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 0xc049eab5900c0c505bfdcbbf77a808dbac6d0bffd0d80a13992fbfbbe6fea7e6. 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/3f7a1f6d-3728-4cb0-b547-2acd0357d968.json and https://artists.proofprofile.net/proofs/artist/3f7a1f6d-3728-4cb0-b547-2acd0357d968.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 0x96eb74eccaf54c3b01777583ca50d847c8500114fde224d1a0c25d05515a4937. 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/QZZ8B2400887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c02a91be994e3d9daaba57dd1991355c6a87635631c6d3fd49b3707ff106f9. 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/QZWV32419758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523144e2dd53c7c4ffe420327ab41f16e9d8d27caa3d369af3e5f463a160e7f3. 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/QZFYZ2441844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79ce54b3e6e651c91fb7a3a776e7bf309d364173477c7df5fc7806b0268be46. 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/QZWFN2390842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917f5b87fa68f70f6622eb2277fc2c703dd0340d762219ba68b3899499c4b016. 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/QZRP52332427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389222c376b4c93c84b56b0e4ba80024ed189347b668c1ca851c9d4e35c998b1. 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/QZK6F2336407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b21922929983ced23fcf8bb6e29380f98149b3d83bac6ac34f92d5590202591. 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/QZHNB2310761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929efd20f680eb58e94798925f0716a0cea299f5116581c82dfa9f0cb5c6c471. 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/QZHN92311132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15df067e1e6c808a144037c53bd52e68cb3e1d538025f35c5ff89bd22bde3747. 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/QZTAU2251318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559e04a72a988d7b83a403ed362c86412916111226e179f449a481c0f8ee9726. 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/QZES72310220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59fb148a208345fae8a3c4478481381cee16d9335a8611d91839d8a84fc8a18. 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/QZFZ72373099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964bc25209c41efb3a6ba9cead8ee9c1a46650d5d57718b95d4b0454fd0a8774. 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/QZTBA2257148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7b242fe639bcd7fabd42cd93d269f90aaffac748faf0349fb0b9957292bc34. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZTB82285538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa759ae1a81df0484791041c8642cbd36bd806535eb92b28dd3c16177aada4c58. 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/QZTAU2233696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc3a489aee9fc37052f8643e2f83ec6218f8a7079ad1bdd86cd9df5140aa909. 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/QZNWS2265447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0920aff3bb40aabaa8b3f40d88b37fab7b7727b2c7654cadad5c4cba9b04178. 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/QZNWV2116523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f7e8ec1a1a5f515ea1157af68948002dffdc8474562fa4a9ea5aec838cc41b. 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/QZES92196495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b4340dfb634857e80481c0017e0dfaa14e749cbd5ae32b6edd575121ae0cbb. 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/QZDA42158438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ef0668e64a4b71530c0ef481a5470a4c91c6944ba5a664606393efa6c0016e. 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/QZN882585550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d586681c7c5c02232a1766e877619f2c3be2659dd51714f7f9aaaae56704e72. 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/QZN882593802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551cc55fd736a3ea2016b8e7fd254bec466afea87a31ea72c59280eeb25f2ab1. 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/QZN882557007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cb77a49be5476eb82248b42e91a32604c05edd7140a42a2bd4f006dbd6db4b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMEM2550905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389222c376b4c93c84b56b0e4ba80024ed189347b668c1ca851c9d4e35c998b1. 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/QZK6F2336407.