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 0x3cb447df54a7814fe631c5caee03a7b8d0391d9965dbad91a0dc9f07ef54d44d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0cb9d52-b043-4189-be09-bb1427c83446.json and https://artists.proofprofile.net/proofs/artist/e0cb9d52-b043-4189-be09-bb1427c83446.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 0x62dfadc773f747227f43818ccd78cfaf34f05ea982923563ec09d9fbb78be636. 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/FRS182131906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf905bc1548024efb6964794aeb3295dd45eb8f06ca802346fbd17dda4de8b7a. 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/DGA072316042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9167347e5919055858fe14d4e99e5b90641857b4b28ad9533ef8fa2285a7ca5. 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/FRX762124782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e437fc81d0ce7f896afbf44aeacf577a11a8af44688b9966422e22fbe9f784e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:03:35Z), 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/FR59R2404679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2f33191007736d2d5715361ea7f1487cfd755a7406027cb30509a1b4781ab0. 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/FR59R2404680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71e43a038f23dc7f6ed4989ae0a909381deb621da11763e24b761e318d6eb66. 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/FR59R2404681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac3f526d3929d4a28bbc4f13a82c4358f27c1aa6686aea8611947edd4346ed6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR59R2404683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3419329c5f09a6f6ef47b44c0bcf1af5ce45a67b6e7592614499be5dd66175. 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/FR59R2404684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabe91055f98ba53b6443d9527d6883ebdea303dc321a896bc0beffd7d9a6a09. 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/FR2X42404790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703420a1e3a56996ee84c0352ecf238b951fb01f76dae992b88597efdbcb295d. 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/FRX282125181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05385d30d2d04a837044ea770bc4d0637604f2d1a98bb12ceaa21042e236c38. 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/QZMEP2307672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ba89661474bd8ad3845f904844a1afcfcd74260d01fd679eb4b3c278c770b0. 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/QZMER2393210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6128eb7a4bbb3f981e62e872303bdb503374d5d7960778bba8ded8bb8c8892f. 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/QZMER2393213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcccb4d384128ccaa8727af1582058768471c5057190084f242e4f469e848d0. 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/FR2X42263932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1359e5a2b568ebb410dc38666fe68029113fc82a50f6db68e56788553169043c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMER2393214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b7e8be89f3e8b7dc375b8575349f6797425ee6caf264598dc207fa8c355b36. 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/QZMER2393215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ffa8d7a630778f4669d8d1005083960f49e4bd2b8854223fc17bd9057a4fee. 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/QZARB1876484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e1cf5adec1d04344027e1426a62417171625be5eb2cd345857ae5dc83b3d0e. 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/QZARB1876485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f13ad12663cae2fbaf96c08a40627a362a4e9b29e5eaf8cbe54be3be963187. 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/QZARB1876486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e81709c3ce30c2d9aae03c75e636954e7d0a5dd114bda5fea5b52d580ad818. 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/QZARB1876487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2031ddcbfe736c6bd9a551cec6ff84fc866604b27e6bf87934db9cbd3ff87db2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:03:35Z), 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/QZARB1876488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe850713748e314891fa16bb4d027bb0563c49d0b68001fb7308584505045089d. 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/QZARB1876489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37238dc6f6736b3e58d28b25ddceb34408e173b01cee03b91091536e07c39bee. 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/QZARB1876490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b4c373890f44d60841e40e99e6bc1bf96b788c8462b916b6ac92ec3056f016. 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/QZARB1876491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f47ddb6642b89d6adb81283672010c58236d5c766914feae8fb4d974a262c5. 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/QZARB1876492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3675d12cfd99bf4a5a6cbd79083cc53e32ea96802e266b7ca21440e6719e3740. 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/QZARB1876493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f61647c77eabe97aee747cec4fc7bbcaf89a0d923e72b5556e2c4d17ce43ba. 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/IDB812400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf070e7dd8c3c879d93aaa9a6e73da8576f53ca4ac9e54a261bd32ea780befef6. 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/IDB812400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d13184ff36de3660d73616c44a75fd5ece1cb818037ebfcfcf8266c93394ef. 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/IDB812400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4b715973a3a4e9fae0b00bae73f90fe224c2ec3def9aa538b5151a1d393ada. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:58:58Z), 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/IDB812400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f61647c77eabe97aee747cec4fc7bbcaf89a0d923e72b5556e2c4d17ce43ba. 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/IDB812400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761a6c83449fce8120ccc408c76cfdd3d62c12f03ba1e7e021149311320409d1. 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/QZES51939827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99da5c67d2c4a00729cd33b638d05fd4affd92851be0199d7ceae8c96620de9f. 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/QZES51939828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e071f875a403e062b46380baf73fab2ea046955d1b6fcb8935d5c6f20f586a. 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/UST8K1695602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25c1814e2aa578d53e038a266be31ea7335602b58c28f090ba6de57fe16f0e3. 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/UST8K1695603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e51fbe269eea7130448a21887b9823de38fcc15e160b55f04ba2ba92db3639. 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/UST8K1695606.