ISRC NLSB72300123
Verified recording
NLSB72300123 is “Missa Maria zart Kyrie II” by Jacob Obrecht,
registered on the CopyrightChains blockchain with CopyrightID
0xe31c1a6aae0e07022ed38fb6ad244cea7bd7bd3e8f9c8a9f9b7810f73e4f1bc7 and independently timestamped
in Bitcoin block 960276 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLSB72300123.
Recording identifiers
- ISRC
- NLSB72300123
- Title
- Missa Maria zart Kyrie II
- Artist
- Jacob Obrecht
- CopyrightID (CopyrightChains transaction hash)
0xe31c1a6aae0e07022ed38fb6ad244cea7bd7bd3e8f9c8a9f9b7810f73e4f1bc7
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T16:01:17+00:00
- Bitcoin block
- 960276
- Canonical record hash
sha256:ab60944e3a9da74dd406337794a9ce25f0038cccbcd30493b46d7f681bcd4f75- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLSB72300123
- Bitcoin block existence check
- https://blockstream.info/api/block/960276
Full record
Track page: Missa Maria zart Kyrie II · Machine-readable JSON-LD