ISRC USKC61620011
Verified recording
USKC61620011 is “Requiem, Op. 33b” by Jón Leifs,
registered on the CopyrightChains blockchain with CopyrightID
0xdbb87b517fc7c106ca19a1c499cdf7047adaf6dd2efc185ac8b5e9650ec800ac and independently timestamped
in Bitcoin block 960327 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC61620011.
Recording identifiers
- ISRC
- USKC61620011
- Title
- Requiem, Op. 33b
- Artist
- Jón Leifs
- CopyrightID (CopyrightChains transaction hash)
0xdbb87b517fc7c106ca19a1c499cdf7047adaf6dd2efc185ac8b5e9650ec800ac
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T00:26:26+00:00
- Bitcoin block
- 960327
- Canonical record hash
sha256:1a9cf9910ebf94e50b36f398612cd7f3ab0a053b919400721d64ef11dfba5195- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC61620011
- Bitcoin block existence check
- https://blockstream.info/api/block/960327