ISRC USBC10500387
Verified recording
USBC10500387 is “The Ballad of Sweeney Todd: "Sweeney Pondered and Sweeney Planned"” by Stephen Sondheim,
registered on the CopyrightChains blockchain with CopyrightID
0xbcd3ab69098bfa88c6a1fdb355e106ab2bb6ae65726b1c3ba2a05e81123f1e7b and independently timestamped
in Bitcoin block 953520 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC10500387.
Recording identifiers
- ISRC
- USBC10500387
- Title
- The Ballad of Sweeney Todd: "Sweeney Pondered and Sweeney Planned"
- Artist
- Stephen Sondheim
- CopyrightID (CopyrightChains transaction hash)
0xbcd3ab69098bfa88c6a1fdb355e106ab2bb6ae65726b1c3ba2a05e81123f1e7b
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09+00:00
- Bitcoin block
- 953520
- Canonical record hash
sha256:75a5736c22b5fa1b00431cbc16deaab258ba1f2a6e63570966552d3166420359- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC10500387
- Bitcoin block existence check
- https://blockstream.info/api/block/953520
Full record
Track page: The Ballad of Sweeney Todd: "Sweeney Pondered and Sweeney Planned" · Machine-readable JSON-LD