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 0x6c3f94905b72d4e9855b549b1d88c3696b1b1f2c8d6a0fd8805666f7a525361c. 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/a10979a0-4ed6-4417-8926-68dee3de3d16.json and https://artists.proofprofile.net/proofs/artist/a10979a0-4ed6-4417-8926-68dee3de3d16.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Doors (Original Game Soundtrack), Vol. 1
Doors (Original Game Soundtrack), Vol. 2
RAGDOLL UNIVERSE (Original Game Soundtrack), Vol. 1
Doors (Original Game Soundtrack), Vol. 3
Doors (Original Game Soundtrack), Vol. 4
Doors (Original Game Soundtrack), Vol. 5
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 0x6a867a6985ec25115a00e82a2caed43739ba25d068c5ade7d74dcf14fa4c6efe. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QT3F22500275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc059bab20972800d5289a0c2b76a1ef2523e9babe3567cb356c4dea7d186ddde. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:58:34Z), 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/QT3F22500277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0757acf35e0aeb5c2c2e715a01d617289958facf5b552d6d002bbba5df806d3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT3F22500279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0250b46b2603de7173b4b40490ece9509511f29e9277fb38b3478f44dff01024. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:37:13Z), 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/QT3F22500280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efee9d4de4a4801fd16003cdc7f41275de774b0ba8ebe7ce92d7ff1307e2b5d. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QT3F22500281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eea4318e77241fff067c936b0656ccfd8381f37664ec44e05865b13f7b4ff91. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3F22500282.