ISRC US38W1728308
Verified recording
US38W1728308 is “Song for John” by Yoko Ono,
registered on the CopyrightChains blockchain with CopyrightID
0xbca2b863d0c66584284023a406d48a2202313303ce46bc9c965550fce2746ff0 and independently timestamped
in Bitcoin block 956304 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US38W1728308.
Recording identifiers
- ISRC
- US38W1728308
- Title
- Song for John
- Artist
- Yoko Ono
- CopyrightID (CopyrightChains transaction hash)
0xbca2b863d0c66584284023a406d48a2202313303ce46bc9c965550fce2746ff0
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:5362b6aaad1ed8f86a4f44bc5e221c6ba74b11270164332c9770737fc358f1f5- Verification API (seven-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US38W1728308
- Bitcoin block existence check
- https://blockstream.info/api/block/956304