ISRC DEU921368028
Verified recording
DEU921368028 is “Est-ce Mars, SwWV 321: Variation 4” by Jan Pieterszoon Sweelinck,
registered on the CopyrightChains blockchain with CopyrightID
0x6820bf7ed112f94033d1c18d9af6d7c9ace4e45a1e4a251004bc5ded4f5e1f82 and independently timestamped
in Bitcoin block 960441 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921368028.
Recording identifiers
- ISRC
- DEU921368028
- Title
- Est-ce Mars, SwWV 321: Variation 4
- Artist
- Jan Pieterszoon Sweelinck
- CopyrightID (CopyrightChains transaction hash)
0x6820bf7ed112f94033d1c18d9af6d7c9ace4e45a1e4a251004bc5ded4f5e1f82
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T17:29:52+00:00
- Bitcoin block
- 960441
- Canonical record hash
sha256:27d34fd45841afd798f414a973169de8cfc2bf994f59a4211bf26d68589dc28a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU921368028
- Bitcoin block existence check
- https://blockstream.info/api/block/960441
Full record
Track page: Est-ce Mars, SwWV 321: Variation 4 · Machine-readable JSON-LD