ISRC QM3DF2243731
Verified recording
QM3DF2243731 is “Didn´t We” by Johnny Hartman,
registered on the CopyrightChains blockchain with CopyrightID
0x2107fb58ffc15690756facc5e36e98eb19461f1532bf387a2b0ae3af3d7af9a2 and independently timestamped
in Bitcoin block 960473 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM3DF2243731.
Recording identifiers
- ISRC
- QM3DF2243731
- Title
- Didn´t We
- Artist
- Johnny Hartman
- CopyrightID (CopyrightChains transaction hash)
0x2107fb58ffc15690756facc5e36e98eb19461f1532bf387a2b0ae3af3d7af9a2
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T22:27:44+00:00
- Bitcoin block
- 960473
- Canonical record hash
sha256:38270c6423df5feba6e635e9db221e867ff0978362a546ec37e5132d88dc25dc- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM3DF2243731
- Bitcoin block existence check
- https://blockstream.info/api/block/960473