Overview
Verify a SHA-256 document hash on the Bitcoin blockchain. Returns OP_RETURN proof with block height, tx ID, and merkle path. POST {action: l402_timestamp_verify, hash: <sha256hex>} to certvera.com/api/l402. Free, rate-limited to 10 req/min. No account needed.
Protocol
L402
Price
—
Payment Asset
BTC
Payment Network
Lightning
Category
identity
Provider
Paul
Source
satring
Indexed
2026-03-17 18:59:38
Health
Status
healthy
Latency (p50)
532ms
Uptime (30d)
100.0%
Reliability Score
90/100
Last Checked
2026-07-26 14:20:22
Last Healthy
2026-07-26 14:20:22
Consecutive Failures
0
Macaroon Format
Format
Unknown
lnget Compatible
No — non-standard format
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-07-26 14:20:22 | healthy | 402 | 507ms | |
| 2026-07-26 13:30:49 | healthy | 402 | 515ms | |
| 2026-07-26 08:06:51 | healthy | 402 | 547ms | |
| 2026-07-26 02:14:18 | healthy | 402 | 495ms | |
| 2026-07-25 23:36:12 | healthy | 402 | 541ms | |
| 2026-07-25 21:32:56 | healthy | 402 | 545ms | |
| 2026-07-25 18:45:32 | healthy | 402 | 529ms | |
| 2026-07-25 13:54:20 | healthy | 402 | 549ms | |
| 2026-07-25 09:06:21 | healthy | 402 | 530ms | |
| 2026-07-25 06:06:04 | healthy | 402 | 532ms | |
| 2026-07-25 02:23:37 | healthy | 402 | 582ms | |
| 2026-07-24 21:55:35 | healthy | 402 | 601ms | |
| 2026-07-24 18:04:52 | healthy | 402 | 550ms | |
| 2026-07-24 11:49:25 | healthy | 402 | 552ms | |
| 2026-07-24 08:39:42 | healthy | 402 | 528ms | |
| 2026-07-24 03:29:41 | healthy | 402 | 509ms | |
| 2026-07-24 00:40:43 | healthy | 402 | 516ms | |
| 2026-07-23 19:22:45 | healthy | 402 | 530ms | |
| 2026-07-23 16:43:38 | healthy | 402 | 537ms |