ISRC USBC10500378
Verified recording
USBC10500378 is “Wigmaker Sequence: The Ballad of Sweeney Todd: "Sweeney'd Waited Too Long Before" / The Letter” by Stephen Sondheim,
registered on the CopyrightChains blockchain with CopyrightID
0x9d0e0f4057b3fc4fccf508715733ed287bcbfea61e7d742abf3e129180dfc243 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/USBC10500378.
Recording identifiers
- ISRC
- USBC10500378
- Title
- Wigmaker Sequence: The Ballad of Sweeney Todd: "Sweeney'd Waited Too Long Before" / The Letter
- Artist
- Stephen Sondheim
- CopyrightID (CopyrightChains transaction hash)
0x9d0e0f4057b3fc4fccf508715733ed287bcbfea61e7d742abf3e129180dfc243
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09+00:00
- Bitcoin block
- 953520
- Canonical record hash
sha256:9fcf6afde01b9fa907ad218ce22f4b60eaa6960256d7ea948312b4ebe8b4ad46- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC10500378
- Bitcoin block existence check
- https://blockstream.info/api/block/953520
Full record
Track page: Wigmaker Sequence: The Ballad of Sweeney Todd: "Sweeney'd Waited Too Long Before" / The Letter · Machine-readable JSON-LD