ISRC GBBBA7470702
Verified recording
GBBBA7470702 is “Sonata II” by John Cage,
registered on the CopyrightChains blockchain with CopyrightID
0xda455f1abb527fd8cd0c451db5443447022a017690f69e77d92a8aeeee8d25c3 and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA7470702.
Recording identifiers
- ISRC
- GBBBA7470702
- Title
- Sonata II
- Artist
- John Cage
- CopyrightID (CopyrightChains transaction hash)
0xda455f1abb527fd8cd0c451db5443447022a017690f69e77d92a8aeeee8d25c3
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:397cc91c8427c7b1c3387700fe82c037d9a7445e90fe1151a5cf497f4b92788d- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA7470702
- Bitcoin block existence check
- https://blockstream.info/api/block/957118