1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x66bc6bfce26709a9f1154920a8f308eece3b20441632656c9a4bdec6308ac2d4. 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/0d224c9f-4fd6-4f90-a767-c03fa6eeaba0.json and https://artists.proofprofile.net/proofs/artist/0d224c9f-4fd6-4f90-a767-c03fa6eeaba0.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 → block OTSBitcoinBlock must exist at that height 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 0x4d06bd6d182d1a6c3b1abf09e83d7713f0962f3fc10dde73a8c1e166f1e47daf. 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/QZMEP2055808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7b84aad09889411b65f0374d026793750435fda7130fd0ef65d30541033cb0. 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/QZMEP2055809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfd9108fc1ea6a474f3048da9a4efe79a6dd78457374de28decd9304921ca56. 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/QZMEP2055810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5b9af164149ba799dc816e5e2aeed130712e9354801bb25402221755d37989. 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/QZMEP2055811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a324874b36d6f19e9883736ff58bec32ee5086d48a3afd3ea399416d32cae5. 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/QZMEP2055812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f2ba970e33e43add9d192e46d022cbcd337191d8d2f4fe523b8cf2ef1f0d4b. 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/QZMEP2055813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1fe596b647e1c1538d41a189f34eb302721718fd3edf3bb530081c101777e4. 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/QZMEP2055814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b427304c4a3d5647bca0806ce61fe4fa4a3dfd173575466f90f5f74593a9a88. 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/TR8002100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6ee09e7b90e97d2f69c4221c2ab8eebdb18db2bba4d08ae61baaa29b86b1b8. 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/TR8002100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344adc7c1e38571d687b688ee5440040ae28454d589bbbc527af3e0fe0190352. 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/QZFYW2119248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f28b522436168abee0c22cc9852193c20567f58257e9362b0647641babdf14b. 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/QZMEN2061428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9260a10b36e10b0d4a7285e3ffa715c66cf37b2647c7a69e17644108ff4aad5a. 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/QZMEP2057010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5aa53370b1c24fdc1bf82397a24fddecd301c448ec49d0b666f2aeda59e8d0. 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/QZMEP2057012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6834906bab3a48329c96dd8fc35a0ba87cd32f44d3bba28f801f95eb9b489985. 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/QZFZ42158311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a17cf5fbeb84a49a0e8c945c495be5b5ff318f8ea55b8bdea539fdfd1f6c85a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZFZ42129565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b98ea720bfa30fdb00a02ec714a2d39cb0453d41a02541e7513ebeb117afa1. 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/QZNWT2007791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cd6fd88768cf369071da7973e3db6809669b0e5d50d02f96ce4b3a521422db. 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/QZMEP2070956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d42af065973963e2e079411c3985c105d9f93f8751cf552b5558bdb2115fe0. 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/QZMEP2070957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ee65ff93885a295cb1443e1ab394566532b8d36f7bc69f3a0fbf9f00b76d6f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QT3EZ2564218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e84a2dd0d1d1f76775a17c36b86f37a152e5d3813ffa94a30c0cbe6f11542e. 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/QT3EZ2564219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573f7c5036d5c6c376057ee5210825acc642e548d3439a5f00a291a9ce4955fe. 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/QT3EZ2564220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9a5f2719d4cb3bac906ed35b29c1fcde1990d0054f1236e7b0a31b1d9f2dd6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QT3EZ2564222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ee0258ccf7c8e46058cdcf1a8dad9e62768963d238299cd31c02693d053a67. 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/QT3EZ2564225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda68fb1f954a3e9e051d8064690d684fbac77b316fbe435786f6073da36b669. 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/QT3EZ2564226.