ISRC DEF059404924
Verified recording
DEF059404924 is “String Quartet No. 6 in B-Flat Major, Op. 18 No. 6: 4. La Malinconia. Adagio - Allegretto quasi allegro - Adagio - Allegretto - Poco adagio - Prestissimo” by Ludwig van Beethoven,
registered on the CopyrightChains blockchain with CopyrightID
0xe18c31a32ba32230cc82511eaf5a48862fdbcc4cefc998884211b9d9a6bb825f and independently timestamped
in Bitcoin block 956302 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059404924.
Recording identifiers
- ISRC
- DEF059404924
- Title
- String Quartet No. 6 in B-Flat Major, Op. 18 No. 6: 4. La Malinconia. Adagio - Allegretto quasi allegro - Adagio - Allegretto - Poco adagio - Prestissimo
- Artist
- Ludwig van Beethoven
- CopyrightID (CopyrightChains transaction hash)
0xe18c31a32ba32230cc82511eaf5a48862fdbcc4cefc998884211b9d9a6bb825f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:30:09+00:00
- Bitcoin block
- 956302
- Canonical record hash
sha256:77e328954109bdc9689b96301b5c38bb072932b8cd758fe4cb4ee511ad6fdc8b- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059404924
- Bitcoin block existence check
- https://blockstream.info/api/block/956302
Full record
Track page: String Quartet No. 6 in B-Flat Major, Op. 18 No. 6: 4. La Malinconia. Adagio - Allegretto quasi allegro - Adagio - Allegretto - Poco adagio - Prestissimo · Machine-readable JSON-LD