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 0x54147ddd94fc000654c1394d0cb475d9a05dfdf0d8982fd3009ea6aad029eb19. 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/7bbb8a22-65ca-44da-9e79-9ad6124db979.json and https://artists.proofprofile.net/proofs/artist/7bbb8a22-65ca-44da-9e79-9ad6124db979.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 0x231399fb6e49a262099855822c990117052e628c4210c41a96a4881cb589621c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USDHM1915804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890910aeb7e7d1fc9d29b8a3627f0e4c176dbb9ea3b1cdcb3582f08e612155f7. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/USDHM1915805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b611bad26f4a280a0c42e1a18ea456e1e58f3042ed5cdef8a0c3fecc0472c4. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:48:24Z), 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/USDHM1915806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0f9a2c0b33387eba2afb22a97f0fda63b256fa8d1ceac7c3e3a53c406ef4b6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USDHM1915807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd675b37348126d5495506815eb6fe0d1bbabfcecc4b709c72b001686faf4d16. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:36:44Z), 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/USDHM1915808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c0d27aa2026a57203748c8b7ad5192b6c8679fa01d2947893d1156bc9def02. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USDHM1915809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094d16074a130cd0dbec87b6b88933e4121145d2a03f594a7b8041647b99b2b8. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USDHM2205836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415190008b4fe0edfd4cafac132b777f6a64ed55ade0f614ca4a0862945c2c79. 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/USDHM2205837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eff7988618b549120e02654e4beb40315015dd2731752bdadee107b35631cf0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USDHM2205839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064a13fc84e8c44c5dab118d372353ba9511e2d5966db9e4d2d7e10d8469e75f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USDHM2205840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953f49b6f73bd4ca796d09b3ade6a84ea8c052f3a739e5613c6d2c693d161b30. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USDHM2205841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc73d34619984105bf40fb52bee9606440754054269494171ea413d37bb6dbc. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USDHM2205842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41827e9ede58c9536c31ee441ffa3312d688ec0630f62e84e14caecf020e112. 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/USDHM2205843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a85edbeccb01ad767ee69e94a62579030563b5c47c8a9fa7bcf72a80ca7274f. 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/USDHM2205844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cbe9b28618f7fb565f633a1999bfdb68794e2f0bd3b3b0ea738480da95a422. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USDHM2205845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea1688ec1241b39f1ec96860e095c4b7c5a725d394ed55c83fbf0e335e8a128. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:14:14Z), 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/USDHM2205847.