ISRC CA5KR1831748
Verified recording
CA5KR1831748 is “Big Mac” by Subject 31,
registered on the CopyrightChains blockchain with CopyrightID
0x28e3d9b97b42262f1701b0085ea4bbbcd59aec7fd08bbb36dfb049fc052bd98a and independently timestamped
in Bitcoin block 957120 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1831748.
Recording identifiers
- ISRC
- CA5KR1831748
- Title
- Big Mac
- Artist
- Subject 31
- CopyrightID (CopyrightChains transaction hash)
0x28e3d9b97b42262f1701b0085ea4bbbcd59aec7fd08bbb36dfb049fc052bd98a
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:22:41+00:00
- Bitcoin block
- 957120
- Canonical record hash
sha256:f12e0c356b700f79fda0b623aa830b5dc341ae62a31d1f26b58785ba791a66ce- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1831748
- Bitcoin block existence check
- https://blockstream.info/api/block/957120