Validate a crypto address offline: format and checksum for EVM EIP-55, Bitcoin, ...
https://saylorinnovations.com/api/crypto/address-checkOverview
Validate a crypto address offline: format and checksum for EVM EIP-55, Bitcoin, Litecoin, Tron, XRP, Solana, TON, Sui, Cosmos and Cardano, with network detection.
Protocol
x402
Price
$0.01
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
Saylor Innovations Data Desk
Source
bazaar
Indexed
2026-10-21 00:23:03
Health
Status
healthy
Latency (p50)
376ms
Uptime (30d)
100.0%
Reliability Score
95/100
Last Checked
2026-10-28 16:17:15
Last Healthy
2026-10-28 16:17:15
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"address": "1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa"
},
"type": "http"
}
Output Schema
{
"example": {
"address": "1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa",
"checksum_failure": false,
"matches": [
{
"checksum": "valid",
"family": "bitcoin-like",
"networks": [
"bitcoin"
],
"normalized": "1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa",
"note": null,
"type": "Bitcoin P2PKH (starts with 1)",
"valid": true
}
],
"note": "Offline structural check: it proves the string is well-formed and its checksum (where the network has one) is correct. It does not prove the address exists, is funded, or belongs to who you think. Always send a small test amount first for large transfers.",
"source": "Computed locally (base58check, bech32/bech32m, EIP-55, CRC16); no external service",
"summary": "Valid Bitcoin P2PKH (starts with 1).",
"valid": true,
"verdict": "valid"
},
"type": "json"
}
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-10-28 16:17:15 | healthy | 402 | 1507ms | |
| 2026-10-28 15:24:26 | healthy | 402 | 351ms | |
| 2026-10-28 14:18:59 | healthy | 402 | 481ms | |
| 2026-10-28 07:03:36 | healthy | 402 | 1560ms | |
| 2026-10-28 05:40:26 | healthy | 402 | 406ms | |
| 2026-10-28 04:42:50 | healthy | 402 | 205ms | |
| 2026-10-28 03:48:50 | healthy | 402 | 345ms | |
| 2026-10-28 02:49:18 | healthy | 402 | 305ms | |
| 2026-10-28 01:44:44 | healthy | 402 | 304ms | |
| 2026-10-28 00:38:27 | healthy | 402 | 378ms | |
| 2026-10-27 23:42:01 | healthy | 402 | 340ms | |
| 2026-10-27 22:55:50 | healthy | 402 | 376ms | |
| 2026-10-27 21:45:11 | healthy | 402 | 316ms | |
| 2026-10-27 20:30:27 | healthy | 402 | 386ms | |
| 2026-10-27 19:25:12 | healthy | 402 | 219ms | |
| 2026-10-26 11:29:24 | healthy | 402 | 880ms | |
| 2026-10-26 05:16:50 | healthy | 402 | 766ms |