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 0xd61cce572625b70cac78835a02e93c8500df6906530b235e49d598eba8d548d5. 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/7f8abd2e-d510-467d-bf07-4a001ad8886e.json and https://artists.proofprofile.net/proofs/artist/7f8abd2e-d510-467d-bf07-4a001ad8886e.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 0x0ca0ecc26ae94a953d2a47446b887069540601ffe7535108f62d106003732ecd. 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/FR34Q0009020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bc422207f2bbfa2eb8c43b07813a0b72a29f8049d4051622ec7c3695066622. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR34Q0009070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa9b9da87671adcae59a2f62524197407d6162d7ab24b217bd18888fe718f19. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR34Q0009090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1359cd9ac164988ffa24bcc704b50618b94324fe6af1c7ad0f6858d5adc29888. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FRZ010301970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2165f8165fda024b7df351bc2bbdbf12ca83b7b76db0a6e1401e1b85356f670d. 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/FRZ010302010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8e00d7c848cf7381711a94564162d1033fe2b4cec9a0942891662a35db39c0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FRZ010302080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45bf2f71b8c32bae56ad45674cb502148c6019b1b865b31e81185c37b453ad3. Chain 2 (Bitcoin): anchored in block 956777 (2026-07-05T11:01:08Z), 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/FRZ010302100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64e56fdc4633434a4fa42a2b13ee72d5c72e34518f86cae0fbcd872969f0802. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRZ010302110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619c57f7be1f9ee71553164e5b1b8912cc05830bcc58192cfea968b96ffe30ca. 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/FR0U91202951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ada9b0cd59cc27650ef4d2a58986971c85c121fbe33351e770411e37e069f5. 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/FRZ080201040.