ISRC USB960552515
Verified recording
USB960552515 is “The Contest” by Stephen Sondheim,
registered on the CopyrightChains blockchain with CopyrightID
0x9c7eeccf451c1c3c288de0918da8a4b387bf3f359aa2e6ba6f9ce66575eb85bb and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB960552515.
Recording identifiers
- ISRC
- USB960552515
- Title
- The Contest
- Artist
- Stephen Sondheim
- CopyrightID (CopyrightChains transaction hash)
0x9c7eeccf451c1c3c288de0918da8a4b387bf3f359aa2e6ba6f9ce66575eb85bb
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:735302cec63ceb8a77c7d391264f144f7eeb7f66d348ca94996f8b8ffc6bd016- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB960552515
- Bitcoin block existence check
- https://blockstream.info/api/block/957118