1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9835f490582d08857c8d6c4f6204d7ca1ffca948532da2e9d6db2f58b37532a0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bc7e045-1821-40d6-a4b2-a8de07debb16.json and https://artists.proofprofile.net/proofs/artist/0bc7e045-1821-40d6-a4b2-a8de07debb16.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Old Up (feat. Bosh, Elams, Riane, Zeguerre, Dabs, Krilino, Douma Kalash, Dibson, Leto, Grizzly942, Brvmsoo & Yaro)
Old Up 2 (feat. Moro, Zeroten, Triuu, DH, West, Tflow, Demon, Mesteralae, Dini, Crazy Man & Snaik)
Old Up 3 (feat. Popey, Keylargo, Dika, ISK, COR, Cheu-B, Moha K, Kazmi, Decimo, SLK, NKD, BKL & RBK)
Old Up 4 (feat. Div, Shotas, L’allemand, Kepler, Rémy, Cinco, MehdiYz, Noname, Kingzer , Skg)