ISRC CH6540841853
Verified recording
CH6540841853 is “Mack the Knife” by Kurt Weill,
registered on the CopyrightChains blockchain with CopyrightID
0xf81ffbf614f5460a3ed7d9c1d2d1472c565df8381919b4b9d76eef942b1de863 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/CH6540841853.
Recording identifiers
- ISRC
- CH6540841853
- Title
- Mack the Knife
- Artist
- Kurt Weill
- CopyrightID (CopyrightChains transaction hash)
0xf81ffbf614f5460a3ed7d9c1d2d1472c565df8381919b4b9d76eef942b1de863
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:7482d7e07014fa22fb498d7cb503e77208740cc524a60e12706aa7aad3cf3da3- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6540841853
- Bitcoin block existence check
- https://blockstream.info/api/block/957118