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 0x1d019b906335dead823cd7ba2d2594b4e9b585b5aee552965c725f3ca9233362. 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/bf6b37bb-ac48-49cb-93fa-0921666f6925.json and https://artists.proofprofile.net/proofs/artist/bf6b37bb-ac48-49cb-93fa-0921666f6925.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 0x075fb64325a6520d02b4fdbd0c2b9ddb9f0c99a461b8c4016cc4601a987ac440. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/PLH492239844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db06f8c6fcbf4f97cbfd4941f23c738f9eec890d0761c3e6b419cbe8462a142. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:10Z), 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/PLH492239845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3bc7d0c09cc60ebe9ab46dba91fcacedc022ec47a173441ac6cd5cca21042e. 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/PLH492239846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95e5f6e60d9e3f1cf0d24e50d1d21596bcaf9cec5dde5d27b46720de1073f03. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/PLH492239848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae66b9ce6a8f34698a46a185976e3cd461e15ecc93c4ddfce3903d938da2a4f. 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/PLH492239849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6765fdc1a1d888553401bb05948469ec5ea50978864ba15a6e6e96bed6b8d9bc. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:43:59Z), 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/PLH492239850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d2ea683bb9da1a677d0e90c12025ccc4cd26fc65f6bbd18dfc2a8fb625cd1c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PLH492239852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338601063689b44caba2adc98eeeb35f3cecabe9e192e0b49551c050b8314472. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/PLH492239853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617223e92392ecd66776e2081a7d7478f23be28b68df25b6503bc06ff4102c7a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/PLH492239859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5febc1e9bf4c3d136c84d17235694600ce70a650936617ba909efbf05825083c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:21:00Z), 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/PLH492239860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd387613b3d332b24f108dafb1a994310f0447bedfcb85132cdfc118d1347f4e8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/PLH492239862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dabb32713e04bcd42fc8436602c02bcef842160b10c5ec1acd5ae0faf345b5e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/PLH492239864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2229cd4f3839be1b0be4ebd8df016375a0c796b0018472cf00a6644a44186b65. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLH492239867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188dd26d0dbf3d03aeef2f2c2af41d275e30dccef16629ab787844c107752f79. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/PLH492239868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4511d0bd4e6b91146d53fcd168c6ffead400cc925856817951e21b43958c2f. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/PLH492239869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5dff925926b30a316a31bbc8efd3e8b1e7d671dd133278794de270a3bccb6f. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/PLH492239870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b11a65740b174a89192a6f9d0df1946c5d49fc2dafb869d47be488de80a24d1. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:54:57Z), 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/PLH492239872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be11b2a9f26cfb087bd75f65c65dc76a0e7414a4e8ca98fb449589fc1ee5caf. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:33:46Z), 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/SE5XG2247734.