ISRC US4KV1200039
Verified recording
US4KV1200039 is “Function (feat. YG, IAMSU! & Problem)” by E-40,
registered on the CopyrightChains blockchain with CopyrightID
0x9800afceae1471df28c6fbd1b9a9113a5257f5f8fe23a26e9a1fd45e9c3d3d5d and independently timestamped
in Bitcoin block 953513 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4KV1200039.
Recording identifiers
- ISRC
- US4KV1200039
- Title
- Function (feat. YG, IAMSU! & Problem)
- Artist
- E-40
- CopyrightID (CopyrightChains transaction hash)
0x9800afceae1471df28c6fbd1b9a9113a5257f5f8fe23a26e9a1fd45e9c3d3d5d
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T12:47:07+00:00
- Bitcoin block
- 953513
- Canonical record hash
sha256:7f05bef8c4ab662944449dc4c3f07e21ac84dec4658c1ef834e78a27b9b984fa- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4KV1200039
- Bitcoin block existence check
- https://blockstream.info/api/block/953513
Full record
Track page: Function (feat. YG, IAMSU! & Problem) · Machine-readable JSON-LD