ISRC NLA508721505
Verified recording
NLA508721505 is “Sonata (Duo) for Bassoon and Cello in B-Flat Major, K. 292 (Attrib. Doubtful): II. Andante” by Wolfgang Amadeus Mozart,
registered on the CopyrightChains blockchain with CopyrightID
0x8f4e89f3458cbbcd7a172617e3c799657ef0b05afcf036f1c317ade902749fc9 and independently timestamped
in Bitcoin block 957067 on 2026-07-07.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508721505.
Recording identifiers
- ISRC
- NLA508721505
- Title
- Sonata (Duo) for Bassoon and Cello in B-Flat Major, K. 292 (Attrib. Doubtful): II. Andante
- Artist
- Wolfgang Amadeus Mozart
- CopyrightID (CopyrightChains transaction hash)
0x8f4e89f3458cbbcd7a172617e3c799657ef0b05afcf036f1c317ade902749fc9
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-07T16:54:37+00:00
- Bitcoin block
- 957067
- Canonical record hash
sha256:4b4cf34144f882dbfdeb5fdd8512406c4fd2739ca06c1913dc0b6e26d6fb4dc4- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508721505
- Bitcoin block existence check
- https://blockstream.info/api/block/957067
Full record
Track page: Sonata (Duo) for Bassoon and Cello in B-Flat Major, K. 292 (Attrib. Doubtful): II. Andante · Machine-readable JSON-LD