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 0xd1f236ce51ce07f4dc88ca92c3e232cbfcd4f27f4322f9f6e05120cdfd9fd96e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65680f92-6ef7-4fc3-bce1-d3be9cf81c47.json and https://artists.proofprofile.net/proofs/artist/65680f92-6ef7-4fc3-bce1-d3be9cf81c47.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9725d8bca0965468c7b31d186100ece4c219d5c8618ad97e45e97549588d11b. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/FR96X1522254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c3625e4da2ce3d808f7f4bd1ff4f80b1b3733dc23b309c3f778c74d55e98bc. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/ITR631900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0a5c48bda55c2e80554dd686b39098d311cc96c1ec6a4feecaa3badc87223c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ITR632000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d750afbd302f8c2efd4b02f3feaedbe4785335741cd25762c17545517fdcad. 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/ITR632100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f27d8b2e68d8d450239ee9e93880c99e724b77db88d27877272bfd3879880b3. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ITR632100249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea661800eaee597d15eaed83c526987b2c1a0dfeebdee1baa44db8abbe2b5ae. 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/ITR632100536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cbd9d6db61044dea520153d7ffa51a617c5ef443bec171667a2cfd5c73aed1. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ITR632300518.
Tu Me Cagnat A Vita / Falla Sta Pazzia / Na Telefonata / O Sole E A Luna / Carezze E Ammore / Chianu Chiane / Che Me Fatt / Vivo Sul E Te / Vene Primm'E Te / Pe A Velocità
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2640bc314939fa1a34335c5db024017310c0d7cfa1976c37569f685bfd473039. 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/ITR632300856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6e6fb29f8d4c8b8d7adb917f75316d11ecfbad856848a311f4dfc12a509e09. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ITR632401043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a7f3f8f3ddae1c4afbda8a994aec464389bd02268e499aec881e60aa7d325c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITR632400360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945c2483e6e93730e8ba708140f2011134e910a28267bfa58a73c2686a8e6467. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/ITR632500487.