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 0xc4d03289c3c83670a0859144ef9b724d09b3ac3fbd95d6ef510a9f2d506181bc. 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/4f4d85be-5d0f-4b22-8c12-dc57c12be44e.json and https://artists.proofprofile.net/proofs/artist/4f4d85be-5d0f-4b22-8c12-dc57c12be44e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Heidi - Sincap Kardeşler Masal Dizisi, Vol. 2
Pinokyo - Sincap Kardeş Masal Dizisi, Vol. 1
Don Kişot - Sincap Kardeş Masal Dizisi, Vol. 3
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 0x6347c9c179eff75d3e934569ed63e10ffac62ddfef3fc3de723851cd0111f90f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TR0281405170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40a450ca66273bd91fef836168c22baca542e64e7aef285d8455b4a9643e45e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TR0280601939.
Küçük Kara Balık - Sincap Kardeş Masal Dizisi, Vol. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa14f6539c57ea51073e2e4cbf737a125d8251b1c64f8248f293b6c5dd02126. 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/TR0280601947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c01d4fa4f7d3b5dd8f9220f834910f8e035d0506cfc0fd3aae0d41ba88b513. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:13:08Z), 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/TR0281304849.