ISRC NLE421903804
Verified recording
NLE421903804 is “String Quartet No. 13 in B-Flat Major, Op. 130: V. Cavatina. Adagio molto espressivo (Transcr. M. Balakirev for Piano)” by Ludwig van Beethoven,
registered on the CopyrightChains blockchain with CopyrightID
0xf2c489efd1e61dbf619d2d19422f40effccee85a7f069f9f472debbf447752c1 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/NLE421903804.
Recording identifiers
- ISRC
- NLE421903804
- Title
- String Quartet No. 13 in B-Flat Major, Op. 130: V. Cavatina. Adagio molto espressivo (Transcr. M. Balakirev for Piano)
- Artist
- Ludwig van Beethoven
- CopyrightID (CopyrightChains transaction hash)
0xf2c489efd1e61dbf619d2d19422f40effccee85a7f069f9f472debbf447752c1
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:30:09+00:00
- Bitcoin block
- 956302
- Canonical record hash
sha256:1fd85bd4cfbc1a223c8e97647e14c7434d44af76106778733b8e0422d3822b43- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE421903804
- Bitcoin block existence check
- https://blockstream.info/api/block/956302
Full record
Track page: String Quartet No. 13 in B-Flat Major, Op. 130: V. Cavatina. Adagio molto espressivo (Transcr. M. Balakirev for Piano) · Machine-readable JSON-LD