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 0x7408f761a7513f3b7d723bf1becff5b93d34ebbdabc0c3e7ba77ea892d53d2b9. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41b29d28-840d-41ae-a393-ce95bfc6c9cc.json and https://artists.proofprofile.net/proofs/artist/41b29d28-840d-41ae-a393-ce95bfc6c9cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x30325ad4c269d94a8a1c77789018bebbf6b6596a76efd0859359713175ae1234. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DENK81800902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ad797953a472056757f046b6afe0895495b375fc0d678b8c93823efba58231. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:04:02Z), 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/DENK81800903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8a0d680e2eb86b8a63ed496bf6ce9c8bf7491b01e32ef08b648f7cbfde0c90. 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/DENK81800904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14e98f8c0d12163fe196885c433f4a2d797fbaecc60756416668c9d2c8e4099. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:37:59Z), 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/DENK81800905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe858e545db5bb8faf944dfbdda0cf8c8f686091fe340a4fa14d3e0736b4f070d. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:44:00Z), 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/DENK81800906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea30ee69e6c547f6804e993901b9a0692efdf61096444943095c51fa96cb827. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DENK81800907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211bc2149406308d577a339f5425ea2bfb4d373a3808fc7456b882fdb0fb3807. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:29:43Z), 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/DENK81800908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426d29c39452870589735179d73c7146c0e25927423a40ec898b2e45d4214ef8. 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/DENK81800909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5675d26008453310e743bb75f085b03f3b0c91beeec9c98d44aba7c71c04e8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DENK81800910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d0384b7e0baf301ae26004aa3b198b5cb3adea0d7129656c245c0c87049074. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DENK81800911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bfa187b5a49a778a93476b2365a68368333effcc2455de7442643232f7b32c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DENK81800912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51289278d2a3966a0e3a4c6bc2f3b46f8713692c29a11468a8f54a3efd625ed. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DENK81800913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45375c15f1e501b6a953409894888d35edc884ef329dd27ae5cd47c616839d9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DENK81800917.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62484cf0b5ac22086143e4a343ffe8da78c82d43f46df8132759dc8e67b82334. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DENK81800920.