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 0x0727746f774ff5319183d403c84368fb842e6955131c39f2d85bb502d276aefd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e291ca0c-597e-415d-a06e-e4a5206d2245.json and https://artists.proofprofile.net/proofs/artist/e291ca0c-597e-415d-a06e-e4a5206d2245.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 0xa80116e4bce1ca65676946783a030ce73c920d1c3227564c8c523601aa1518a1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR5UH2300342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3df3a216d58c1d3519bd6b7990a6444f2f1649295ef3b314287d9716585e4e4. 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/ARQIH2291724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd330879f8fd1f10905f20862ea59a2ce07fa92bae70434f6de706efb75398100. 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/ARQIH2301480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9faa24a4781f1712b4bb0b1197412eabe4742f5d0233647086dbeab31ca83fb6. 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/ARQIH2301506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854d6a98ea482aa3bbf8d67b0a41527482978daa1c77bad2933921406d573153. 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/ARQIH2301507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5977a08723464a9f50727d009a9577e7054957010d7aad94389dac54d323b705. 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/ARQIH2301508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abf1efca03b6ffd4d716a8a6974b84cec5d8a434892994ad5596b2abd4f93a4. 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/ARQIH2301509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e71b7bddddec76c2cbc04eff91254fb7adbf6ed3418fdb60ad257e0d5f32de. 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/ARQIH2301510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6a535c21680c2a96b96a006c0f1611633c8c5a075647b961d3539b7e99c839. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARQIH2301511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa657a5a43acf1396d3be228187eaaec6d391e2384c22b921d3050fce22adb160. 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/ARQIH2301512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bcd8f0f2d086e8f38053c4a5ae60bcc3e01999a26e2e04114954526722fa26. 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/QMFMF2127911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb946ea1d5be46547e7077720945d2b6938d65d43c8c898745669715c8748e2. 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/QM4TW2258187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66de72d6ca1760ffe652f62a10bb4c2a90a147d157fdd4548d3b6ed90a7f912. 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/QM6P42226791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ff9613ecc35226bf17682b77c0b5ce70fbb54a475610d7144a565e916c1f71. 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/ARQIH2291359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3df3a216d58c1d3519bd6b7990a6444f2f1649295ef3b314287d9716585e4e4. 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/ARQIH2291724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde937ed6d7e53db537be09cd26a7e8020a74a823ff55847cd7c676ea5cb2f37. 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/ARQIH2301655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381e0dbf1565c179bc1b416f78d123bde2c65ec5cc34d26c5e6b7c65e775c4a3. 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/ARQIH2300909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce2a2705062d9c2efa4d24957a58ed99f5a987b31ae42c0f864b638a4a73e9d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9K2354658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514b0480b3962a511c70984ae78ba57bd87ee1b7d4d6de5fbe527c5b9cbd340a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARQIH2300420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca136fd346ad0253fe71f7478ea04a7f8e53999b7e3d1cb7e671d4f805dee176. 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/AR5UH2300577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7017a42bb72af38ec6c9e3adebb23dfc831ca4c65f347fbd266fe3823d0abbe. 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/QM6P42364201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6ae2fc74f44361afd07037f0d12fe181441a0994e6b61df2433b2c32361ad7. 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/AR5UH2300419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510721339498fe365c7b1c7ee19068928d371b9759b06f79ea3d08ab2276a22d. 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/QM4TX2386910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e34e531f729bbdc01e9a5557fe6107012cba462f2b43f69ff87cebd93f1163. 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/QZNJX2223652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ac0b2dfc5481126445fd061ccf59a0ab5b7ae6e429073057bf9b4ae8c889ca. 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/QZNJZ2202416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce9801b5998541603d5d909721f14d604491f62b5add36fa89c54a355f78b47. 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/QZNJY2143016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f84b4e4140e6f542dd4c0cf6ddafa169e2e3ce505c9cde315eabd067dd2688. 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/QZNJY2156960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9968ee5faabba8bd97ba97b34a8f444124131b08422e449b68cc1de07941c94. 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/QZHZ52182382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8530a1e9e8ea5800c9f585525d04ea2b1f301007041dca9d8fe49b928dbca9cd. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZGLM2104472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ab254c56ba637ebac2f56c3c64a16d09e90efabb4c36723e15673e097f8969. 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/QZ5AB2173881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b76b9da5b1e1c379127a47494b06f0acc75fa4ba8c70a44acce407eb35d5e3d. 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/ES47E2000984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fa48a255c435cca72746eb30e4b3b4de631aae8d8f20c86ae5047ce0c4ae1c. 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/ESA011732085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cde007be2ec694d5ee48fa75a3d3d33d3dcb9d865917b12c97bd034de487c41. 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/QZN882074862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6ab83aa7fab831925a29aa8d4fcc5dd8f01a61c56f306797d79e5427ba2b60. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USL4Q2013812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7b22c1c4eff9d006de82ade4caf4a8e20b6663e59c4da8d22f9f575fc993ad. 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/CA5KR2060951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51a4e5b2e565c7579cde7376c50c8ac0d7973f066fc1b7667ebd77757f051ee. 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/QZFZ32474742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cc7626dccd0fac69ed289e078cc5308df12a88fef57515763857b29f5a5584. 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/QZSYP2281055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3deaaf9988e8f5ef4db9385286e378e9d8de7b86c3c75a73a958c25bd85426d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:02:47Z), 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/QZW9L2444692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca136fd346ad0253fe71f7478ea04a7f8e53999b7e3d1cb7e671d4f805dee176. 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/AR5UH2300577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6ae2fc74f44361afd07037f0d12fe181441a0994e6b61df2433b2c32361ad7. 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/AR5UH2300419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66de72d6ca1760ffe652f62a10bb4c2a90a147d157fdd4548d3b6ed90a7f912. 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/QM6P42226791.