Mark Alexander Ballas Jr. (born May 24, 1986) is an American professional Latin and ballroom dancer, choreographer, musician, and actor. Since 2007, he has appeared as a pro on the ABC reality competi
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec317cb9846e8a9d8b13b4a57478e50b4b772d73f5ea2094bb8ccb7df4526cde. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/210a6520-4f8a-4d16-8425-dc65017872b5.json and https://artists.proofprofile.net/proofs/artist/210a6520-4f8a-4d16-8425-dc65017872b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).