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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ca8b2f422bc39f3e6facd17a7d7a30e1d0c28520887bba418256ecbef5623c. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6e0343f-45c3-4cd3-ada1-37a0758008c0.json and https://artists.proofprofile.net/proofs/artist/d6e0343f-45c3-4cd3-ada1-37a0758008c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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Crawling in the Dark - A Tribute to Hoobastank
Songs About Rain - A Tribute to Gary Allan
Dance Floor Anthem - A Tribute to Good Charlotte
Love & Marriage - A Tribute to Frank Sinatra
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Workin' For a Livin' - A Tribute to Garth Brooks
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