← The evidence ledger
Evidence row 548704
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://apexfaucet.xyz/api/x402/arc-bridge
- Recorded
- Previous row
- #457292
- Body SHA-256
- ee7dc10607f7bb89044c035c1afbc3902d9088e4d3008e3c9b2a985616f980ae
- Leaf
- 0xf8c6830142d1e82df2b4ef09cc59763e631486de9883704b5b5a8e813281c9c4
What was observed
{
"endpoints": [
[
"x402",
"https://apexfaucet.xyz/api/x402/arc-bridge"
]
],
"name": "Arc CCTP bridge cost",
"owner_address": "0xd334ab5151c624cada654854e2879903dc4217ed",
"raw": {
"accepts": [
{
"amount": "4000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"credentialTypes": [
"authorization"
],
"name": "USD Coin",
"note": "Sign an EIP-3009 transferWithAuthorization to payTo and send it base64 in PAYMENT-SIGNATURE - we settle it and you pay no gas. Or pay and replay the hash in X-PAYMENT-BASE.",
"replayHeader": "X-PAYMENT-BASE",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xd334ab5151c624cada654854e2879903dc4217ed",
"scheme": "exact"
},
{
"amount": "4000",
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"credentialTypes": [
"authorization"
],
"name": "USDC",
"note": "Sign an EIP-3009 transferWithAuthorization to payTo and send it base64 in PAYMENT-SIGNATURE - we settle it and you pay no gas. Or, since USDC is also the native gas token on Arc, send a plain value transfer to payTo and replay the hash in X-PAYMENT-ARC. Finality is instant on inclusion.",
"replayHeader": "X-PAYMENT-ARC",
"rpc": "https://rpc.mainnet.arc.io",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:5042",
"payTo": "0xd334ab5151c624cada654854e2879903dc4217ed",
"scheme": "exact"
},
{
"amount": "4000",
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "GatewayWalletBatched",
"note": "Circle Gateway nanopayment: pay from your Gateway balance with a gas-free signature (validBefore at least 7 days out). Settled by Circle in batches.",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"version": "1"
},
"maxTimeoutSeconds": 604900,
"network": "eip155:5042",
"payTo": "0xd334ab5151c624cada654854e2879903dc4217ed",
"scheme": "exact"
},
{
"amount": "4000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "GatewayWalletBatched",
"note": "Circle Gateway nanopayment: pay from your Gateway balance with a gas-free signature (validBefore at least 7 days out). Settled by Circle in batches.",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"version": "1"
},
"maxTimeoutSeconds": 604900,
"network": "eip155:8453",
"payTo": "0xd334ab5151c624cada654854e2879903dc4217ed",
"scheme": "exact"
},
{
"amount": "4000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D93NE2kMj88BPsHfdZZ4A1HX2CGo14Y18Bdb3J4qtD5c"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "HYiepS7mNCVVKoaDmZLQ6rNtMWHTQqKheM1NLGn1x8kJ",
"scheme": "exact"
},
{
"amount": "10000000000000000",
"asset": "0x8d0D000Ee44948FC98c9B98A4FA4921476f08B0d",
"extra": {
"credentialTypes": [
"authorization"
],
"decimals": 18,
"minUsd": 0.01,
"name": "World Liberty Financial USD",
"note": "BNB Smart Chain: sign an EIP-3009 transferWithAuthorization in USD1 (18 decimals, EIP-712 name \"World Liberty Financial USD\", version \"1\") to payTo and send it base64 in PAYMENT-SIGNATURE; we settle it and pay the gas. Minimum $0.01 on BNB.",
"symbol": "USD1",
"version": "1"
},
"maxTimeoutSeconds": 300,
"network": "eip155:56",
"payTo": "0xd334AB5151C624cAdA654854E2879903Dc4217eD",
"scheme": "exact"
},
{
"amount": "10000000000000000",
"asset": "0xcE24439F2D9C6a2289F741120FE202248B666666",
"extra": {
"credentialTypes": [
"authorization"
],
"decimals": 18,
"minUsd": 0.01,
"name": "United Stables",
"note": "BNB Smart Chain: sign an EIP-3009 transferWithAuthorization in U (18 decimals, EIP-712 name \"United Stables\", version \"1\") to payTo and send it base64 in PAYMENT-SIGNATURE; we settle it and pay the gas. Minimum $0.01 on BNB.",
