ISRC DEN961731343
Verified recording
DEN961731343 is “Warum betrübst du dich, mein Herz, BWV 421” by Johann Sebastian Bach,
registered on the CopyrightChains blockchain with CopyrightID
0xdbb052ca06019d8a0cc593bf608eb28ff5a8f3cfe1f89aafeecd473088bd0b85 and independently timestamped
in Bitcoin block 960138 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961731343.
Recording identifiers
- ISRC
- DEN961731343
- Title
- Warum betrübst du dich, mein Herz, BWV 421
- Artist
- Johann Sebastian Bach
- CopyrightID (CopyrightChains transaction hash)
0xdbb052ca06019d8a0cc593bf608eb28ff5a8f3cfe1f89aafeecd473088bd0b85
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T19:35:34+00:00
- Bitcoin block
- 960138
- Canonical record hash
sha256:b18165eed7cefdaf29602182fed887293e2a5826a1f6713fcfcf21ed58201d64- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961731343
- Bitcoin block existence check
- https://blockstream.info/api/block/960138
Full record
Track page: Warum betrübst du dich, mein Herz, BWV 421 · Machine-readable JSON-LD