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 0xa0f5335c6fff0d4f22fcc004fdf19bce7b094325b5096ad25f3a0d3efc7ce918. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ccfbe3b-8407-4470-ab2b-1794ada0715f.json and https://artists.proofprofile.net/proofs/artist/7ccfbe3b-8407-4470-ab2b-1794ada0715f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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Naturescapes for Relaxing Sleep: Close Your Eyes and Chill, Nature Sounds with Instrumental Background
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Nighttime Rain: Chill Thunder for Deep Sleep
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