Vera Svoboda (15 August 1936 – 1 April 2024) was a Croatian singer of popular music, known by the nickname "Queen of tamburica music". She was among the most popular female popular music singers in SF
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02a525b2d6dd844df17288e502bdfb885cc49b7fe953638d4a2f0ffddd6f672. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/500f3cec-efad-4286-8bc2-afdb4b4bff19.json and https://artists.proofprofile.net/proofs/artist/500f3cec-efad-4286-8bc2-afdb4b4bff19.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Glazbeni Festival Stepinčeva Katedrala '91
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576760fdf672e9d96b953881b1b8c805b04291109f40a589eb56c51dc5c41cd8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/HRA049125738.
Tamburaški Spomenar - 120 Originalnih Hitova
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb16af45f4e046b023d70d01694506a59863a2f1a9eb118be13cd21691b1e461. 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/HRA040632331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb583deb7e3cc4019ad380028d36e8c8714855ccb0dfa6069515ef25c2be90438. 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/HRA041266608.
50 Originalnih Pjesama: Moja Domovina - Najljepše Domoljubne Pjesme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b30d83d7f0394aeaf26740fff6541737e7a63b4b6cefa6e046c3b443b05395. 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/HRA047014845.
Zlatne Žice Slavonije,Požega 1969.-2006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5be80beaae15cbb8299141f8197cb45ce1ce7bdf3bc641caa45af2b5e80c6c5. 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/HRA040632275.
Brodfest - 15 Godina S Vama - Domovini S Ljubavlju
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dd6844d25665931f3ce73abb12519d0179731d1e33b91790564b0bc53556ef. 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/HRA041479767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44b26af053d86f9e37996d208146afeb2a957be6c31c50d8e16d9b6150a44e0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HRA047210500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25d4efee1e9f0fecc5636f27357cfd8c4b86a5215f6e65465438ccede9c1e15. 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/HRA047216332.
Koliko Te Ljubim - Romanse I Stare Grads
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a5d3df04c1755e9de4dd4bac7ede9ea86f66e62375b6fb6f39d7e74b8251a0. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/HRA040961433.