ISRC GBSMU4901376
Verified recording
GBSMU4901376 is “Nocturne for Isabella No. 9 in C sharp Minor” by Carlos Marquez,
registered on the CopyrightChains blockchain with CopyrightID
0xaeb30ff32d3f94bb0133cacb6f64be2ee988f5a5e30ed0e66ef7c8fc60b6d13f 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/GBSMU4901376.
Recording identifiers
- ISRC
- GBSMU4901376
- Title
- Nocturne for Isabella No. 9 in C sharp Minor
- Artist
- Carlos Marquez
- CopyrightID (CopyrightChains transaction hash)
0xaeb30ff32d3f94bb0133cacb6f64be2ee988f5a5e30ed0e66ef7c8fc60b6d13f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T17:29:52+00:00
- Bitcoin block
- 960441
- Canonical record hash
sha256:3bc2ed7e1dd959552803d71f494a5a9a04dc0fdfad5422c5ec1b5aa1f16eb49b- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU4901376
- Bitcoin block existence check
- https://blockstream.info/api/block/960441
Full record
Track page: Nocturne for Isabella No. 9 in C sharp Minor · Machine-readable JSON-LD