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 0xc83488eb8c7d4ac44dcae3fc44c5ddb297af31f54c18b736aefd97017c21c844. 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/425a4567-e1c5-4484-88f1-d69e8fdb2349.json and https://artists.proofprofile.net/proofs/artist/425a4567-e1c5-4484-88f1-d69e8fdb2349.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 0x1a935b77479a1344e223c1223fb78be5f0605ef106569a6910988667cbb9c550. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DGA082310780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d58c9ed63f5c67e01ff15d80df53ce2431f77596dac89e8277de96c2effe00. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA082322227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636f4bc734eca5bdfb5ea8e1199677772dc63a991f3fbcf1219eb61531a89850. 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/DGA082310536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc40fcde5de253c2e8b3c76d726daa10673d84b1b38f813ec31f559f9e6b5ea. 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/DGA0T2465998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f06b0cc251b59e3d0c93de1e0fc14e193b4dd7b63a3aaa3b5712a63d707bb6. 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/DGA0T2466002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd46eca6373d7b0c7e473329ae6ee20ae7fb7e1270dd426dff12f7eae9c16bf9. 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/FR2X42557864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485f614aaef7bfcba2ccc2b3f5abd62003142d32c0ed8a0a0a7a481ca2ed59f4. 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/FR2X42557873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65805a633034eb076c903f4e8174e5ddcd76ad1e7d821f28b968440c0d772653. 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/FR10S2578011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b028537fa9c633c9290db6e809a473634565d50ac6ea746a74ffaa66cfb6c9. 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/FR10S2578015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69373f38542eb3be1eb363373df33b7b94866350b9d7cfc1e9ab7f22bd126037. 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/DGA0S2429869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac52cfd65043882b22f4d3f2576fb21904c424c060edc31cdd45ef3e927bb595. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA0S2458426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dc0385470e9ca01f96f853ed6fcfc89540b91b8aa1cc71c7852732a06381de. 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/DGA0S2490929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1478c004711ae082bcb8137981445c36f608a2ce8fcf59404bb7714e4c90257. 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/DGA0S2490930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c297e00e68f4cc0af279b192ebf6efa459e337d34b14564c04be9bd2b447ba. 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/DGA0S2490934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3523896d9230896ebae3e86325f17c7a16f2534f2b8c323d208a4faed879dbb9. 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/DGA0S2490936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f06e019e49576b278dfc5ca33307db416cffe10ddb22a3bee136a84989006d6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA0T2444322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549f96d06d119f160b282be36bf038ade4f1106c5d7b99c04d3e68c012b1166c. 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/DGA0T2444327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74141547aab379b4f4b245ad712a51eedfa6b97b9e86e4abb10d89d3c189fea7. 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/DGA0T2444328.