Troika or troyka (from Russian тройка, meaning 'a set of three' (trine, trio) or the digit '3') may refer to: Troika (driving), a traditional Russian three-horse harness Politics Triumvirate, a pol
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 0x3d8ce3f64f3fda3f05e0c2d9f996d224104206a53c886a50ff1f38dbdccf1aa1. 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/d40b8a89-8ec2-46d8-ac02-56bbb5d675c5.json and https://artists.proofprofile.net/proofs/artist/d40b8a89-8ec2-46d8-ac02-56bbb5d675c5.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 0x6838d0156cbebd31b0ed4911c1dda58d9eb07b9e8dcc8ae55ab7ea562df2f814. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USNA19611702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9e737499105ba669c0a37843971f91b5f502f34340daf3f718609e61d9c218. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USNA19611703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2edd7bf9e35605668065b74d2a0b4713ed679cda9b9a14584de77d634038667. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USNA19611704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8c07dea6a85fa6ee5ca2bbf9be8fa07af87734ca970cace150cedee5d681b7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USNA19711683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a75d0590a135f5fb17d24a7d5f094808beef5f6f9aa33bc02a321809858f32c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USNA19711684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e92c11d49121f891bfb146344f89fdfa7e0c01b1014a88a66164921b89ce23. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USNA19711685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a1a140c982abad2d07c851a77b796e9b915cd9c595873c058339f1e02e36ab. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/USNA19916011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd369cb84855a48282577aa44fa864035b1ac1c101a1734366f171101b927b1b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USNA19916012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779a9ccc8c8463ddd65d166e444d199317097e98fd02422f0de888d7b98a2f07. 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/USNA19916013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ada802952fcb56e189cd7199c0c94ff411d7f6a6e79594e94b098552a277c36. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:00:44Z), 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/USNA19916014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568d79c6566eef954bcecd9d8b5cc32c3487250fffd6c34531ebf98a81b6da82. 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/USNA19916016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daf1e82baee3e65e0d0791ff17be5935b410460f6d9887b6d34cc41ae8e3885. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USNA10017115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f98b91ce8a85d31c664ff286c6f19fc4057c083a7d65b7200fcbde38a766cb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USNA10218725.