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 0x05f8a11edf35e1b2f64a0173b6deac86c7943047c63cf24de6ec90f167479d39. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f15cd8cc-0350-4401-8eb1-c2324df29c67.json and https://artists.proofprofile.net/proofs/artist/f15cd8cc-0350-4401-8eb1-c2324df29c67.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Universe Revolving: Jevil's Theme (From "Deltarune")
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 0x66d29492e12b30264e198efca9f406a216e9ef6029a583a794c6537c7e3384d9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZ22B2032896.
Field of Hopes and Dreams (From "Deltarune") [Metal Remix]
Apex Legends (From "Apex Legends") [Metal Version]
Moon Theme (From "Ducktales") [Metal Cover]
Halo Theme (From "Halo") [Metal Version]
The Man With The Machine Gun (From "Final Fantasy VIII") [Metal Cover]
Boomer Kuwanger (From "Mega Man X") [Metal Cover]
Still More Fighting (From "Final Fantasy 7") [Metal Version]
Gang-Plank Galleon (From "Donkey Kong Country")
Final Fantasy Mystic Quest: Remastered Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c40598636f8f8a0f107e3782bfc228be2fde5b1aec2ea09004bb9e86add17c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ22B2005441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34889fe5dfff556d57dd08ff2fb888c34be55858c17e2601d59422227e4795f2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ22B2005445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483ce99f9aadcbe5eff049b11b0a9953be7617b53814419eec4f25e34d48b1c8. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZ22B2005454.
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 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