1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x9e5771a915f8a393c3fb5a9d3fde2bdf4767020e54b305e8d6aafe529e8b5d84. 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/e402c154-f763-4496-933d-7f8638909fa1.json and https://artists.proofprofile.net/proofs/artist/e402c154-f763-4496-933d-7f8638909fa1.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 → block OTSBitcoinBlock must exist at that height 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 0xd71995eb2363b6431bd3fabe20d44eaf30e96ca7777a965a5a931707ecc28b3f. 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/ES71G2248757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03ff7aafaad39c79db0636da920f8a651cbfec3a9fc1beb89dfa04fd61a8df5. 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/ES71G2248760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be2e82e5947a47e5839f2aff0c2ff544df9c966eab937b73b8c42e530033ac8. 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/ES71G2248762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a8aadef40a902ea4d11876f67dd30db9b730210a02136c0115386ae80fb3e7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2238826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d2cdabb82dedfca9aa2b359c597ecaaf01a1cf229d17b549fc09d8d9869fcc. 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/ES71G2248756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a2abf8b663450ac234797c83d166ea8853803cb2e70961c8357207d2e99ae0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2248761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37234d94abe7f5ec4279c943de6884610f065c023833d0e4521fb9029fa9aa29. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G2248759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0a5da5ee5f6a36c117fabe9f369168f665790138f8c3ae5f85f8a1dcd384c1. 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/ES71G2248758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a8aadef40a902ea4d11876f67dd30db9b730210a02136c0115386ae80fb3e7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES71G2238826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a8aadef40a902ea4d11876f67dd30db9b730210a02136c0115386ae80fb3e7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES71G2238826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766222ba914dc262c58cde0a91db91f33d523e22a2bd0996c76c9fcf7fb7f27a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DGA0S2416337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d3e86ade5ffd2a805a243a7b1be03298255cf3d08308ee7d0dba91430f35e4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0Q2493619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c87b05bc660d184e7790aae6bdacdaf07c391b8ad30d7d1a63407254f4053d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0S2416338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa90187621c8920cf49cc4fb60227628d91a3724915da63c56ff9776b1276212. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0S2416339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6b6cd5179eda9db9b740d94cbc96a23680bbc5773a0e840df2dd936ec083d5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DGA0S2416341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e7338c6ddf7c3221f69c5ab9ecfd88c53f28cfdd0aced52752fcf966459752. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DGA0S2416342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598d95c3d68cfd5097705bcaced3a141558a57cb318a7f076581ed7d118e3994. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DGA0S2416343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84837a6261d56792ac97833995ae562b612a423b7d21ea44915b6a1962df51b. 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/DGA0S2416344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8d256004194cdf6a216465a8c7967ed922f20d80c1dcb1367e303b9de78a47. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0S2416345.