Yvonne Přenosilová (2 July 1947 – 11 September 2023) was a Czech singer, actress and radio and television presenter, mainly successful in the 1960s. Life and career Born in Prague from a Jewish Cze
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 0x0f618c8744fa73235b5826f0b1c2f404b90c3b4555a5ccf1bc658411d866fd45. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1dbf05a-5513-4c6e-9e1d-67b9d854cea4.json and https://artists.proofprofile.net/proofs/artist/d1dbf05a-5513-4c6e-9e1d-67b9d854cea4.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 0x74a1bcc0418f089c44772e19a3013fd3f9503c868d8f953f657b4651bf5d0083. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CZA166700242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f5f22afd90008af5181399d8a24cd74fa19c73b7f695d65ff7c58f9f18f751. 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/CZA166800393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca5b527637f6833ee0fea41a2cc86670342c5985b88af08079b5173d95b81e5. 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/CZA166500223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e584de3a416b94ca1fb949cd70c915543facfb8ed1a201506a934afabd5336. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CZA166600326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5feba943f0f97ee0720bf32667c57769fbe516e17d12e5f76c67825940a0170a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CZA166500189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6756e4c961a5f0c879fe2d1897929a50d8099854b29e0aff10ba7da83472728. 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/CZA166500139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fada2da67df61563c8ed0f2e77d0a69b65e58b3cc753d8187a88d89657c551. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CZA166500343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42d501852de468030ec0d25464f01a36812e371bc7a979062405a0e30b4da21. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CZA166600381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a1bcc0418f089c44772e19a3013fd3f9503c868d8f953f657b4651bf5d0083. 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/CZA166700242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc13d1723520aa76cfbbac8536b3ba86b224da9664fe19899fb4c1d2a516cfb4. 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/CZA166700336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ffa21ff6be6d797b1d33206b91fb9a2b20579812899b33b2487ed76655ce2e. 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/CZA166700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6628de92aa115b2759ce98ddef6b998c164061cb4855c5220dcbf8ad98cd66c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CZA166800389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31884ae3e5baa00e9c7c7b8ceb0147616fe1aca9c6b706f3df6cfa7746a2355. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CZA169300271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd693eb4d6c9060e7c0b97a7b7e954b64b400050fc16660c6bdca4388ebca8ace. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CZA161100823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f5f22afd90008af5181399d8a24cd74fa19c73b7f695d65ff7c58f9f18f751. 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/CZA166800393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0dbc1313039b693d3018d63b9e41450ea00b5ce8c38022671cad545992f574. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CZA129906010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2df444532ed0104ecc11a41afccf0be3cdceb631ad09a579cd547d704cc824. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CZUM71400513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1bf9268d360c66404ae37da751207df66d129687cf8f57c7ec0fe79d7be011. 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/CZUM71400530.
Krečmar: Album Když Jdou Na Mužskýho Léta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42d501852de468030ec0d25464f01a36812e371bc7a979062405a0e30b4da21. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CZA166600381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5feba943f0f97ee0720bf32667c57769fbe516e17d12e5f76c67825940a0170a. 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/CZA166500189.