ISRC USB961110501
Verified recording
USB961110501 is “Prologue” by Stephen Sondheim,
registered on the CopyrightChains blockchain with CopyrightID
0x393242adaacde25c8b40ee0d55bcadaac7c445511d826eb6c27d69c59fec2745 and independently timestamped
in Bitcoin block 956304 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB961110501.
Recording identifiers
- ISRC
- USB961110501
- Title
- Prologue
- Artist
- Stephen Sondheim
- CopyrightID (CopyrightChains transaction hash)
0x393242adaacde25c8b40ee0d55bcadaac7c445511d826eb6c27d69c59fec2745
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:4d4da952fd3fd9aea50515e7ca2c74665144002403c4da3545c48bffbdd51498- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB961110501
- Bitcoin block existence check
- https://blockstream.info/api/block/956304