ISRC GBSMU4901378
Verified recording
GBSMU4901378 is “Nocturne for Isabella No. 11 in B Minor” by Carlos Marquez,
registered on the CopyrightChains blockchain with CopyrightID
0x5e8d29a0d13573831cb89275548918aa27eaeb660c96a4dcec10ad65d1e989b2 and independently timestamped
in Bitcoin block 960418 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU4901378.
Recording identifiers
- ISRC
- GBSMU4901378
- Title
- Nocturne for Isabella No. 11 in B Minor
- Artist
- Carlos Marquez
- CopyrightID (CopyrightChains transaction hash)
0x5e8d29a0d13573831cb89275548918aa27eaeb660c96a4dcec10ad65d1e989b2
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T15:20:15+00:00
- Bitcoin block
- 960418
- Canonical record hash
sha256:c323c549d0e468a186c27aa154460ce813a77fa73bbd28385e155c8d3cc50cd6- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU4901378
- Bitcoin block existence check
- https://blockstream.info/api/block/960418
Full record
Track page: Nocturne for Isabella No. 11 in B Minor · Machine-readable JSON-LD