ISRC USB961331722
Verified recording
USB961331722 is “Flashback” by Stephen Sondheim,
registered on the CopyrightChains blockchain with CopyrightID
0x7499b3cf9ba5453b232bc306d07ca68e9d9505383911f30cae37ba91f3a2d93a 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/USB961331722.
Recording identifiers
- ISRC
- USB961331722
- Title
- Flashback
- Artist
- Stephen Sondheim
- CopyrightID (CopyrightChains transaction hash)
0x7499b3cf9ba5453b232bc306d07ca68e9d9505383911f30cae37ba91f3a2d93a
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T00:26:26+00:00
- Bitcoin block
- 960327
- Canonical record hash
sha256:441b9a201cd0a1d941a9580aaed830206b454191b51ce530938b4fe32e161244- Verification API (seven-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB961331722
- Bitcoin block existence check
- https://blockstream.info/api/block/960327