DOP, DoP or Dop may stand for: Science-related Data-oriented parsing Degree of parallelism Degree of polarization Delta-opioid receptor Dermo-optical perception Dilution of precision (naviga
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 0x32a3b2def4b43131e1f641115772caf3fc948cc6867232871760cddde14aaeb5. 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/5de4b1a9-63fa-45ed-8da5-c85ad9121bcd.json and https://artists.proofprofile.net/proofs/artist/5de4b1a9-63fa-45ed-8da5-c85ad9121bcd.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 0x7c1753c10cdc0de5fa5896237492ce69ae085c4d6399887a50ffb5e6c500db68. 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/TCAGB2261583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2123bea3161faba9451581b6b363d2d1c92c2333fbc4849beb893ae4dec49584. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFK2151564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8bd5344af1c562de8d640bc5757ecd4f5f54d30522ba9f7314ff385a470fc7. 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/TCAFF2062106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5875cc34b9d77a90b784fc343a2d7ae0e58eef705ac409c17f6b586ca553a565. 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/TCAFE2008058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57b31569b42e22945d0c0179d4fa231497a5381daaae82b6860a3e68dcb2a69. 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/TCAGD2266423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd509a6d1729c84ab7f0feeed8225442fd26eda8909393c8a7f174acb659e3e2. 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/TCAFJ2142916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a63dedeb7a8366bd09b658df4134f11d3de444f8a8ae279eedef767d8edcfc. 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/QZFZ52103804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2533c743e8cd57221a36f16673f3381fc7391123162b200874bb02fcc60eb732. 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/TCAFF2016056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26bfab8e29e0d8857141229f1e7208ef135589730267b8e33d958df5dd872b5. 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/TCAEX2021213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b1190825739bf2db540372ae3f6da847fef72d6f9c28ea9d7e788aaa43f26b. 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/TCAEW2010782.