ISRC DEF059031934
Verified recording
DEF059031934 is “Waltz No. 9 in A-Flat Major, Op. 69 No. 1 "Farewell" - Pt. 4” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x9b9e1ffdab345387a0a911475b37b5e51a38c6940b026cf2024732eeaf3d1f35 and independently timestamped
in Bitcoin block 960291 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059031934.
Recording identifiers
- ISRC
- DEF059031934
- Title
- Waltz No. 9 in A-Flat Major, Op. 69 No. 1 "Farewell" - Pt. 4
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x9b9e1ffdab345387a0a911475b37b5e51a38c6940b026cf2024732eeaf3d1f35
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T18:23:33+00:00
- Bitcoin block
- 960291
- Canonical record hash
sha256:7d012bad69b9c2e0a3af230e4628475bbaf4a628a169809154291de39c71d077- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059031934
- Bitcoin block existence check
- https://blockstream.info/api/block/960291
Full record
Track page: Waltz No. 9 in A-Flat Major, Op. 69 No. 1 "Farewell" - Pt. 4 · Machine-readable JSON-LD