ISRC DEF059002581
Verified recording
DEF059002581 is “Waltz No. 9 In A-Flat Major, Op. 69 No. 1 "Farewell"” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x0bfada5631c3a5b2338f5e44482e20a3c2225742052be7c09ccb9f34b110ca02 and independently timestamped
in Bitcoin block 956889 on 2026-07-06.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059002581.
Recording identifiers
- ISRC
- DEF059002581
- Title
- Waltz No. 9 In A-Flat Major, Op. 69 No. 1 "Farewell"
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x0bfada5631c3a5b2338f5e44482e20a3c2225742052be7c09ccb9f34b110ca02
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-06T06:56:49+00:00
- Bitcoin block
- 956889
- Canonical record hash
sha256:07dac8819c793b13d669e08528d9b0d53c6f40ac84073dd091db368eecf085ae- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059002581
- Bitcoin block existence check
- https://blockstream.info/api/block/956889
Full record
Track page: Waltz No. 9 In A-Flat Major, Op. 69 No. 1 "Farewell" · Machine-readable JSON-LD