1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd027e3fc87b6e49f8bead9becece2b82e92b054bd75ab7ad3601462e0585696c. 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/78773d4b-8aa1-4ee0-b9ab-ff52e42a2825.json and https://artists.proofprofile.net/proofs/artist/78773d4b-8aa1-4ee0-b9ab-ff52e42a2825.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Úvod k LP Ivan Mládek uvádí Luďka Sobotu
Uvítání na druhé straně desky (k LP Ivan Mládek uvádí Luďka Sobotu)
Až Bude Mistrovství Světa V Ledním Hokeji
Im Lokal dort bei der Fähre (Restaurace U přívozu)
Das Mädchen aus der Supermarket (Děvče ze samoobsluhy)
Die Kuh im Milchgeschäft (Kráva v mlékárně)
Ivan Mládek zase uvádí Luďka Sobotu - Úvod (1)
Ivan Mládek zase uvádí Luďka Sobotu - Cestování
Ivan Mládek zase uvádí Luďka Sobotu - Úvod (2)
Ivan Mládek zase uvádí Luďka Sobotu - Vrátná dolina - lautr rovina
Ivan Mládek zase uvádí Luďka Sobotu - Úvod (3)
Ivan Mládek zase uvádí Luďka Sobotu - O mém otci a naší chatě
Ivan Mládek zase uvádí Luďka Sobotu - Úvod (4)
Ivan Mládek zase uvádí Luďka Sobotu - Nohejbal
Ivan Mládek zase uvádí Luďka Sobotu - Úvod (5)
Ivan Mládek zase uvádí Luďka Sobotu - Pohádka o perníkové chaloupce
Ivan Mládek zase uvádí Luďka Sobotu - Stará vojna
Ivan Mládek zase uvádí Luďka Sobotu - Úvod (7)
Ivan Mládek zase uvádí Luďka Sobotu - Jak strojit vánoční stromeček
Ivan Mládek zase uvádí Luďka Sobotu - Úvod (8)
Ivan Mládek zase uvádí Luďka Sobotu - Vánoce v Ďáblicích
Banjo, já se s tebou loučím (The Spider And The Fly)
Až bude mistrovství světa v ledním hokeji
{"copyright_id":"0x993adac714f3ad8d9c85cd826d03fa3cd728bdbcb33711b1ae1f2f8b443d085e","isrc":"CZA167600498","name":"Neopatrný Křeček","registered_at":"2026-06-19T10:08:41Z","spotify_id":"6BWJPefzkCNJmPNYmZ998k","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993adac714f3ad8d9c85cd826d03fa3cd728bdbcb33711b1ae1f2f8b443d085e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6BWJPefzkCNJmPNYmZ998k.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6BWJPefzkCNJmPNYmZ998k.
{"copyright_id":"0xc88a4d6f1a0508ef7dab07005706bcda4cafdab60f1527dd6a847996edd75be6","isrc":"CZA167600496","name":"Medvědi Nevědí","registered_at":"2026-06-17T23:21:53Z","spotify_id":"4PpJ2KMvvFPNkDOENQEifJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88a4d6f1a0508ef7dab07005706bcda4cafdab60f1527dd6a847996edd75be6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4PpJ2KMvvFPNkDOENQEifJ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4PpJ2KMvvFPNkDOENQEifJ.
Mládek: Zápisky šílencovy (Trilogie úterý, Moje rodina)
Zápisky šílencovy - Úterý - Cesta k tramvaji
Zápisky šílencovy - Úterý - V mléčné jídelně
Zápisky šílencovy - Úterý - Ve mzdové účtárně
Zápisky šílencovy - Úterý - Na sportovním plácku
Zápisky šílencovy - Úterý - Uložení ke spánku
{"copyright_id":"0xc257f7fd22f93ffb29b17ff267e4c7d4b4dfe726d6a44e6ea54b0ec3a340f5df","isrc":"CZA167900826","name":"Švadlenka Madlenka","registered_at":"2026-06-21T23:08:11Z","spotify_id":"7zrFquZFs8rZcI0Yx8gQVv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc257f7fd22f93ffb29b17ff267e4c7d4b4dfe726d6a44e6ea54b0ec3a340f5df. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7zrFquZFs8rZcI0Yx8gQVv.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7zrFquZFs8rZcI0Yx8gQVv.
Jožin Z Bažin A Dalších 76 Písní - Zlatá Kolekce
Jožin z bažin a dalších 80 písní - Zlatá kolekce
Malíř olejových obrázků - Malíř olejových obrázků
Až bude mistrovství světa V ledním hokeji
Písničky pro veselé děti a jejich rodiče
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0378ad37486c6b3681ea44a79bc3bd4a84f01615c65ece837118075e2756fd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1ccQ4UtLp2VE5hcKJ1AILd.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1ccQ4UtLp2VE5hcKJ1AILd.
{"copyright_id":"0xc88a4d6f1a0508ef7dab07005706bcda4cafdab60f1527dd6a847996edd75be6","isrc":"CZA167600496","name":"Medvědi Nevědí","registered_at":"2026-06-17T23:21:53Z","spotify_id":"7BImpuT6UiPVlCvMqbZaLE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88a4d6f1a0508ef7dab07005706bcda4cafdab60f1527dd6a847996edd75be6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7BImpuT6UiPVlCvMqbZaLE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7BImpuT6UiPVlCvMqbZaLE.
{"copyright_id":"0x993adac714f3ad8d9c85cd826d03fa3cd728bdbcb33711b1ae1f2f8b443d085e","isrc":"CZA167600498","name":"Neopatrný Křeček","registered_at":"2026-06-19T10:08:41Z","spotify_id":"6nQnhx2xOA8Q0N2LwOjt7M","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993adac714f3ad8d9c85cd826d03fa3cd728bdbcb33711b1ae1f2f8b443d085e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6nQnhx2xOA8Q0N2LwOjt7M.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6nQnhx2xOA8Q0N2LwOjt7M.
{"copyright_id":"0x53bfe06340aac6bca699f7614c0c2be5e4c52357e14dca8de0b4744812f20d37","isrc":"CZUM70800443","name":"Ruty- Suty Arizona, Texas","registered_at":"2026-06-18T02:56:55Z","spotify_id":"0BwgM8qSnbwO3cafrzjcQT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bfe06340aac6bca699f7614c0c2be5e4c52357e14dca8de0b4744812f20d37. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0BwgM8qSnbwO3cafrzjcQT.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0BwgM8qSnbwO3cafrzjcQT.
100 Let S Českou Písničkou Aneb Populární Interpreti Zpívají Dobové Šlágry