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 0x233c9b40da714a42ed8ca7b0454f98a17336631fa4ab67f9de54280949d91ff0. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8106ad5e-0c27-44f8-bc17-7999a5ec81b8.json and https://artists.proofprofile.net/proofs/artist/8106ad5e-0c27-44f8-bc17-7999a5ec81b8.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 0x0c7c6f6b4bdb53b6d3824d5a7df70447f0bb86d5edd2f7660062b351a4e452aa. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/JPV342200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3299504411f8e54053eaed60a4ca3224e9412b52c5cbed5cb5799f243df3a4cb. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:53:36Z), 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/JPV342200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1164c085c6355510c9201d077b20bd7b77b65cd4b61e40d4f057be65105bfb2b. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/JPPO02205184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524acf2caeaa5dbb4b4c734de42f7a7f3a7588c4ed61ca4e3c7823949f94f1a5. 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/JPPO02205185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaf68a54ac631dce65bbadc7a7d563fb0eaaf397385b863506d587dbd53f7ec. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:00:20Z), 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/JPPO02205186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8cb7fb1409d4f99c4cb523acedf8b933cf2f41775057d74417e244382d9655. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPPO02205187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d51ac5ec1eaf389fd0ed0c47aba874ce65a96be4f7362766f0e9c746dbd207b. 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/JPPO02205189.