← The evidence ledger
Evidence row 2201519
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://network-calc.x402tookit.com/voip-bandwidth
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 1783676e3ef93948366b77b0f1ed023156407fbbc8d1e915439cd2426a923a1c
- Leaf
- 0xc1c24b99ec45656b23a6af89088d5d93faf5bda6dd8ab9f6b0e526f52dee255a
What was observed
{
"endpoints": [
[
"x402",
"https://network-calc.x402tookit.com/voip-bandwidth"
]
],
"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": "Bandwidth of a VoIP call (IP and Ethernet level) for a codec and packetization time, and totals for many calls.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"calls": 10,
"codec": "g711",
"ipVersion": 4,
"layer2": "ethernet",
"ptimeMs": 20
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-11T14:45:33.121Z",
"calls": 10,
"callsPerMbps": 11.468,
"codec": "g711",
"codecBitrateKbps": 64,
"codecDescription": "G.711 PCMU/PCMA, 64 kbps",
"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.",
"frameBytes": 218,
"headerBytesIpUdpRtp": 40,
"ipKbpsPerCall": 80,
"ipPacketBytes": 200,
"layer2HeaderBytes": 18,
"linkKbpsPerCall": 87.2,
"notChecked": [
"RTCP (adds roughly 5% of media bandwidth), SRTP authentication tags (4 to 10 bytes), and SIP signalling",
"silence suppression and VAD, which lower the average",
"…3 more"
],
"overheadPercent": 26.61,
"packetsPerSecond": 50,
"payloadBytes": 160,
"ptimeMs": 20,
"reasons": [
"Each packet carries 160 payload bytes plus 40 bytes of IP/UDP/RTP header and 18 bytes of link header; 50 packets per second.",
"Calls are full duplex: the figure applies in each direction."
],
"source": "RTP (RFC 3550) 12-byte header over UDP 8 and IP 20 or 40; codec bitrates per ITU-T G.711, G.722, G.726, G.729; computed locally",
"summary": "g711 at 20 ms: 160-byte payload, 80 kbps at the IP level, 87.2 kbps on ethernet; 10 calls need 872 kbps each way.",
"totalIpKbps": 800,
"totalLinkKbps": 872,
"totalLinkMbps": 0.872,
"verdict": "COMPUTED",
"warning": null
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"bitrateKbps": {
"description": "Codec payload bitrate in kbps (for a custom codec)",
"type": "number"
},
"calls": {
"description": "Number of simultaneous calls (default 1)",
"type": "integer"
},
"codec": {
"description": "g711, g722, g729, g726-32, g726-24, gsm or custom (then give bitrateKbps)",
"type": "string"
},
"ipVersion": {
"description": "4 (default) or 6",
"type": "integer"
},
"layer2": {
"description": "ethernet (default, 18 bytes with FCS), ethernet-vlan (22), ppp (6) or none",
"enum": [
"ethernet",
"ethernet-vlan",
"ppp",
"none"
],
"type": "string"
},
"ptimeMs": {
"description": "Packetization time in ms, 10 to 120 (default 20)",
"type": "number"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"calls": {
"type": [
"null",
"number"
]
},
"callsPerMbps": {
"type": [
"null",
"number"
]
},
"codec": {
"type": [
"null",
"string"
]
},
"codecBitrateKbps": {
"type": [
"null",
"number"
]
},
"codecDescription": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"frameBytes": {
"type": [
"null",
"number"
]
},
"headerBytesIpUdpRtp": {
"type": [
"null",
"number"
]
},
"ipKbpsPerCall": {
"type": [
"null",
"number"
]
},
"ipPacketBytes": {
"type": [
"null",
"number"
]
},
"layer2HeaderBytes": {
"type": [
"null",
"number"
]
},
"linkKbpsPerCall": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"overheadPercent": {
"type": [
"null",
"number"
]
},
"packetsPerSecond": {
"type": [
"null",
"number"
]
},
"payloadBytes": {
"type": [
"null",
"number"
]
},
"ptimeMs": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"totalIpKbps": {
"type": [
"null",
"number"
]
},
"totalLinkKbps": {
"type": [
"null",
"number"
]
},
"totalLinkMbps": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
},
"warning": {}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T23:40:55.43Z",
"quality": {
"l30DaysTotalCalls": 3,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T23:40:55.271Z"
},
"resource": "https://network-calc.x402tookit.com/voip-bandwidth",
"serviceName": "Network Calc",
"tags": [
"voip",
"bandwidth",
"codec",
"rtp"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Bandwidth of a VoIP call (IP and Ethernet level) for a codec and packetization time, and totals for many calls."
}What the leaf hashes
{"body":"1783676e3ef93948366b77b0f1ed023156407fbbc8d1e915439cd2426a923a1c","id":2201519,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646805807216,"prev":null,"subject":"x402_bazaar:https://network-calc.x402tookit.com/voip-bandwidth","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).
- 0xc1c2a1fc168301e25d99e6a1e7f1e64b0bff1fdd7183fc76b012c714b40ffc4a
- 0x26f2fec19a36cb17fadef2d0f6e7794ad3598ac849b9b20801d2919410382336
- 0x64069b051c8dc5e4b69c48ad2cff57055fe14f983954f78fd3e693388807f825
- 0xcd46f2172945ea3db72ee4976f1c24b258b10154bda9bbb4cc6ba2e24326114e
- 0xa568ada61884051554f055a276269d8acadfb4adcfd56364274665643ce624b8
- 0xee15168d536e6aff7285866aa859e18d1473b5e7fd48cd6898f4b394a87c3b0b
- 0x850be98d8b8f126a6da904fd1cb155c6b659e96ebe608c45485aa8465db2b3ca
- 0x5feeb7926e78c30e1052a29d9ab3d94a0618870585f76bf894c6754cdd98b218
- 0x65f751e221bad3017df4dd563fd4f0d86fbf789ece83c2936653ba1060246cc1
- 0xb8eb6724b5a05c77ea41cfee061ddb3ed5c0f062ea3da21975032d7e7aa47688
- 0x8551dbb665117270fe6d547f823354cb1f33f877d36defe3b31cc7b120e917ce
- 0x7ad018da9217f00e9553ad7f613d19ec65a84c3a339588527c8b35c90d6567b4
- 0xd7f4adbe11763ae678ef4c51fd1fa9ddf52bf60add48464d376475766e9accfe
- 0x0b45a0435ea40bcbc48c2b318e8c62aa48a7e6b10e52b4548ada394225a7bd9f
- 0xcbfaf790331071a9b3499a4db6f9d951fe5d04baefda2c66846b52b023ab8ae5
- 0x37d31d28d0bd3743650d57e9fbf999efa4592cac831267f83aa125335b35a16b
- 0xdb8bd933619a267f9790faac9839143d202be46af284371cc369cdf683f897ba
- 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
- 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af