ISRC GBSMU4111272
Verified recording
GBSMU4111272 is “Nocturne-Valse in C Minor No. 4” by Carlos Marquez,
registered on the CopyrightChains blockchain with CopyrightID
0x19b48f16e51a2930b88ad522969e74765730a1e7dbff81e5799f9f9574e6d829 and independently timestamped
in Bitcoin block 960339 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU4111272.
Recording identifiers
- ISRC
- GBSMU4111272
- Title
- Nocturne-Valse in C Minor No. 4
- Artist
- Carlos Marquez
- CopyrightID (CopyrightChains transaction hash)
0x19b48f16e51a2930b88ad522969e74765730a1e7dbff81e5799f9f9574e6d829
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T03:13:37+00:00
- Bitcoin block
- 960339
- Canonical record hash
sha256:1c2bb15236fbb23e04e45d7caa38be33c3b4bf4a249aab3ee47f11c019c46cab- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU4111272
- Bitcoin block existence check
- https://blockstream.info/api/block/960339
Full record
Track page: Nocturne-Valse in C Minor No. 4 · Machine-readable JSON-LD