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 0x122f400ae63b10f6c076d028a1478ab3a8a0ac52c5b5278d07b4514fc9fabb24. 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/e7bbbeee-fede-4e01-b435-8cf6480f343f.json and https://artists.proofprofile.net/proofs/artist/e7bbbeee-fede-4e01-b435-8cf6480f343f.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 0xb975beff2c22122a6f92497e01e55622127f76e062b59eefb6b4b2301e0a4acb. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCAHO2364791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a65c14670145fb9fce7bb7cbdc292701a049863d19b00dad51547d57549b6b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:24:29Z), 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/TCAHO2390898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f434591084bd9d166477ff1c4c6a8df5b15a8b6b6e188223677d3092bc679a9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAHO2390905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ec9ee4d86932ef3a1355819a925c2bf96fbb3ba9f807a6d52515e33c68833d. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TCAHO2390911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3593ae40c29529ded8221b667c622f8df84eb3bd94d28ef5da082d5bf9b4c3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAHO2391037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff032f2d089fea865692a55fcdc693a10672c6212ead5d48056ffd4c66071a0f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAHO2391055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7fd0c8345f9ba4a27dd23b3c56eea5b1e31293a6ea0f52847d9fe2a104efc1. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/TCAHL2333467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b6a67da7fc45117ee966e9fc36f58a5822da00b388c2c67fff57d9faef8421. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/TCAHL2333480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54940122349d1a448a5c6ab6206c5b987a8a642724fbfe5bc25a9fad6cd21e9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAHL2333544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372e3440678f6bd0e81229f5d33a9656b054a226c5c21d4ab12b7e4d3848e19a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAHL2333581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9d1c7056888bc50f2ad664e6144e5928a0a03e3cb0bbdc55fac95008535728. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAHL2333585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c65be54d66e0b29d9c0d77c53de3ff8cab763af1a4cb79f623b671d235c48c6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAGS2208632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d84a36940eb409154d34fff085fa2b16079321eaa4340275ad4e6319f6b38eb. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCAGS2208654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0727ff0eea5f4e132046a8fbdc75b83f091ce7a9bda66f73fa43c179a61d09. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAGS2208664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd14f3fb8d216a595f2178c02373f633c529652917ddfb97fe403d1236405ad4. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAGS2208671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c51ae47e7d89c7e0784d3e2f676a70d0a092818261bc8ea226d26f47ee69336. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAGS2208702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5721aad90919c42d8d7d418d6fca0bccdbda9ded58675673f8c3bfc6f66a8064. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:46:26Z), 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/TCAGS2208709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2da1e6c5d13b5dff258a3df469effce47b398dd30d39782aac733f3ac6aeeb. 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/TCAGS2208718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdca0ddbe3bedc390e372c355927570ab7ff403cbf7497574fc8714570885a73. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:30:09Z), 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/TCAGS2208725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff2d9787656092cca33cc32d1f790983fb254fe9fd43a64feb78a66e338b48b. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/TCAGS2217053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265264477acf5344e0859b8359efd2955c38c34b0e3c3c56f2ea453a9af71454. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAGS2217099.