ISRC USBC10500256
Verified recording
USBC10500256 is “Old Friends” by Stephen Sondheim,
registered on the CopyrightChains blockchain with CopyrightID
0x8edc8a09308535532222eddc8d9146120f5fe1c48ae010b2e6cd55b4ef745c21 and independently timestamped
in Bitcoin block 960144 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC10500256.
Recording identifiers
- ISRC
- USBC10500256
- Title
- Old Friends
- Artist
- Stephen Sondheim
- CopyrightID (CopyrightChains transaction hash)
0x8edc8a09308535532222eddc8d9146120f5fe1c48ae010b2e6cd55b4ef745c21
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T21:09:47+00:00
- Bitcoin block
- 960144
- Canonical record hash
sha256:ae1b24eb2f6873b7713735c830923d9ecd09c53ad9941381c8a79736a324b47d- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC10500256
- Bitcoin block existence check
- https://blockstream.info/api/block/960144