ISRC DEF059404952
Verified recording
DEF059404952 is “String Quartet No. 9 in C Major, Op. 59, No. 3 "Rasumovsky": II. Andante con moto quasi allegretto” by Ludwig van Beethoven,
registered on the CopyrightChains blockchain with CopyrightID
0x8ef716d215303e570a31adc2a29f87d21ee00029337da61f67246974a5f6675b 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/DEF059404952.
Recording identifiers
- ISRC
- DEF059404952
- Title
- String Quartet No. 9 in C Major, Op. 59, No. 3 "Rasumovsky": II. Andante con moto quasi allegretto
- Artist
- Ludwig van Beethoven
- CopyrightID (CopyrightChains transaction hash)
0x8ef716d215303e570a31adc2a29f87d21ee00029337da61f67246974a5f6675b
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:32e04c3d9830f767b2b633a7ce1d6cb4ba86f3466c46738fed36fef0f7e1771a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059404952
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: String Quartet No. 9 in C Major, Op. 59, No. 3 "Rasumovsky": II. Andante con moto quasi allegretto · Machine-readable JSON-LD