Kapten ( in the Swedish Army/Air Force, Lieutenant in the Navy) is a company grade officer rank. In the army/airforce, it ranks above lieutenant and below major. In the navy, it ranks above sub-lieute
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 0x9c1a9d69f9e1e872ae071bbd86a36f701f6a68bbdab6211f043697dd18f7aa20. 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/a177be17-d053-414d-9eb6-b5e41a407e4a.json and https://artists.proofprofile.net/proofs/artist/a177be17-d053-414d-9eb6-b5e41a407e4a.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 0x988e4cd0efd9ab3acfd7dab77dcfdbb7805dadd2a47aabfaa953ad1464febe86. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:30:45Z), 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/IDB772101235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4085e1c144f8c9a8a9dc0d002ad7eb77057c8623844010a480aec35ecf4d7ca7. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/IDB772101239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455e6b9db288d2d0ad8ad2be11f815eb98a161127225b4392d2aa102d9c3896e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IDB772101240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b09e2f60e1e3c8ecc3f33bcd333e91e9546c927a8f76f0e350c4e1d5f0ee0d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/IDB772101242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59acbd48c8e987df3cbfe55a7d92d9b950d617e8d5b712e7705b2e93b4e3dd3c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IDB772101245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cd7bd9b4b6188e76e8ceb4f0b9a87670c90f61c96f971513d648cb179997c4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/IDB772101295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3909daea1511e4199ef946dcb63a5503011d85e57458c76c2e319c46dda833c3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IDB772101297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790106844324a1c3d9c50b520366ca0ac8379de8026b5e8bee2fb4314dd987e7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/IDB772101299.