"type": "array"
}
},
"required": [
"query",
"primary"
],
"type": "object"
},
"type": {
"const": "json",
"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/v1791811517/bazaar-icons/bc5e2b3d111ebbef.jpg",
"lastUpdated": "2026-10-21T01:31:46.874Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-21T01:31:46.534Z"
},
"resource": "https://saylorinnovations.com/api/dev/mime",
"serviceName": "Saylor Innovations Data Desk",
"tags": [
"content type for a file",
"mime type of webp",
"extensions for application/json",
"is this mime type compressible",
"iana media type lookup"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "MIME type lookup from mime-db - content type for a file extension, extensions for a type, charset, compressibility and IANA source, or search by term"
}What the leaf hashes
{"body":"e0f40437f05599289868d83808fd71d0a27c679b90d116c831029e0f1246fff1","id":119640,"kind":"listing","method":"baseline/1","observed_us":1793025616237140,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/dev/mime","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).
- 0x73492014d8020d943bd649c2b6117366a6509d3f9d5bebeb735de35afc79404c
- 0x86bceb959165795b6812a0b9a64b89bb6b3b0a363ecae60e0be42d34cc11f5e3
- 0x60730b2da74b2e07fbb050ec78d9d624745b43c3a84b7fbf79423c9f00aa191f
- 0x04a247f7b6ae5050bf1a03ca7044ba610908799c2ee153842c01ee90a27282ea
- 0xc5e589762e5172fb24e9510638120839155bb1485cfd5689f3dfd09a172d60de
- 0xe8236537d4079fe2a36988c58396919f76a74f9a89554cf964342dabf76ff231
- 0xb015bc4d78519e676c0b611bd117af169a5bc696152b34869c567e38f295b2b2
- 0xe2fadef6928ac1f9a6cb8c37e4f6a1a4df01160d95ad57a938ade4b8cb99dffd
- 0x6423b6b4c84704ed195c7ae71a3365d748f95993ce7ce76b600f785d88b9eddd
- 0xc2fcd11ef5af6a59df481070e310192a7ac0d719b88489223003ed02d68e2c79
- 0x4ad1cba264cd30b4cce9fb7c52897b51c3d91649c3d00e37d10c56aed923e338
- 0x3f193b47c78cf4e7b9e4988cd716854b0e1011e5fcbca161f5a885f1aa02857d
- 0x06064dc1eb2363bec8c2a752e0a28aafc4bf0cb21d1b1b755821c1575bb77a96
- 0xc4fe2177880ea1b0e82b6fe4c270090fd0fbe5af3a42a8cbf6a6ba2fa35625f6
- 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
- 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
- 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae