ISRC USBC10507519
Verified recording
USBC10507519 is “The Contest” by Stephen Sondheim,
registered on the CopyrightChains blockchain with CopyrightID
0x579b31bad6c8c8d22c4a585afb4f420686663d9672ae354bce21773e1de533f9 and independently timestamped
in Bitcoin block 953528 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC10507519.
Recording identifiers
- ISRC
- USBC10507519
- Title
- The Contest
- Artist
- Stephen Sondheim
- CopyrightID (CopyrightChains transaction hash)
0x579b31bad6c8c8d22c4a585afb4f420686663d9672ae354bce21773e1de533f9
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T15:41:10+00:00
- Bitcoin block
- 953528
- Canonical record hash
sha256:9bbe739274bc163182499f365d0cd308dc3166ce4856b1b0202a81464dda58e9- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC10507519
- Bitcoin block existence check
- https://blockstream.info/api/block/953528