Holla may refer to: Places Holla, Telemark, a former municipality in Telemark county, Norway Holla, Trøndelag, a village in Hemne municipality in Trøndelag county, Norway Music "Holla", a song
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 0x31594faa3eead6bc7e0d79a2b7563e9f567435a710eccd2b2889c59e0122f35e. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49812775-34b2-478d-8c15-2ba56c507531.json and https://artists.proofprofile.net/proofs/artist/49812775-34b2-478d-8c15-2ba56c507531.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).