ISRC USUM70621219
Verified recording
USUM70621219 is “Hold Down The Block” by Nas,
registered on the CopyrightChains blockchain with CopyrightID
0xb20683ee099bac7c89769174257efbffe3ffa5f5064b49d31f6e20de5a4bcf7a 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/USUM70621219.
Recording identifiers
- ISRC
- USUM70621219
- Title
- Hold Down The Block
- Artist
- Nas
- CopyrightID (CopyrightChains transaction hash)
0xb20683ee099bac7c89769174257efbffe3ffa5f5064b49d31f6e20de5a4bcf7a
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T12:47:07+00:00
- Bitcoin block
- 953513
- Canonical record hash
sha256:5309e55e3b61ad220dc225fa0503355d099304451610c8deec56c6051d9d87c6- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM70621219
- Bitcoin block existence check
- https://blockstream.info/api/block/953513