ISRC DEF059202121
Verified recording
DEF059202121 is “Serenade for String Orchestra, Op. 48: II. Valse. Moderato. Tempo di valse” by Pyotr Ilyich Tchaikovsky,
registered on the CopyrightChains blockchain with CopyrightID
0xc72af8909d16055ede6847afd3eec9b1379f7f5deb86be841a8d1e7e7b0d8534 and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059202121.
Recording identifiers
- ISRC
- DEF059202121
- Title
- Serenade for String Orchestra, Op. 48: II. Valse. Moderato. Tempo di valse
- Artist
- Pyotr Ilyich Tchaikovsky
- CopyrightID (CopyrightChains transaction hash)
0xc72af8909d16055ede6847afd3eec9b1379f7f5deb86be841a8d1e7e7b0d8534
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:265e56950efd153e6e40b124a3382c0aba2dd9ea84b41056a0794ce1bcf7aaa2- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059202121
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Serenade for String Orchestra, Op. 48: II. Valse. Moderato. Tempo di valse · Machine-readable JSON-LD