ISRC QMZ621402860
Verified recording
QMZ621402860 is “Bardenklänge, Op. 13: Polonaise No. 6” by Johann Kaspar Mertz,
registered on the CopyrightChains blockchain with CopyrightID
0x7b5e682332e17da3dfc4ca397821cd2aa48410e701743cd7ef31e485157aa798 and independently timestamped
in Bitcoin block 960500 on 2026-08-01.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMZ621402860.
Recording identifiers
- ISRC
- QMZ621402860
- Title
- Bardenklänge, Op. 13: Polonaise No. 6
- Artist
- Johann Kaspar Mertz
- CopyrightID (CopyrightChains transaction hash)
0x7b5e682332e17da3dfc4ca397821cd2aa48410e701743cd7ef31e485157aa798
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-08-01T03:13:03+00:00
- Bitcoin block
- 960500
- Canonical record hash
sha256:6ba1d16a8d3671d38fbfcbd08123846b89a1979c4cb40088322bcb78f17a623a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMZ621402860
- Bitcoin block existence check
- https://blockstream.info/api/block/960500
Full record
Track page: Bardenklänge, Op. 13: Polonaise No. 6 · Machine-readable JSON-LD