CertVera File Upload Timestamp
https://certvera.com/api/l402?action=l402_timestamp_uploadOverview
Timestamp a file on Bitcoin by uploading it directly. File is hashed server-side, stored on Google Cloud, and anchored via OP_RETURN. POST {action: l402_timestamp, file_data: <base64>, filename: <name>} to certvera.com/api/l402. 30,000 sats via L402 (includes 5,000 sat upload surcharge). Max 25 MB. Supports PDF, images, and documents.
Health
Macaroon Format
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-07-01 22:22:57 | degraded | 403 | 589ms | |
| 2026-07-01 17:16:44 | degraded | 403 | 530ms | |
| 2026-07-01 11:14:55 | degraded | 403 | 503ms |