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 0x3c84c8c4a2fb48300f35d8a4c45f89e6b66b4cf97ae3c5df10d33646665dca88. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6243b98-d6b1-4a73-bd32-0f9bfd3612e7.json and https://artists.proofprofile.net/proofs/artist/f6243b98-d6b1-4a73-bd32-0f9bfd3612e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xeb4cc89a2e6d672bb678a254c16638f113bef263ce103cf027ed6fe3d1631eeb. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GX5MY2226030.
BIG SHOT (DELTARUNE Chapter 2 Original Game Soundtrack)
Crossover Collection 1 (Danganronpa, Ace Attorney, Persona)
Phoenix Wright x Ryunosuke Naruhodo Orchestral Arrangements
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7a09802b41609462b70e98949fb8c688ea904b7fed130f69ca9b63e5e1d87d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX5MY2213363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706e66b55f81709cca55b6f9159fe0c5542a9821ad9b3ac866c17b23e6ede865. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX5MY2213433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45337d3938454b8976985fb582e638375d457531df647f8e56483480c088ed33. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX5MY2204515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc31af04c91b7a69f95bf64e773951a72376ec201df82d8a9088fd98cc0fee7. 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/GX5MY2204524.
Project: Eden's Garden - Prologue Trailer Theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6a1d1cf4b6b873d7abf10edb8bb14018e878b16db780d11f918fa73efa3703. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GX8LE2416201.
Ghost Trick: Phantom Detective Main Theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f409f359786df7da6d8eceef2dbc4719d5539c69fdf929d88df3b8b17ca0c37. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX8LD2523048.
Keter / Canto I Battle Theme A1 (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac8595da1647c235da14b26aac21294e14317d5b5fa242d57205c628a9fdcee. 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/GXF972486959.