Patricia Burda Janečková (18 June 1998 – 1 October 2023) was a Slovak coloratura soprano. At the age of 12, she was the winner of the Czech–Slovak television show in November 2010 and gained interna
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 0xa0c62fe012d8afdd572a1eda34b2288f71f7a4db9fe42817eb1145a25bf5d949. 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/1aebf90f-0c57-4c56-9ee1-56caefaf5560.json and https://artists.proofprofile.net/proofs/artist/1aebf90f-0c57-4c56-9ee1-56caefaf5560.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chevalier (Original Motion Picture Soundtrack)
Violin Concerto in G Major, Op. 8, No. 2: I. Allegro
Joseph Boulogne Chevalier de Saint-Georges
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 0xa2823cceba4d3c2097199601ecb93fc3ddc92a7dc9f976e7e5563a98c5acc578. 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/USHR12345599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdceec931d0df5eed8a2998ba87823c266235ad0ec63d2c79bbb3fe1dec62f76d. 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/USHR12345699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ff1cccd4f78f385d445274243d93566577eec8d20e1a61f775b2e3a9aeb18e. 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/USHR12345700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb0968b3e08c759f3e79eb789d0891408a3ed4ada3a6578c9349b6b7d075f8b. 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/USHR12345701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02b5a172bbd95108dbe3264f241eec4c1cbf8fcab61a1f99b4b16c6d663f335. 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/USHR12345702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff220199b6d8819c1e5af6a1564812d2d323d6fe8374145c6fedab43ef26848. 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/USHR12345703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d98d28378e38a87678ef2febd97110a3c1c0fc436b80fdced1acf8838bf04a2. 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/USHR12345704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001795e7d162da91d3cef67f87349630b6abd268a1117dc416c31ed64dd595c4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHR12345705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f42d8696dd44efd5c99461642445c2ab7608c7fdb3f46a7ea31034bed5aa061. 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/USHR12345706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe105509346bf7b971c8e12e88be8bd817daaa2311248ea72d1c790c3b3adb0d0. 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/USHR12345707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0aa9002a1f4500da35a343c34fe16bbeae4ef026559f5febe2b30e06ec04c6. 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/USHR12345708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f43f9bb2bf25d6cadcdee4851f261d1755a3215a17c7d055d843935fac9465. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:41:33Z), 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/USHR12345709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d520fea101da108b107654435d0af56b6451ec23f2ad54c8a45fc94edb00eca. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:57:25Z), 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/USHR12345710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d9042563b33d3f501e255ad92c4e8637f91219bb6c63ff05be61e07174564a. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USHR12345711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bde35887f494e79a1345b180f46bc81e284f2a21b14195506f8df839e824d1. 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/USHR12345715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fbd766c5dbb02260c537c3cb153b5e936d96b1a006611ceb5f709559879bad. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USHR12345716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e396bc4bd52147be26f21fdce3660f74d41de6c942b5c12c576f94011d5a30c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USHR12345720.
Violin Concerto in G Major, Op. 8, No. 2: I: Allegro (Quartet Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b54838cd6cb405fa68880e8b45f1767de5b04c1a447b435122497cff4cfccc8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:17:44Z), 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/USHR12345723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ed84ca562edd3e5e7f3370b156f904ef8113fc0c8f07b7c56d2882adeaf155. 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/CZH671101333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b7b46155a9d8a41106bb9e8f0c6f16f5d84ae67728118a1743be2ffac98bd7. 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/CZH671102333.
La Pastorella dell'Alpi (Tirolese) - Soirées musicales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b85803be4538eb532479d447fc3f8921073412b36d5fb786447788069b03967. 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/CZH671103333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fa735c2835f778637d4b9be3b374f258a31dc8316e3e917f9822677f8bc10f. 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/CZH671104333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45af6e1da3f462d251a6ee8741ec6fc8f8a3c5e66d603f661ec87533c57f143b. 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/CZH671105333.
Panis angelicus - Messe à trois voix, Op. 12
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdf43132ea6f287f7b0ee43fe50d33e4cc9f27fc72c377ba0219a6d6afc27ff. 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/CZH671106333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e8a09a2c2a99282a1161c47d80dba9cf5cc171b86b305c334717c9e598139f. 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/CZH671107333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b86b5cdc61d851d03b6d5deda626bf4d0cdbe811eac65e9fa8a6dad5d63abf5. 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/CZH671108333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa890d1416e117d7a675f7765e874a726ac346aeaee19a21e1418bcb550210a9. 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/CZH671109333.
Kdyz mne stará matka - Zigeunerlieder, Op. 55
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8750d13711ce3cf46b320dd5c3dfc6e19a5fa403f7d4fce966187ca840a2034. 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/CZH671110333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904c9f66e7ec94acf03ade35ece7c60c4025287fda82bdfca0add8c33a422337. 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/CZH671111333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699520d0948b027a5254b95ac9b541fb90185c16c9862f7c73c35481729e9b6d. 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/CZH671112333.
Vtedy na západe - Spiel mir das Lied vom Tod
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e4dcff71578c7c2fd297c65062f2f48bd315dff095aae695bfb1de45bed675. 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/CZH671113333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ed6389f44f08a40021ba45cdbabde17434d9c18d5bbbaa980330c256d468b3. 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/SKG872101306.
Václav Trojan: Sen noci svatojánské (Hudba z loutkového filmu Jiřího Trnky)