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 0xd408c6e14182f1a2bb2f6caaa5feb49152f7b675395eaad72efb9b12c690e05d. 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/795b89a1-a042-4d6b-a837-0a0e2cba2758.json and https://artists.proofprofile.net/proofs/artist/795b89a1-a042-4d6b-a837-0a0e2cba2758.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
toss a coin to your witcher (from "the witcher") ~ lofi
her sweet kiss (from "the witcher") ~ lofi
her sweet kiss (from "the witcher") [lofi]
Main Theme (From "Star Wars") [Lofi Version]
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e82af18d44d2e082063084cbcd1b08f0340337235d3f4b957d6c4fa4bd03fe1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32165653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f05138313a6bafb67e26350d2f9850822884f489ae57aa9f1a24637b4a67e57. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32165555.
Dream a Little Dream of Me (Lofi Version)
Sumeru: Girdle of the Sands Piano Covers (From the Genshin Impact)