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 0xcaa8445dc5d60e1497ceaee5dda7d7f0a74f2227c6ebf80312f80191924717f1. 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/29367e0c-6f86-4f6c-bed8-6fd06cffbbcb.json and https://artists.proofprofile.net/proofs/artist/29367e0c-6f86-4f6c-bed8-6fd06cffbbcb.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 0xc1f93eb02a3909ce235d1aa4c32b5e7805df5ed4f991c76625939d106794821d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:03:00Z), 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/US3DF1109833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a82535b855f513750d2792bdb81c8e19c6793d4f9f6b202d3d4875a19adec2. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/US3DF1109813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe87f9797530b9fb9198740b0217e92153f5672d8d32a18dfa51908155f43675. 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/US3DF1109819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6755028b1ea323464fdb04200bd40ee02d141e8cf1d3a3e8140d7dcf7b6930. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US3DF1109825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1534ae372d142c1cab67d83cb657fe755a86a690f29646c4ca49d72d6e2d6cc3. 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/US3DF1109820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb210343ec0ac1efa02b6467315fb5b2ee478e5b75ac930acbe965ab5a72e55. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US3DF1109822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dfa7d431a3a24dde57a758c52cff2199af1b7d84cc655f2b89282776183b14. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US3DF1201264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812efe03edff595279d96ffa2a0c1c871d54bf804d119e0763ee6f806c46498d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US3DF1109851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c12e7c4bc8bb7065b5f58c75662beeeb965e9555753f1a1607f86f3c3b6ce1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:02:28Z), 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/US3DF1109856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30162a1826a1f04ca522e18d3acb4b4acb2e297ee372ee70603c70e1bbb60968. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USZBG1116651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16468de0e35a16f0c67d5df0b96042b06ed459a76191ccd9fc34e873c3bbc14f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USZBG1116656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f94aed47247af1fb3042c9d2877fc4324d34967f928090feb955a704f59ee7. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:30:34Z), 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/USZBG1116659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722f7c074de3dcb3f549e87ed710ab40063c46a3ef76feaacd3bc788acf4858c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USZBG1116660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6e4281c6ae5868b34f0f3a033df706ce457e3bcae663354e3240e2de14f235. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6DC1522286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaed34c260d70a7265133955a1b8165ad6860ca088cedf39c78ad9a3da96b4f. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/US3DF1434658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082ef22053a36d4b70e241e7b06de915d4c33aea4f7a3e936b6919457f124719. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/US3DF1434595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507e097f7e2719525626e0d0a3858f85fd21bd208f70ea3106cb683cc1d331a8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3DF1434608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962ff836a52b7bf2238b5fc05d6e617613bfb562121f70d2254bd2567e56c7bb. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:41:31Z), 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/US3DF1434665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac7af764718625f65667ed78358d6a2e10b111d096f5c04d689bc56345ce80c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:40:50Z), 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/US3DF1434666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32817dc1d17bdd6c55093333bd35c0deeacfeda71ef4e25884d93e0c73d04e39. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US3DF1434669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75d02e5864cc87718d2faf3c346d20981a0396d9cc8ca67c09814b3c3d465d6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US3DF1434670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb50b9e53d26a4b1d12c0b0c72ff249b99da38c889cd5cdf2cd93b6f1e4a9dd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US3DF1434672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55bac0616a253e1ea0af2febf4bb8b229fb1e3608819319275539a25caf9235. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US3DF1434673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebb8abf6fe6b8a5507e99f9035ac382b34b840f02212de97098f679647e868b. 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/US3DF1434677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdbc22df1ced16f50f155873a1faad9e906cc83fed90ea06e776315f6056674. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:21:35Z), 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/US3DF1434679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb8206f36f690a9313aad0ba0d30875a57005782a73b179a561bf4022375264. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:04:12Z), 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/US3DF1434688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c03513112e0fe8545e17bb029a20fc5d20786fce9f74274b11deea0a39e672. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCACF1559935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc624370ca8e9a8a75bb1abbada3e3a0cf5d3e1f5089e3b8f6c7203381c0e0bab. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCACF1559956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00331a1b7826e62e699183881a882530777c65ddca4c78361b333659d5de3753. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCACF1559972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0cc6f9a110aa49fc67b32049eb25edcc4e627bff4f72f592cca4fc71ccf226. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QM6DC1874141.