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 0x0e8cdb26246d05fd26094e79b431cbfbde2682baa63d49ffb7ce1778c0f86539. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4aa37ddd-45d1-41e1-8542-855a310cb53a.json and https://artists.proofprofile.net/proofs/artist/4aa37ddd-45d1-41e1-8542-855a310cb53a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O.T.I.S. (Original Turkish Infamous Superstar)
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 0xde8075e33570095346a317ed908d5c877d688938114cb2d3d7ad97ea9c840729. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DETR51900183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32cc83bb1d04c966c5c4d211fc0eea644eadd41628dfa73c24c659db3cd1d19. 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/DETR51900184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864010c867bf68a30d4d43138595e9e4b2dabc1c26e61bdaccd78f6a2d8a5403. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/DETR51900187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b5a35fa99f9d276f574c77c13f95866b76a6dacdf793d080a82ff201648b44. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/DETR51900188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94f22381d315c431f871c188fab5b2bf7431cb344ebf919c05227b28c1f1fc6. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEDG61700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a82315ee3ff9268fb7f6e1deb985e15409b2fbe8cd85ae91fbcc19c9fd4a6a. 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/DEDG61700108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b882cb5ed84469a698a57f73f8a29b8ae30724543ee62071c5cea89ec44ebd. 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/DEDG61400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32cc83bb1d04c966c5c4d211fc0eea644eadd41628dfa73c24c659db3cd1d19. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DETR51900184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc138a845c9f240f4b105c9deefe13a39945db62eead61d3a445fc6c049dc58be. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DETR51900191.