Jaroslav Navrátil may refer to: Jaroslav Navrátil (tennis) (born 1957), former tennis player from Czechoslovakia Jaroslav Navrátil (footballer) (born 1991), Czech footballer Jaroslav Navrátil (spo
The Best Of Ksč (Vybrané České Masové Písně Ve Vzorové Interpretaci)
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 0xff9e1ea9824f58a39b7d4e7a79144ed283388ac02c632dd39014d858df255f2b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CZA166100147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4746245d9f8caac764f8b5b5a6174aaedaae6c20ef8d280e1971e53f058a0f5. 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/CZA165600070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262b7d6b72d2c62a85180b08e285b4a299853bee1b9692853a7139d951c11420. 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/CZA165800086.