ISRC DEF059404991
Verified recording
DEF059404991 is “String Quartet No. 15 in A Minor, Op. 132: I. Assai sostenuto - Allegro” by Ludwig van Beethoven,
registered on the CopyrightChains blockchain with CopyrightID
0x7b23c0226f403b56082a2988436fb239d77da0b6c10923b93ad82673e7ae4951 and independently timestamped
in Bitcoin block 960220 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059404991.
Recording identifiers
- ISRC
- DEF059404991
- Title
- String Quartet No. 15 in A Minor, Op. 132: I. Assai sostenuto - Allegro
- Artist
- Ludwig van Beethoven
- CopyrightID (CopyrightChains transaction hash)
0x7b23c0226f403b56082a2988436fb239d77da0b6c10923b93ad82673e7ae4951
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T07:28:30+00:00
- Bitcoin block
- 960220
- Canonical record hash
sha256:e0b55a2e78f232e6d1b61e440176d92892c03990de5ac32ebdb5c917ecca3751- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059404991
- Bitcoin block existence check
- https://blockstream.info/api/block/960220
Full record
Track page: String Quartet No. 15 in A Minor, Op. 132: I. Assai sostenuto - Allegro · Machine-readable JSON-LD