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 0x02b05e0fffa34bbd2e61a2d0344e471e6b11b365cde114d8574abf5e0f7860dd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19e250f3-d058-47a0-9060-8bed0281ae61.json and https://artists.proofprofile.net/proofs/artist/19e250f3-d058-47a0-9060-8bed0281ae61.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 0xdb910495ee38198bd09071e8989506f70af9792b1fb586656c030c5698d7819b. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:09:14Z), 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/CZA167700685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0b6db933aaf7987377fed905a0a4360c5eb80cd544993bd7aec1500c2ed93e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CZA168000813.
Předehra - Páni, Dámy / Počkej, Já Povím / Sedlák, Sedlák - Furiant / Alou Páni Muzikanti/Počkej Holka
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce309df6ec8adef4f7cce9b6087d828f37b0a896e5bbea2feea347c2823afcc. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/CZA160705564.
Komínku, Komínku / Furiant / Obkročák / Polka
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa7106603a7ef789cf12bc89a43b5b304a2731d882d039d2f6dfb83e871c6ec. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:44:17Z), 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/CZA160705565.
Rejdovák / Kdybys Byl Jeníčku / Kalamajka
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa879f372663a55263d76251fdf40f6d28fb17ed1f53eb50c0b63aff65e653c95. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:49:34Z), 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/CZA160705566.
Sousedská / Furiant / Však Nám Tak Nebude / Hezká Jsi Andulko
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d66cbbbc667bf720b75c6a08411d90865c73e788879e12291f04e877018776e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CZA160705567.
Sivá Holubičko / Tetka Kam Jdete / Měl Jsem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361f090524b6c84b4305f68f482881e51c94271d3a6aacbcb241befb9c7102c4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CZA160705568.
Malení Malení / Šel Bych K Vám / Šly Panenky
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61333c07d061c2bd9abcade63a25f2da69b258d41e7cc97a66991088d241bb5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:09:21Z), 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/CZA160705569.
Rostó, Rostó / Tetka Kam Jdete / Trnaveček
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e855233f0aeb0b2abb3e9c8faa27775f6aad7f310355b7cfd42edc99c81b12. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CZA160705570.
Šly Panenky / Ztratila Jsem / Pásla Husy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddcd6158ffeb448684ae924e958d946729eb818439cbc91e2770b43b3fab433. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:42:13Z), 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/CZA160705571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0425f7f102f4465a46c3f485c724eb0d586b573dd55ac559d145d1deb5eccc. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CZA167500607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87bd37123a30b81d6c2a5e010ffb782dd2094457c060e423958f41f0ee3f3d0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CZA167500608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb739b5555c26f9515df79735df3245e471c55ab083f93a463837a884eadffede. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CZA160410553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a30d1107af290744215b38c95ce00775d16e46fdcd1d4df2e6f27a2293bb6a3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CZA167600523.
Moravanka 1972-1992: Písničky, které udělaly Moravanku
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eae577081a76bbccf5305b437456a319eb76d7ab861b37e0390b1126d208e42. 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/CZL209600238.
Moravanka: Die schönsten instrumental Hits der Volksmusik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7bfa8ecd6186ae374e286a4c0d1336d53528ac9aefe64ec2ab5d3179ab81f0. 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/CZA167700492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f6779dc556b6825bd0079395c629a2a1be0c0024ef00b1a3fb5334d3d3d21. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CZA160606552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edeef8d92606d38ab881e91a52ca6772f027fd7ea1eae0e78f53ceeb7d70a1f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:42:59Z), 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/CZA167600526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9447ced19560832f278000d0103ac7463dcea0f5e421d69db61b780b1efc8d07. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CZA160606615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69bcb16b4fbc920d35cd62ad4149e5d1d90d930cb32bf20786da7f39cff2597. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CZA167600522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0d075f6c8ea23f355601a9640e21df4a89309aca248ffda5fd08278ddc7918. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CZA167500837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ef1752e2abf9400880b73259e2d1dfc8461688d6095c040e25bd5d211b64e0. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/CZA167500612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb910495ee38198bd09071e8989506f70af9792b1fb586656c030c5698d7819b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CZA167700685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56e56e71a399639615a8708d544450a6e9768b66d0017381241b81b425fc313. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/CZA160606663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b21dcf5d0b6391eefc4889e40eb89c19968bdd43c8fd8286871c7200c12176. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CZA160606723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75dd3c69759fb8ac9de1129cc5d24d561fdb287454895ac0da2f659bc712f481. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CZA160410554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe746a7aefca14b0e679d2948d1c2cb487bba2ce0bfaed38bd9105526b2e491e2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CZA168800923.
Instrumentální galakoncert (pův.LP+2bonusy)
Instrumentální Galakoncert (Bonus Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c69d02c0c089b341b4f59f01b082a206ce4a207ac5ea948dfcb74b3f577899. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/CZA160410557.