Vinko "Vice" Vukov (3 August 1936 – 24 September 2008) was a Croatian singer and politician. Biography Vukov was born in Šibenik. In 1959, he achieved instant fame by winning the Opatija Music Festiv
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 0xe0b0848869dfc20797675f2a1651f88d678e2077c9ed2497bd821fbf64b55e4a. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e228bbc-436a-4f6a-b1b0-c2d5e0ccab1d.json and https://artists.proofprofile.net/proofs/artist/7e228bbc-436a-4f6a-b1b0-c2d5e0ccab1d.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 0xd055335e66344ffff138df7bf47663a3d7d925891c0185c4301bfb79473db731. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/HRA040819069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333b7919d03c08f6da6871de8b4c56c5f2117c6da0d7d67b295da41b2f126ba5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HRA040819073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2c86a455500d148503982f21d2fce7233c23cfd59dc9410cce04c8c666af8f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:46:25Z), 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/HRA040819076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1d2ed00788d2d3e879d4ced2a28d0ecee85d22d608138dd388329728ffd7a2. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/HRA047019070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3349ddac72de53a1d41845bb95171641f9006e0b13ae78edc9ed5eee291ee732. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HRA047119074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acc026b21cf77e2c53b2bba0247430167ae74311c0bc951bc1135d684b9a309. 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/HRA049430778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80e6f236246d26deafd5d9c04c54204f8150fcceb3552e49bb19ec9d4b7c06f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HRA040642436.
Tamburaški Spomenar - 120 Originalnih Hitova
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0aa1c5cfb7032af288f64121452567b01de8d2f9a286b3293ea35302028906. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/HRA040828009.