ISRC QM4TW1558467
Verified recording
QM4TW1558467 is “21 Études for Solo Cello: No. 8 in D Major - Adagio cantabile” by Jean Pierre Duport,
registered on the CopyrightChains blockchain with CopyrightID
0xee2b4025c615e11706de07b9bc2f8ae65327fc6939678d46da5833b888da0464 and independently timestamped
in Bitcoin block 960273 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1558467.
Recording identifiers
- ISRC
- QM4TW1558467
- Title
- 21 Études for Solo Cello: No. 8 in D Major - Adagio cantabile
- Artist
- Jean Pierre Duport
- CopyrightID (CopyrightChains transaction hash)
0xee2b4025c615e11706de07b9bc2f8ae65327fc6939678d46da5833b888da0464
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T15:42:38+00:00
- Bitcoin block
- 960273
- Canonical record hash
sha256:16961f35e9049645f315cfeb9faf68d7ed3073bda8e0f105b24af3df79c3c62c- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1558467
- Bitcoin block existence check
- https://blockstream.info/api/block/960273
Full record
Track page: 21 Études for Solo Cello: No. 8 in D Major - Adagio cantabile · Machine-readable JSON-LD