"symbol": "U",
"version": "1"
},
"maxTimeoutSeconds": 300,
"network": "eip155:56",
"payTo": "0xd334AB5151C624cAdA654854E2879903Dc4217eD",
"scheme": "exact"
}
],
"description": "What it really costs to bring USDC into Arc over Circle CCTP, measured from arrivals rather than quoted. Every arrival we hold with its recipient, the amount credited, the fee CCTP took and the transaction, plus observed fees grouped by transfer size. Read from MintAndWithdraw on TokenMessengerV2 0x28b5a0e9C621a5BadaA536219b3a228C8168cf5d, whose event signature we verified by hashing it rather than assuming it, and filtered to the USDC contract on every single log.",
"extensions": {
"bazaar": {
"info": {
"input": {
"discoverable": true,
"method": "GET",
"type": "http"
},
"output": {
"example": {
"data": {
"ageSeconds": 92,
"arrivals": [],
"chain": "arc",
"chainId": 5042,
"feeBySize": [],
"measuredAt": "2026-10-27T09:12:02.571Z",
"method": {},
"ok": true,
"summary": {},
"tier": "full"
},
"ok": true,
"paid": 0.004
},
"schema": {
"properties": {
"data": {
"type": "object"
},
"ok": {
"type": "boolean"
},
"paid": {
"type": "number"
}
},
"type": "object"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"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/v1791909159/bazaar-icons/f4adc3a60c4cd07b.png",
"lastUpdated": "2026-10-27T09:13:34.617Z",
"quality": {
"l30DaysTotalCalls": 3,
"l30DaysUniquePayers": 3,
"lastCalledAt": "2026-10-27T09:13:34.385Z"
},
"resource": "https://apexfaucet.xyz/api/x402/arc-bridge",
"serviceName": "Arc CCTP bridge cost",
"tags": [
"bridge",
"cctp",
"arc",
"usdc",
"cross-chain"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "What it really costs to bring USDC into Arc over Circle CCTP, measured from arrivals rather than quoted. Every arrival we hold with its recipient, the amount credited, the fee CCTP took and the transaction, plus observed fees grouped by transfer size. Read from MintAndWithdraw on TokenMessengerV2 0x28b5a0e9C621a5BadaA536219b3a228C8168cf5d, whose event signature we verified by hashing it rather than assuming it, and filtered to the USDC contract on every single log."
}What the leaf hashes
{"body":"ee7dc10607f7bb89044c035c1afbc3902d9088e4d3008e3c9b2a985616f980ae","id":548704,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133320823651,"prev":457292,"subject":"x402_bazaar:https://apexfaucet.xyz/api/x402/arc-bridge","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (273461 rows).
- 0xf8c6079268a3da48d4f6811606e85fe492f5f5e7430dd2a20122015ecc84c9a7
- 0x39179d7cd6863f17065d32334fb8896679ffd9a45c910cb6b5672a14b24ca760
- 0x7353d74a77e78f69b144b8480e84a6e2fc1eeea3cc0ac0ad9c5077f2b780cb3f
- 0x516b0d94675b6220b9380bde5ebf6fdc7c2541e11c295d249d2aaed8aeca7144
- 0x48c3267299d6f04405eff322d555f4558cb9f6e8a140b92b144e7f2d0406c9f1
- 0x86a9c683b658152174c84a529b427eec6b8a622a63b4eab5bc1a5c57168cca05
- 0xfe69b8d5cc599afb42e1962760a28cb5ed134b5e010193522580f41a4da1bed8
- 0x5c97fbf8fb8ed07f45c2d83d904ea6a4758be83a89fa1dfc1f92e0a2fd4a2896
- 0xe9faf7e227ec3a53f0a1ca841671a37905b2c9657ecb1d62f0c27a9f239c79a1
- 0xb216d7be3719888c5905d4d551a416130bdb347b2c87c55396c45675287fdff5
- 0x0910ffa4c5b68bfeab876c95d437a268cbe3ce3065ac289e0ccc44dd931c928a
- 0x3d6ce9e9447d644baa93c05c5ec0a44778000bfa82e0208f4a0086c782198964
- 0x2cba9be288dab78cb9c5f54fa13242712b2493da9f833a7c3cdd92cde60662b0
- 0x94d3785ce9330e4580bccada5459380aa2aac76a0bf11354d1353b375afc17d2
- 0xb5b652bba4a5afca56c21031d89b1c06361563aaf54ccc8541c296ceeb2b66fa
- Day root
- 0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795
- Chained
- 0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4
- Published
- On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4