ISRC US4KV1000005
Verified recording
US4KV1000005 is “Duck” by E-40,
registered on the CopyrightChains blockchain with CopyrightID
0x3557b6452e5cad2b8aa1643d62a31ad94b4b69e0eea31f797d9779a398afc1be and independently timestamped
in Bitcoin block 956304 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4KV1000005.
Recording identifiers
- ISRC
- US4KV1000005
- Title
- Duck
- Artist
- E-40
- CopyrightID (CopyrightChains transaction hash)
0x3557b6452e5cad2b8aa1643d62a31ad94b4b69e0eea31f797d9779a398afc1be
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:50b1ce818a2deb821ea7ef4877e6acd639cd271709b50d2e11560e57e93cd04e- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4KV1000005
- Bitcoin block existence check
- https://blockstream.info/api/block/956304