ISRC DEF059504854
Verified recording
DEF059504854 is “String Quartet No. 10 in E Flat Major, Op. 74 "Harp": IV. Allegretto con variazioni” by Ludwig van Beethoven,
registered on the CopyrightChains blockchain with CopyrightID
0x737e956cb86987348159534a26a922fe20352b3424311135a7680237bbc64e19 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/DEF059504854.
Recording identifiers
- ISRC
- DEF059504854
- Title
- String Quartet No. 10 in E Flat Major, Op. 74 "Harp": IV. Allegretto con variazioni
- Artist
- Ludwig van Beethoven
- CopyrightID (CopyrightChains transaction hash)
0x737e956cb86987348159534a26a922fe20352b3424311135a7680237bbc64e19
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:7a46019c1a9ee6c855426fdcebecd3df3af117d3450c65750af01f530919f646- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059504854
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: String Quartet No. 10 in E Flat Major, Op. 74 "Harp": IV. Allegretto con variazioni · Machine-readable JSON-LD