Verify a smart contract wallet signature (ERC-1271) on 16 EVM chains for Safe, a...
https://saylorinnovations.com/api/chain/verify-1271Overview
Verify a smart contract wallet signature (ERC-1271) on 16 EVM chains for Safe, account abstraction and other multisig wallets via isValidSignature.
Protocol
x402
Price
$0.01
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
crypto/wallet
Provider
Saylor Innovations Data Desk
Source
bazaar
Indexed
2026-10-21 04:24:45
Health
Status
healthy
Latency (p50)
304ms
Uptime (30d)
100.0%
Reliability Score
95/100
Last Checked
2026-10-28 15:24:06
Last Healthy
2026-10-28 15:24:06
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"chain": "ethereum",
"contract": "0x849D52316331967b6fF1198e5E32A0eB168D039d",
"hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"signature": "0x00"
},
"type": "http"
}
Output Schema
{
"example": {
"chain": "ethereum",
"chain_id": 1,
"contract": "0x849D52316331967b6fF1198e5E32A0eB168D039d",
"hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"note": "The wallet contract reverted when asked to validate the signature, so it does not implement ERC-1271 or rejected the input.",
"returned_value": null,
"reverted": true,
"signature_bytes": 1,
"source": "Chain JSON-RPC (ethereum)",
"valid": false
},
"type": "json"
}
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-10-28 15:24:06 | healthy | 402 | 3851ms | |
| 2026-10-28 14:18:34 | healthy | 402 | 653ms | |
| 2026-10-28 06:58:40 | healthy | 402 | 349ms | |
| 2026-10-28 05:37:07 | healthy | 402 | 304ms | |
| 2026-10-28 04:38:59 | healthy | 402 | 337ms | |
| 2026-10-28 03:45:26 | healthy | 402 | 213ms | |
| 2026-10-28 02:45:05 | healthy | 402 | 331ms | |
| 2026-10-28 01:41:01 | healthy | 402 | 299ms | |
| 2026-10-28 00:34:59 | healthy | 402 | 204ms | |
| 2026-10-27 23:38:38 | healthy | 402 | 187ms | |
| 2026-10-27 22:52:08 | healthy | 402 | 1743ms | |
| 2026-10-27 21:41:45 | healthy | 402 | 572ms | |
| 2026-10-27 20:26:40 | healthy | 402 | 264ms | |
| 2026-10-27 19:21:20 | healthy | 402 | 271ms | |
| 2026-10-26 07:25:33 | healthy | 402 | 272ms | |
| 2026-10-25 20:13:10 | healthy | 402 | 294ms |