ISRC DEF059704806
Verified recording
DEF059704806 is “String Quartet No. 14 in C-Sharp Minor, Op. 131: 6. Adagio quasi un poco andante” by Ludwig van Beethoven,
registered on the CopyrightChains blockchain with CopyrightID
0x838ecbcc3e260d3a11de14d3ef74330529feee4c7a68d469491646d059900b20 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/DEF059704806.
Recording identifiers
- ISRC
- DEF059704806
- Title
- String Quartet No. 14 in C-Sharp Minor, Op. 131: 6. Adagio quasi un poco andante
- Artist
- Ludwig van Beethoven
- CopyrightID (CopyrightChains transaction hash)
0x838ecbcc3e260d3a11de14d3ef74330529feee4c7a68d469491646d059900b20
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:e478d6cbc91431726b077e534dc0399eaacc041c0da092ccd4e233fd6f89e9c0- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059704806
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: String Quartet No. 14 in C-Sharp Minor, Op. 131: 6. Adagio quasi un poco andante · Machine-readable JSON-LD