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 0x1ca34708f0a79bfc4394a3c0b87d85be62a755d696f8e8127d4f1b75ac93d369. 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/538939f6-2b2c-4cbc-b0f8-63ab63b771bc.json and https://artists.proofprofile.net/proofs/artist/538939f6-2b2c-4cbc-b0f8-63ab63b771bc.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 0xeff0dccbdbbb2a17073291c9e5c67577dda89e06b8c346b90cf997c406325609. 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/USANG2246732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ded3ffc6097c747efbb3671568ddfa23e409c19dfa627812d3c7bf652e7a893. 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/QM3DF2417652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd1ea26940bdb62733c332a0bd287ee8886e3af0b99abbc5ae85e1e007bb57f. 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/QM3DF2417637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e0e59ed63686d0d9033c6df888b7372c3710a32e09df4438ea3905c6a8fd99. 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/QM3DF2413237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82432ae4857a5d2f186317e74188f99df1f7a0324e2b963e9826b6e6e37d405e. 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/QM3DF2408395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3549aa1baa40b64af66f076ca7de4110b4be4e84cff06518c2c6d6a3e06113a6. 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/USANG2464821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279b980cb65eb826ceba1e7e121e7d524e732a5dacd85498056581a0f6d68790. 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/FR9Z62400425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c56001ae65d7b7dc46323e02d8802f314861f67f8844808cbb77a1f468bb518. 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/US3DF2405292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43316e1d811d4f64a8c7127a0d2bea02bacedc53b780523e13c1a565c9720055. 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/QZFYX2460807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942d5b84d4528ab145b8468b2607bcca72745ba0a70d49eb8ba9208df5313d77. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9Z62300514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99364b5c19b062acd12567f09ff3e1a21828eb8b07af5a735f250a94bc7fcc19. 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/QM3DF2283745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dafdf23c17a02346f755b9b5e47130009ce0f9a2cf84ff70fd1f9ac7c5cd897. 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/QM3DF2283749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392b15558bc1c2c72beb013383edf988e85058fe46619d4c01c34695a833711c. 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/DEH742302979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4748e232c087b5bd9b5c234e7717fbb19285348a75b3abd5e08bbca063d7ec4. 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/USANG2263519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010109860e6159516e0272347de9684928854f6fcd32a3fca82be87cb09fdcb5. 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/USANG2226662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d64f9dedff981695ce51298219c536a107bb765f498cb4a527ea7ed0d02703. 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/USANG2226664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2307a233ab9a94223fa2f3362bcf9593ee1da5ee071aaacc269fe6ae5f564f. 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/USANG2226665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb671a6d15a4a94d71e214206e210c663460bb716fb95c9222ef7bdcf4eaa0ccd. 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/USANG2226666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d539cd9f51861dafc08e7334c7b407c02a0278eca75a00834c3bb24014a785. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USANG2224517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec92bce5e9407b5f9683331da9872df0d00fea517cbbd0067283b0170ebdbf1. 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/USANG2200617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d001e8298c4218e8c96a5f85a8369264e45de32ac7f4e3fa9edf56ff3f9cc2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US3DF2275810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ef5c82da511910edde35502d8ec3408e5957fa9001848783648204ff52c205. 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/AUMEV2391605.