ISRC USUM71305797
Verified recording
USUM71305797 is “Letter” by B. Smyth,
registered on the CopyrightChains blockchain with CopyrightID
0xcc68732e83c804e30b92ae6f6111fad25884f29b04a5eddb5fd2df664a27c11d and independently timestamped
in Bitcoin block 953515 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71305797.
Recording identifiers
- ISRC
- USUM71305797
- Title
- Letter
- Artist
- B. Smyth
- CopyrightID (CopyrightChains transaction hash)
0xcc68732e83c804e30b92ae6f6111fad25884f29b04a5eddb5fd2df664a27c11d
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T12:53:06+00:00
- Bitcoin block
- 953515
- Canonical record hash
sha256:ba7d95cceaaffffc8f6866b1335e9947685f371afadcae6c531ea3cf2b6164d8- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71305797
- Bitcoin block existence check
- https://blockstream.info/api/block/953515