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 0x3c4f805eb11a3bd5c6ca91869b2cac35d9689500feacfb3bcc60b70352149298. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d51b1a32-9930-4db1-972f-b7ff144a933e.json and https://artists.proofprofile.net/proofs/artist/d51b1a32-9930-4db1-972f-b7ff144a933e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Heavenly Harp Sounds: Classical Music, The Ultimate Collection
Relax After Work - Classical Music to Deep Relaxation, Soothing Sounds to Calm Down
The Einstein Effect: Classical Music for Babies - Get Smarter with Beethoven, Brahms and Mozart, Easy Listen & Learn, Build Your Baby IQ, Music for Babies Development
9 Different Types of Harp (Instrumental Music)