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 0xa51cb2338b6ad28e398519cc9dba88b77ce9a9295615cca727e01f20ed5ee9d1. 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/bd48ecd0-54a2-4869-929d-46ad409edaef.json and https://artists.proofprofile.net/proofs/artist/bd48ecd0-54a2-4869-929d-46ad409edaef.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 0x868616d3afdf946139d4bf5e3f59e2f91229db75fddafd2edd2f1add8779e41b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE6HN2077640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334a167ff8ea0171308c15d4b2b7338b242dd02be6aa38ce948c5b7e3805f730. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:52:54Z), 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/SE6A91926044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a086c75c7e0f9f1caa9a8859055b053955767ba74a9a7fe708761febc3ec24c. 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/SE6I32072190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836ebb6b9edf28ab3e447b954c49e1ee444a2e07d9b62bc622f004a876db3eca. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:08:40Z), 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/SE6A92042997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1021d17dceb6b02be3f71a684f549cd518b1a173bfc48fcd419c0a0a0ec6a39c. 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/SE6HN2084022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e3ce169d5e7b659175917c541e132b9e1020110f348b84a1c2bf7f4bfabe4a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:01Z), 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/SE5BU2057066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9492aaf011fa422e1e59153066d78c21b965ef0c0ba0df904d343e35b5428d07. 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/SE6XY2144466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5715d98f369235f08cb22144aca45fb281bdb670330c41b46b4798a88f4812. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:42:35Z), 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/SE6XY2144417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad4eb84c347556b292ab2f7b910b7ecd099c94a9f2d6e34a02957c2cf6d7c8e. 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/SE6QE2368061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d52b08c3b567163020e5f50ded7941d3a8eea33e7582496c15235154b6960d3. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:03:02Z), 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/SE6TI2386244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbd90e43f95d96d9aeaa6efe6e26df714846a98ab61a062667b0c0e014ac027. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE5BU2407832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dca132b81ca293af723d788c5fbe7aee3f810a0bb3dc559250b952ff17d5b78. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/SE5752424579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91fcf7b18dd3029f327e9338da1bd5ec10d826ff7ab2d93d3f590232f080eed. 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/ATAJ12400321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72155c9a1b94265a3b3955b9b2639276aa6a6b5007827b78f16089f86c3f4c0a. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/SE6HN2458567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641f3e154033b210e95ce933a098aab7cfb94c08f0128ff8e0625317b53cd848. 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/SE6SA2417846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ce0a87792c283c2bbab5aeb887988eaa569422b20b4d2eb943d341f22b2913. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6SA2474767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e6093fb375400e50be2b469fd7b542aae0721ea825912875ea0ee74623dbc2. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/SE6XW2427640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac5934612e08de515f87896b2a13653e9ce23861cbc20089e78f3c8f99bdcc1. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/SE5BU2512386.