← The evidence ledger
Evidence row 2201528
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://network-calc.x402tookit.com/cidr-ipv6
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- e123489b2f461cdaf7086e2b2e80204f32d1861e2d9a0c36699cd92d02734737
- Leaf
- 0x7b33938c2eb27497493ca0cbcfc0bfef4536c0220b154f3574dfbabbe3a4065f
What was observed
{
"endpoints": [
[
"x402",
"https://network-calc.x402tookit.com/cidr-ipv6"
]
],
"name": "Network Calc",
"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": "IPv6 prefix calculator: first and last address, size, number of /64s, the nth subnet, address type and reverse DNS zone.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"cidr": "2001:db8:abcd::/48",
"index": "5",
"subnetPrefix": 64
},
"type": "http"
},
"output": {
"example": {
"addressType": "documentation (RFC 3849)",
"asOf": "2026-10-11T14:45:30.781Z",
"cidr": "2001:db8:abcd::/48",
"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.",
"expandedFirst": "2001:0db8:abcd:0000:0000:0000:0000:0000",
"expandedLast": "2001:0db8:abcd:ffff:ffff:ffff:ffff:ffff",
"first": "2001:db8:abcd::",
"hostBitsSet": false,
"last": "2001:db8:abcd:ffff:ffff:ffff:ffff:ffff",
"matchedSpecialPrefix": "2001:db8::/32",
"netmask": "ffff:ffff:ffff:0000:0000:0000:0000:0000",
"network": "2001:db8:abcd::",
"notChecked": [
"whether the prefix is allocated or routed (use a registry or routing lookup)",
"operational norms such as /64 per LAN and /48 per site, which are recommendations (RFC 6177)",
"…1 more"
],
"prefixLength": 48,
"reasons": [
"Network address matches the prefix.",
"Reverse zone: d.c.b.a.8.b.d.0.1.0.0.2.ip6.arpa."
],
"reverseZone": "d.c.b.a.8.b.d.0.1.0.0.2.ip6.arpa",
"slash48Count": "1",
"slash64Count": "65536",
"source": "RFC 4291 addressing architecture and RFC 5952 text form, computed locally",
"subnet": {
"cidr": "2001:db8:abcd:5::/64",
"first": "2001:db8:abcd:5::",
"index": "5",
"last": "2001:db8:abcd:5:ffff:ffff:ffff:ffff",
"totalSubnets": "65536"
},
"summary": "2001:db8:abcd::/48: 1208925819614629174706176 addresses, 65536 /64 networks; documentation (RFC 3849).",
"totalAddresses": "1208925819614629174706176",
"totalAddressesPowerOfTwo": 80,
"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": {
"cidr": {
"description": "IPv6 prefix, for example 2001:db8:abcd::/48",
"type": "string"
},
"index": {
"description": "Zero-based number of the subnet to show (with subnetPrefix, default 0)",
"type": "string"
},
"subnetPrefix": {
"description": "Prefix length of subnets to carve (greater than the prefix, up to 128)",
"type": "integer"
}
},
"required": [
"cidr"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"addressType": {
"type": [
"null",
"string"
]
},
"asOf": {
"type": [
"null",
"string"
]
},
"cidr": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"expandedFirst": {
"type": [
"null",
"string"
]
},
"expandedLast": {
"type": [
"null",
"string"
]
},
"first": {
"type": [
"null",
"string"
]
},
"hostBitsSet": {
"type": [
"boolean",
"null"
]
},
"last": {
"type": [
"null",
"string"
]
},
"matchedSpecialPrefix": {
"type": [
"null",
"string"
]
},
"netmask": {
"type": [
"null",
"string"
]
},
"network": {
"type": [
"null",
"string"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"prefixLength": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reverseZone": {
"type": [
"null",
"string"
]
},
"slash48Count": {
"type": [
"null",
"string"
]
},
"slash64Count": {
"type": [
"null",
"string"
]
},
"source": {
"type": [
"null",
"string"
]
},
"subnet": {
"properties": {
"cidr": {
"type": [
"null",
"string"
]
},
"first": {
"type": [
"null",
"string"
]
},
"index": {
"type": [
"null",
"string"
]
},
"last": {
"type": [
"null",
"string"
]
},
"totalSubnets": {
"type": [
"null",
"string"
]
}
},
"type": [
"null",
"object"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"totalAddresses": {
"type": [
"null",
"string"
]
},
"totalAddressesPowerOfTwo": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T23:40:31.045Z",
"quality": {
"l30DaysTotalCalls": 3,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T23:40:30.853Z"
},
"resource": "https://network-calc.x402tookit.com/cidr-ipv6",
"serviceName": "Network Calc",
"tags": [
"ipv6",
"cidr",
"subnetting",
"prefix"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "IPv6 prefix calculator: first and last address, size, number of /64s, the nth subnet, address type and reverse DNS zone."
}What the leaf hashes
{"body":"e123489b2f461cdaf7086e2b2e80204f32d1861e2d9a0c36699cd92d02734737","id":2201528,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646805847138,"prev":null,"subject":"x402_bazaar:https://network-calc.x402tookit.com/cidr-ipv6","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).
- 0x7b341267881e648e131dc05a90a83434c272982cc420ce12f1cf599c57c62fa4
- 0x6109035d4214e0ac83e428eb1858c8f5cfe7890f665adbdb5d6814b875035548
- 0x71179583990e57cb0918c262faf8d71d194271805d86c36d3ea9d9d293697ec5
- 0x798c43d79625f10b632906f415c9e3348004b3039e9b3e9560671b1b627e4252
- 0x477696427067ddade8af7f3ffbd58ac1238c2ae40a23b417a8b66e90cc2f3dd0
- 0x5bcf1b49a011ff336069cf01b3f75ca85ffa50b9870d3794028659b1f1565a7f
- 0x57ff664e83510252c6ea9a2d7162f047644369897d09147d864653233b216fba
- 0x4e223db92c31b17c873ed3857aef1f6f561a1528a1f2c25d1fe5ae31bdfecf0f
- 0x5da0fdeaaf94935531a773c67fc945d935ed88e1ce19abd0ba18f305d84511b5
- 0x2c34d1fdebaf26e3d2ddf38ad374cc6a202866c1a930b82b22a5e9cb5424ec61
- 0x23e800a31c3d377c9e738609e191a91fbbae12e640ab9806c590bcb812eace50
- 0xfcd0e9ac09d1024a3b3c2c53833a2f8b8f6093d7780c5b7b88b4ae6e988fd7eb
- 0x96da2b0c348fe4c196311a3c711ae28b065713c442f3976e291c0a6f22cb1f7e
- 0x3e60cda43ffc319c006284ca48609bc80da357b45fb9e0a57810e00816d3e8e0
- 0x46991481c678139203ebc3c532867ce1643c09ddc33966c4fb48bb7f033ab22f
- 0x3b89dd05634a82075204d3c671f613081ddfd9df739c64c0a8f39081bdfa32c7
- 0x1805ef693fbdb2c23fcb61616f830408ca89bec1dc5b68ee47a770ffc0b9760a
- 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af