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 0xb5fcdca9edec06f6d2d970179ea667ad44a5177054bc0b7d61a9d7b581109878. 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/f7cbf220-207d-4049-a1a7-3a0ba2b33f6f.json and https://artists.proofprofile.net/proofs/artist/f7cbf220-207d-4049-a1a7-3a0ba2b33f6f.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 0xe0a3858e8a576b105958c109df60f8df8313e78a739e91ca818a47561775ccfb. 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/USDXS2303938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cc9d222eb868719c13b3bd65ba86a308a68672d7b0cd6998438814ccb83d91. 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/USDXS2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6476de6d52d2adad5b5bf1ca63800b8a5199ad0c53be960ae7e3cb534003d3b0. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZDUV2400487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be497e3f51654c5fe3a0f284acc606b1a2c14ee7319a649f2c3086c8abb013f. 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/USDXS2400837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a3e99c92ff43b93f2bf6e9383b315aed23c3372fd85060ab1021a6ee7a50d5. 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/USDXS2400838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d31b6fab9c9e0bf309188aad4d66441f1f5d8fb2b230c0b3d7c3421ca6d82f. 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/USDXS2400839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e31fddb8d6c78f371ba37742edcc014c1c82d7ffe7ea86930add02c1352102d. 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/USDXS2400840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39b40b0317d94a89dc9f344b44cd19c53e08ce6e2eeabbedff14ca41934221a. 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/USDXS2400841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6277f035ee74fec812121af6fb0625e19c5e74c9439fb8e1d6f7dcceb3c206c6. 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/USDXS2400842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ac3ea47cdaa338ab2eee88bec168b91dc60c885ef03f34b1c2fbe1bee10cdf. 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/USDXS2400844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ef3550abf384885d95663672703e6f375fdd0ebda5f366e820c9c04ec194ae. 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/USDXS2400845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8c5404b7e7bb5b1b706f763c8aee45379e001b136d55068565b64eb170bb51. 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/USDXS2400846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a3858e8a576b105958c109df60f8df8313e78a739e91ca818a47561775ccfb. 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/USDXS2303938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583d4799d7d8d24c5a5f3043675e21c6ced7fbfed07463570644db23b6f628cd. 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/USDXS2400847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6036d344957d1738f5401b0534cb617c996da9d75afbcd530896a2069fcacceb. 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/USDXS2400848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c81e3f23c118eb6efe077091f475802a43ddcb74cd02deeb196f23cd0c8cbd. 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/USDXS2400297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7116bfc183b6e3d2a64b6144257a82e453fb56eb3f8ca57268bbe7bdd436fd5. 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/USDXS2400849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973a6b99497f7acbdb47174cfcc34a7a3ef1319faace9ce3f42c566f65a7f7fc. 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/USDXS2400850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6ed7b6cc6f891c87e5749e1d3f0af2203500f4c861c1b170f9622f986ab70f. 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/USDXS2400851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc05ab900cb2699ab94fe8b3dc6c9821ac70b244db5b5bee8aaa28afcab018c0. 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/USDXS2400853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a13fa2516b6ef2daa635252cc1c4b5c3cd51ba376f0c512bb9b2caa1d27a8b. 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/USDXS2400854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbba94459401a776e23a230cf93ff2024bbe972fc12dd62da6795de710a12fce. 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/USDXS2400855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd715f339169af3db4b368355b9f02adb9d0a8dea33129ebfcdc5b58076c10640. 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/USDXS2400856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586990221994d6ceba550048f3247fc6a736e215332cb7a97cfce07913fd488f. 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/USDXS2500241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42f84427a990e9fe35778083731ddb988fe1cf8c7542d04f63ed3e06b03a1fc. 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/USDXS2500243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090ec9c33650c9d2d4a2735ab098850463df771c8bdb52d6c6c72707e0b09494. 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/USDXS2500244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf0cf83f79841334f749bb2babbf452607258f7e0f2bc51a31fcee29a87973b. 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/USDXS2500246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f472b1915c6e2d66dca93099eb5a66f336020869d248db8284923d53522adf6. 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/USA2P2514496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc3632f2fbdf9e5f808f979a9b2fad896f3c25f50e30822a0392605cf7799e1. 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/QZTB72204635.