ISRC USUPK1521701
Verified recording
USUPK1521701 is “Underground Legend (feat. Madchild)” by CRUCIFIX,
registered on the CopyrightChains blockchain with CopyrightID
0x0e11a83b1c4086668fc2079105558a1dce3a0c513883910e288928d363582049 and independently timestamped
in Bitcoin block 953520 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUPK1521701.
Recording identifiers
- ISRC
- USUPK1521701
- Title
- Underground Legend (feat. Madchild)
- Artist
- CRUCIFIX
- CopyrightID (CopyrightChains transaction hash)
0x0e11a83b1c4086668fc2079105558a1dce3a0c513883910e288928d363582049
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09+00:00
- Bitcoin block
- 953520
- Canonical record hash
sha256:521f9bdfe5aa7bd8e66bf692acef5436e09b954c7f5bef47a61db0fdacf02a42- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUPK1521701
- Bitcoin block existence check
- https://blockstream.info/api/block/953520
Full record
Track page: Underground Legend (feat. Madchild) · Machine-readable JSON-LD