ISRC GBF077810134
Verified recording
GBF077810134 is “Serenade, op.11: 4. Marcia” by Dag Wirén,
registered on the CopyrightChains blockchain with CopyrightID
0x20b1556c2b318dcec74cff2fbb1afec66d0e20d32d30d4c787eae111487c3394 and independently timestamped
in Bitcoin block 960250 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077810134.
Recording identifiers
- ISRC
- GBF077810134
- Title
- Serenade, op.11: 4. Marcia
- Artist
- Dag Wirén
- CopyrightID (CopyrightChains transaction hash)
0x20b1556c2b318dcec74cff2fbb1afec66d0e20d32d30d4c787eae111487c3394
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T11:13:28+00:00
- Bitcoin block
- 960250
- Canonical record hash
sha256:a41a47ef0cbe0b6368ec97420c5362a5b605df0c88fbbe588ee10f0a6e2a78cd- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077810134
- Bitcoin block existence check
- https://blockstream.info/api/block/960250
Full record
Track page: Serenade, op.11: 4. Marcia · Machine-readable JSON-LD