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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc5a5757a0a05bfd81a0e9f4badc0d16db9b8d786f054424d18b7da19f12e88. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d03ee0e1-6ad2-4a12-ad7a-c5535ec0e456.json and https://artists.proofprofile.net/proofs/artist/d03ee0e1-6ad2-4a12-ad7a-c5535ec0e456.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Resurrection of the Night: Alucard's Elegy (Music from "Castlevania: Symphony of the Night")
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8422d4ec0e3e055d43ffc90c4754f70c637f9f632ae0dfde6648db290961d3. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QZ6K41900183.
The Great Sea (From "The Legend of Zelda: The Wind Waker")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6eb4daea15ce2cf9aef91769250384bbbd5f239323745cddcdd7b172402969. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZPJ32203798.
Barok van Zieks - The Reaper of the Bailey
Barok van Zieks ~ The Reaper of the Bailey (from "The Great Ace Attorney")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118eab5069c78bc8e07752fd4bd89788f02f47045bfc250e2c76aa856f6d9aac. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ6K42200425.
Pursuit ~ A Great Turnabout (from "The Great Ace Attorney")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605d4da554b85100b0550c334f79df892a2d4ac2931ec8e0f108054c1dfa155b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ6K42200430.
Herlock Sholmes - Great Detective of Foggy London Town
Objection! ~ Greatest Hits of the Great Ace Attorney
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca07340335864a9655cd99bc9cf149c10288e6672152d25ac86a9b42514fcb0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZ6K42200428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118eab5069c78bc8e07752fd4bd89788f02f47045bfc250e2c76aa856f6d9aac. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZ6K42200425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605d4da554b85100b0550c334f79df892a2d4ac2931ec8e0f108054c1dfa155b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZ6K42200430.