ISRC DEF055900265
Verified recording
DEF055900265 is “String Quartet No. 8 in E Minor, Op. 59 No. 2: III. Allegretto” by Ludwig van Beethoven,
registered on the CopyrightChains blockchain with CopyrightID
0xb1b5a54f284f0b4721ac14f7d045565bcff7b2368ead56d796836e9dd624618b and independently timestamped
in Bitcoin block 960468 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF055900265.
Recording identifiers
- ISRC
- DEF055900265
- Title
- String Quartet No. 8 in E Minor, Op. 59 No. 2: III. Allegretto
- Artist
- Ludwig van Beethoven
- CopyrightID (CopyrightChains transaction hash)
0xb1b5a54f284f0b4721ac14f7d045565bcff7b2368ead56d796836e9dd624618b
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T21:25:57+00:00
- Bitcoin block
- 960468
- Canonical record hash
sha256:9bb379efa8b85ffd3365b221cd9940b7b47729ec37c1665f8536a4b4afd57f0f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF055900265
- Bitcoin block existence check
- https://blockstream.info/api/block/960468
Full record
Track page: String Quartet No. 8 in E Minor, Op. 59 No. 2: III. Allegretto · Machine-readable JSON-LD