ISRC DEF059404987
Verified recording
DEF059404987 is “String Quartet No. 14 in C Sharp Minor, Op. 131: VII. Allegro” by Ludwig van Beethoven,
registered on the CopyrightChains blockchain with CopyrightID
0xd90c980133f36745f728c6e6935abfa1a87652f741cd737efef31f69b2ad56a9 and independently timestamped
in Bitcoin block 960264 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059404987.
Recording identifiers
- ISRC
- DEF059404987
- Title
- String Quartet No. 14 in C Sharp Minor, Op. 131: VII. Allegro
- Artist
- Ludwig van Beethoven
- CopyrightID (CopyrightChains transaction hash)
0xd90c980133f36745f728c6e6935abfa1a87652f741cd737efef31f69b2ad56a9
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T14:36:16+00:00
- Bitcoin block
- 960264
- Canonical record hash
sha256:db7213796d3e85248291be4ca5dca322bb9ab5f770e99f5de96d36f307fcbd96- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059404987
- Bitcoin block existence check
- https://blockstream.info/api/block/960264
Full record
Track page: String Quartet No. 14 in C Sharp Minor, Op. 131: VII. Allegro · Machine-readable JSON-LD