ISRC NOFZS0965050
Verified recording
NOFZS0965050 is “String Quartet No. 13 In B Flat Major, Op. 130: V. Cavatina: Adagio Molto Espressivo” by Ludwig van Beethoven,
registered on the CopyrightChains blockchain with CopyrightID
0x0b30a807a8f948e451c37bf79ac48c6c0da2aaf4819a4394a753092a56872eb9 and independently timestamped
in Bitcoin block 960463 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFZS0965050.
Recording identifiers
- ISRC
- NOFZS0965050
- Title
- String Quartet No. 13 In B Flat Major, Op. 130: V. Cavatina: Adagio Molto Espressivo
- Artist
- Ludwig van Beethoven
- CopyrightID (CopyrightChains transaction hash)
0x0b30a807a8f948e451c37bf79ac48c6c0da2aaf4819a4394a753092a56872eb9
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T20:42:35+00:00
- Bitcoin block
- 960463
- Canonical record hash
sha256:26368acfb41630ea9790281f77cae9d4db33f039c3a2dddb9ca48dca1df6f63b- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOFZS0965050
- Bitcoin block existence check
- https://blockstream.info/api/block/960463
Full record
Track page: String Quartet No. 13 In B Flat Major, Op. 130: V. Cavatina: Adagio Molto Espressivo · Machine-readable JSON-LD