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 0x35c3ecfde93f81f7698971fde9c6d95696a9184b81d1f61fa1c918b9a69d5f6a. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/081707c6-865c-47f7-9509-306805d07d80.json and https://artists.proofprofile.net/proofs/artist/081707c6-865c-47f7-9509-306805d07d80.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 0x67c99e614789ac22ab8179461197f5146a0c850e73edcf5839ee212e115e6a5d. 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/US8641078314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940e3482ad66baa34fca78ca0eeadf6919ec0562908d5f9a7f7cb36bade32f43. 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/US74R0591311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc05b41c51dbb980f4d58164a6c0d616a372ab974a0f8125284922406d7f476. 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/US74R0580113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36095ced50aea1898ff68a12aa44f1f638b91022aa4dff13d8e2e1cf67d5945. 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/US8640561002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11b168b5e516fb2aa057b57b8511f3ee5f0e30b2e52401c7cccf271e43c72f3. 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/USMRC0015401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807d478db1c733ff404ff56df1db4a261f8c079bb19756069fd3d57a473d46a8. 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/US74R0592505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b4a01ea738a15b05193ad1ba1c7429b59bf30bad4c4d56a4b33417e95d9ee8. 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/USMRC0700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f97a494a4af5fcb78255479e2d25c4a76f80a97d120758ffa1e11920eaa3ef8. 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/US74R0594206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843bd46bed22c5097e6439cf900b6d1daa7fff0d1d5598f14a9ac7600482ea12. 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/US8640555305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e9d8e88f245b7efacfbef46667f8c9df1121a1915681057f43fbae610b0d1e. 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/US8640575011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3168a3d920095528611871ee47bac63a039270d3e68e0cc3cea9ea6abdfe82b2. 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/US74R0529509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a6bf1ec42f3c2f7f82273fc7a59937c7059ac9c76297c47f57550e7159d29c. 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/US8640577010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916a79a9d88b75d673af95a3b5bd20ccb70f044d7f3e6d745da8f5b44b5f8edf. 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/US8641279408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fed0deeb8f113d241108db390f3b9441d46830b538e15fa2098118bbb73cc9. 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/USMRC0418701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c302b8ddb35c266160e97b0793a83b604d55cf6588f3ec35ced9c7c2137063f. 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/USMRC0700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517342d0f6a883eccd82f48461a8026b5dca86a065f96752045848df04591276. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US74R0591608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae47c244259d0d7cd4628bb2e5580056ff0227b398e2006a768eb32fddb4b4c2. 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/US8640677305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf852aeba5318ee037d039cbb252c5096165dd70fb8c1d8ecfc9a7015c4eada5e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US74R0894908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d043fc898d4db427aa94ac0299763c73fe70b09a43119602bbc2e1a8e39dce. 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/US74R0591611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e62d3f259fe1edd7a002b8bc23b17ceaa250820544801be3ab42b2842e42ca2. 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/US74R0593110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d95e0809a78a6841fd22e0182e25a49bc716bed117c48696b612cb33215e64. 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/US74R0694302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e09c7afef8d5ad2d24f125355c044124576ee085168c268cb9ea67cd1e6356b. 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/US8640575808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9feed392d3ee38cc85b7cfb93032776219081e21ca6174fcde304f3e8f452293. 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/US8641871403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0929a0a6da55892cbd974ea987c55f892f2dcfc8c51547ae80a8fe4d19071e02. 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/US8641078301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038303764f4d2a67c97239b45c8f0fe5624dd0e8a78fb2add6d3ebbd90a90a2c. 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/US8641078302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc568bd8489555a56b26709c75b7b101200736157120d2aefb34f9018560a184. 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/US8641078303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bff50b702914606ab804f32bb6cefac65c7f78ba7dcec29ebec8376734840f. 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/US8641078306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9043c23d30b0f819df48a5a1129ffa10d7de8f18eb2f62e77721a42b9904de11. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US8641078308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b01092c8fb304865a503fed5306c0752354c514b547d113196b1e1987470e25. 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/US8641078310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c99e614789ac22ab8179461197f5146a0c850e73edcf5839ee212e115e6a5d. 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/US8641078314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40abf0adc3044a5ca7729d1481a134f919de1d4332d67d2ca3e211cfee0fde3. 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/US8641078315.
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