ISRC GBBBA7470703
Verified recording
GBBBA7470703 is “Sonata III” by John Cage,
registered on the CopyrightChains blockchain with CopyrightID
0x6aa2957f68ac3571755d8967ab1a8b06cd74f6d6ba156abcf2e1cc7d5710f25a and independently timestamped
in Bitcoin block 960368 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA7470703.
Recording identifiers
- ISRC
- GBBBA7470703
- Title
- Sonata III
- Artist
- John Cage
- CopyrightID (CopyrightChains transaction hash)
0x6aa2957f68ac3571755d8967ab1a8b06cd74f6d6ba156abcf2e1cc7d5710f25a
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T08:26:41+00:00
- Bitcoin block
- 960368
- Canonical record hash
sha256:a4ffa057dcab3c88f3d231f3175afbccc9be5146da9f5673ff2ae6336a9cddc6- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA7470703
- Bitcoin block existence check
- https://blockstream.info/api/block/960368