ISRC NLQK91800004
Verified recording
NLQK91800004 is “Sinfonia No. 4 in D min, BWV 775” by Johann Sebastian Bach,
registered on the CopyrightChains blockchain with CopyrightID
0x3ab25c7ed2dc84b8b4b57988cc91c343bf2b93c23f94a1a57febab68d343c1b6 and independently timestamped
in Bitcoin block 960441 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLQK91800004.
Recording identifiers
- ISRC
- NLQK91800004
- Title
- Sinfonia No. 4 in D min, BWV 775
- Artist
- Johann Sebastian Bach
- CopyrightID (CopyrightChains transaction hash)
0x3ab25c7ed2dc84b8b4b57988cc91c343bf2b93c23f94a1a57febab68d343c1b6
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T17:29:52+00:00
- Bitcoin block
- 960441
- Canonical record hash
sha256:62e1ef0cecf541607332b99a03ed8cf7ab0eb7a4a669154b33997a9f9354913d- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLQK91800004
- Bitcoin block existence check
- https://blockstream.info/api/block/960441
Full record
Track page: Sinfonia No. 4 in D min, BWV 775 · Machine-readable JSON-LD