ISRC DEF056500780
Verified recording
DEF056500780 is “Waltz No. 9 in A-Flat Major, Op. 69 No. 1 "Farewell": Tempo di Valse” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x7ac3bd7c3d6046ea9577f12c67cfb14fc9d53a714ab8209fb3f1f9361be4da58 and independently timestamped
in Bitcoin block 960222 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056500780.
Recording identifiers
- ISRC
- DEF056500780
- Title
- Waltz No. 9 in A-Flat Major, Op. 69 No. 1 "Farewell": Tempo di Valse
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x7ac3bd7c3d6046ea9577f12c67cfb14fc9d53a714ab8209fb3f1f9361be4da58
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T07:48:45+00:00
- Bitcoin block
- 960222
- Canonical record hash
sha256:7b1bf4294b44cab6a05b31d535c64b45c9fe7a0a9b96af356b46c465d79d6a56- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056500780
- Bitcoin block existence check
- https://blockstream.info/api/block/960222
Full record
Track page: Waltz No. 9 in A-Flat Major, Op. 69 No. 1 "Farewell": Tempo di Valse · Machine-readable JSON-LD