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 0x4d741658b9a615e38a5003c79ae012b1facfc5d91b4e6c96c7cf67084830901b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3c00e5d-c5cf-41be-bfed-da6b8e375aa5.json and https://artists.proofprofile.net/proofs/artist/e3c00e5d-c5cf-41be-bfed-da6b8e375aa5.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 0x3d014ef6cbbd40fda1a525ec5c51ecc3ff150cd6b515c21be802a333f7baaaf0. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR10S1904411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6176daa0516e837a9916581aa3796d684d1f29ea9098c36798392cbdaef571dc. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:22:58Z), 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/FR10S1912423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb23d2ccb71fa52cbb790f3a5993973f4f832cc3d5a04a4e18425c531181ed0. 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/FR10S1912424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2717bb3084a9f2b6db9618191a71beb82def4de5fa1836502fe100bd6ab7c803. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:02:59Z), 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/NLSB72200932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d9b395524961678f05328c960ddc3b2f90b98e35e0bf0c4e5884f1571aee91. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLSB72201656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a7d01223eef3b3151888b486702dae84b3298191e14f72fd6307d54b575947. 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/DEY472175219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb650be8aecb9494f15caa26163739f7446ca5838cbc7c9cb0f91ea62d876d77. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLSB72200602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc938513e7a786edc1ab1de30a0b36d349a2385351088c7fbaa9f1b5ceb5b7e. 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/NLSB72200776.
Life is so balanced, even when we are not
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe103b8fbe39c2769c4cdedcfe7526ffa19c6a6c21147f853d49c4a8fe03f005. 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/NLSB72200790.