ISRC DEUF81807703
Verified recording
DEUF81807703 is “Cloudy Day” by Thomas Katzmarzik,
registered on the CopyrightChains blockchain with CopyrightID
0xe6daa49edf2c5e53dc9c7ba8862cb830708ab1141781ea27561eddc96eb47a62 and independently timestamped
in Bitcoin block 960473 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUF81807703.
Recording identifiers
- ISRC
- DEUF81807703
- Title
- Cloudy Day
- Artist
- Thomas Katzmarzik
- CopyrightID (CopyrightChains transaction hash)
0xe6daa49edf2c5e53dc9c7ba8862cb830708ab1141781ea27561eddc96eb47a62
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T22:27:44+00:00
- Bitcoin block
- 960473
- Canonical record hash
sha256:ae5a46325346b88f556ea5d6e74cda0c411528ee878e3b5c2c897256b5e0e176- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUF81807703
- Bitcoin block existence check
- https://blockstream.info/api/block/960473