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 0xaee5842b1ba997a5c73f212ceed1328167a99b8f25740943b8ea35462444eefd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87bd84c4-5261-4409-84c4-d3b349d08034.json and https://artists.proofprofile.net/proofs/artist/87bd84c4-5261-4409-84c4-d3b349d08034.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 0x251ac9ddac2e18613ff72f9b1d9081990cb79036d0a68e71bcb30efeda29e4a9. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:54:00Z), 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/USJ3V1047522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4acb79d9bd131750615cd99865db53c51d7445a714e639af82cde57252ae796. 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/USJ3V1047523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481fb1861d61231192f22ebb9d14bf4867ebf9bbd934cc608663976da1619ad2. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/USJ3V1047526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b79d7e8f26fa047216f4650fe4fa88db5b5e73773541c810e35b7da0fd5d7b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/USJ3V1047527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1bdd5456d93180a63500953f2f32976a329f1c8e18b8f47b29789611450ac7. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USJ931170239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b58f4e1a0376460342b5339be2b76254302d4574b46771438264478550a4ac. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/USJ931170240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbab57fcc3b2e8ba360707efdb2f6dcf018663c33b49216e0ce1edd7821674e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USJ931170245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea8598aea9ece1b71e859a206606b4bebbddd069a6c002123083440a5eb876e. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/USJ931170246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea817ee6064852865f6476f70a249a1482cf4bbd603781a5eda95ef7ad84d19. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:19:16Z), 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/USJ931170249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0dc0df6759a2d698bf609d9fcc573edb7fd3d8efb6991c11ab2d11570f3611. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USJ931170250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6199afce471618b02f8a2d00e17839c28c2989fa63d2665f3dee1c92e7095956. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USJ3V1149606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fae16a8ec96c7afacbc4334bf65b113762892f009e38201f60a4dc1dc0180cc. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USJ3V1149609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c2144e46bcf17591e2bb7cd3ac7bee760cff9999d60579e984f700e5a5e050. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USJ931370106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05009a29e4374cf7b307d7b8bac9ae8f2ff4df3ef95861e975fb70f00863c00b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USJ3V1263445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906cee26b3c6a83187508e9985de04de0afbd6aa6dde98f185e21a32910faca2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USJ3V1263446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c6e68d061a227f9d4301925b1032d194ffd2a3774a51e4e858ffa368a87135. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USJ3V1263447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9d9fd5ca631d992be13f4998cd9fd9220a2f763c7ec98a660c9797028d88df. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USJ3V1263448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460356af11f8dafb6791c23c5118a0cf7fdab42f24d87f13c91aca4793202385. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:49:54Z), 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/USJ3V1263449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e054b9dde16b83c8327e99c5f64f27d5e694fd14d74a17953ab35fe6d2417e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USJ3V1263456.