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 0x996c402630b6aa4604c5bb50c1da313a7c04112ae4fbfd4eef9c4d9979eb3155. 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/8c6a622d-a828-4364-a662-e3694d7e4ed3.json and https://artists.proofprofile.net/proofs/artist/8c6a622d-a828-4364-a662-e3694d7e4ed3.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 0xce87d455a1a1ed63751fd8251d38aa01882b589e9e3c1fe1abf0697244b5d4f9. 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/USCGJ1607706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8924bdaa428702b70befe844a490b972943d1a89460ba16d78a3866a45b1a612. 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/USCGJ1607709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e90ee61ce515f6a496f3810d6bc7d2e65f041d29c350c0e843f8528478e818. 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/USCGJ1607710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08d85e106a2ddc60255a119f86843cde6bcfb1c372c202672b866edace3614a. 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/USCGJ1607711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016f91f58ea9cbd68c34e32385cc33a3cada0d221eb09e2d9907a9d5e8333e21. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USCGJ1607712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb755cd7386a20b1ed31f08afe67aba3d83952fb79f1bde5b8b8db7800dcc6d8. 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/USCGJ1607715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73c46723dbafdbec9afaae96b46e7b0d59a478e3da3afee9d96d37335ce492a. 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/USCGJ1607716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed8854257a95fd2df7194bf60ef806366f20cb95f1c711bfc257faac30e6660. 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/USCGJ1607717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d4017286d863e02a6992f106a6f557c252a2f3232e67bc4677fc4d545b57d8. 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/USCGJ1607718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabfa46a52febe7d4990203d6eae125c5704274227b0325ba874db9592009f04. 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/USCGJ1607720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f5d394d23a9c5d16b87541cc6174fe4fab32e07ecf47fc86272b54dc37d28b. 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/USCGJ1619946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1300d73bbd6c707c3ab4243e408860ac6c6ca1fe2cea88650493b0c301bd6577. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USHM81531036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43830ea15ae9e8e7feb0f3bbdb54406865931889b2af2b9365914d8e7fe4ce5b. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USHM21571781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b95940f46c4022d15069c0dca4080a735b0d32961f0b8e5353cd08a5cd03fd4. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USHM21571782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28947a303e9c75d8a1ada91cfe9c68ddd0d7901263110356dad504e938ebda88. 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/BRFU72000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcb5ec085303017917225cd6f1bd220dd789f27ba91897263fcb0b8000a910d. 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/USCGH1609653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ea66cba97c4042c8f6382f6cc4e2518e7f84855ddb5b6d5a939f0766d5c7b5. 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/USCGH1609662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e30dffffd93a34a62c0a6c968ed4668ac4097fad3efcc76e693c98ba137fca5. 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/USCGJ1604051.