ISRC DEF059031931
Verified recording
DEF059031931 is “Waltz No. 9 in A-Flat Major, Op. 69 No. 1 "Farewell" - Pt. 1” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xda6e8d96967e73daeaf754551f5b98c0092e19a797f11accaf447710e69ee167 and independently timestamped
in Bitcoin block 960163 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059031931.
Recording identifiers
- ISRC
- DEF059031931
- Title
- Waltz No. 9 in A-Flat Major, Op. 69 No. 1 "Farewell" - Pt. 1
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xda6e8d96967e73daeaf754551f5b98c0092e19a797f11accaf447710e69ee167
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T23:20:38+00:00
- Bitcoin block
- 960163
- Canonical record hash
sha256:b7ddaaa2b8f9ad8009090c5e3357e9bbffb2fe6fe90d557c6e5a93b1334b52b8- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059031931
- Bitcoin block existence check
- https://blockstream.info/api/block/960163
Full record
Track page: Waltz No. 9 in A-Flat Major, Op. 69 No. 1 "Farewell" - Pt. 1 · Machine-readable JSON-LD