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)
529ms
Uptime (30d)
100.0%
Reliability Score
90/100
Last Checked
2026-09-13 18:16:52
Last Healthy
2026-09-13 18:16:52
Consecutive Failures
0
Macaroon Format
Format
Unknown
lnget Compatible
No — non-standard format
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-09-13 18:16:52 | healthy | 402 | 255ms | |
| 2026-09-13 06:49:24 | healthy | 402 | 538ms | |
| 2026-09-13 00:23:12 | healthy | 402 | 525ms | |
| 2026-09-12 13:36:16 | healthy | 402 | 519ms | |
| 2026-09-12 02:33:08 | healthy | 402 | 529ms | |
| 2026-09-11 06:27:43 | healthy | 402 | 537ms | |
| 2026-09-10 19:40:58 | healthy | 402 | 568ms |