ISRC QZU9S2300291
Verified recording
QZU9S2300291 is “Trees” by Tom Lehrer,
registered on the CopyrightChains blockchain with CopyrightID
0x82794540390f4edb49705db8b8a6b3416669b4c0d2fe3237981f11e3fce258d7 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/QZU9S2300291.
Recording identifiers
- ISRC
- QZU9S2300291
- Title
- Trees
- Artist
- Tom Lehrer
- CopyrightID (CopyrightChains transaction hash)
0x82794540390f4edb49705db8b8a6b3416669b4c0d2fe3237981f11e3fce258d7
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:3d5a092999102293398f1d2d5f9249f79e6ea0dee8c86d41e4f5aff2acf8566d- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZU9S2300291
- Bitcoin block existence check
- https://blockstream.info/api/block/956304