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 0x73a4225b3bb3f97dbf476408b332919f422f5cf669ba1c24e6fce065d1fdea92. 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/097bbeff-00cb-4b2b-a3fc-97a5de29e3f6.json and https://artists.proofprofile.net/proofs/artist/097bbeff-00cb-4b2b-a3fc-97a5de29e3f6.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 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 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 0xd4f8fcfb7857e44834babd6c4b6b0317f0b42fd5a7f93a44e1b202024dd05533. 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/AR5UH2300284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6735824c7fa281a16159ba815c3db094ed8d5c9ed6814fe03d9906fad8086905. 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/CLPP22400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bafc1298fdbb1ce1d9571dee59f118c2c50a905a753f2c8663902627da112d. 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/QM6N22137775.
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 0xfc448b96ab4fa851172a305b7dda045941e40a12d3dc3daeb1983ff3880e85b1. 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/CLA1D2400065.