Kvitka Cisyk (April 4, 1953The Myth of Kvitka, The Ukrainian Week (11 April 2013) – March 29, 1998, born Kvitoslava-Orysia Cisyk; also known as Kacey Cisyk) was an American coloratura soprano of Ukrai
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 0x9e90bc54604d7895449d6a76c4b9d1500f15f3e977a878aabe1a317de7d555d4. 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/c8d29c77-c950-424d-a9e5-5d8b7372ee2a.json and https://artists.proofprofile.net/proofs/artist/c8d29c77-c950-424d-a9e5-5d8b7372ee2a.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 0xc84d0c2c5bc4b2e9a7f646c0178ed098bc3f4b7951f4e80f54aa6a077306a37f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:05Z), 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/USHM81347125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23445e002533e2b76e7570d64c3440ed5bfd68309dc208783969d7e0bb32c902. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USHM81347127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1c14556ee6f2113a07adfdf5f51942242471c7355ef42b791b3cb6027ea193. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM81347128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf170ea494e5016593259f7f5a4cca083b6f806d4880ee6e5bf78ef3fca0351a9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM81347130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90cb227259b5a92ef7026b61bba4ba811861404b2e82dffd41d6a4545e034f0. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:20:54Z), 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/USHM81347131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbaeb94ad5b29e5479d7c0fca760c964894ad97e86d4b7ccd1c13089191db6c. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/USHM81347132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5528a81b6e9787eac98e2f6f6c3923de3282d60389c3c76385015d0682809480. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM81347133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b4f7e36cfd61d7f3eef24dab4d950a0ff7ecfd2878ee704dd866e54cdc7dd9. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:22:21Z), 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/USHM81347135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde504122c7c5ff13cda98b1a78011a1f773ad085f9e09ed3921d10626f42e5d5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:44:05Z), 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/USHM81347136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94beeb48411d6e71627110d671cf07f98ef5a06386941d3681bb803e9e783f39. 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/USHM81347137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d5bcc8a606654273cc502c54fe4a62072ae963a28e8e0481730a0cfe9724b1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM81347138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf313fa580acf17de289a3c7a4aff6b60f437ba7c0feefe992311b0af04c665c7. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T12:59:31Z), 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/USHM81347139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326c2d152a7436fcd3d96cde4ef4bfc54c98272139a40771fc77b5c547a1e2a1. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/USHM81347140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b8dc99b94247aa29eeb307a2055a66cb47b62845dc96b4eafc6ad7add6ceb3. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USHM81348385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad4ebe195998ea083e70db1e92a8e87df3700981e8b3264cd60c0c976ab70ff. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:49:46Z), 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/USHM81348386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc919876bd965f539f7ed307cbb813688443fe433988de1695b83534b29a8f04f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:02:39Z), 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/USHM81348387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a581a87f4a27a1e21d7b0b78da9e4f7644d21a98981db8814afa733d574473. 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/USHM81348389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9ea67c7f55a80c04bc7ec6f566d3e0468056906e6d8d30a53a4b8602683ef2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:05:09Z), 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/USHM81348392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f1d70b21296d0070051d1a329e6837775ffd6b8de22e9a89503419d12d2810. 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/USHM81348393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4b240dbe9e40f24f3988c8a85cb7e257c21eeb4756b6dc502a41ec062e7849. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USHM81348394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ff9da4159feeb06fc0303039d022440b3e235a65d2502abdedf5ae7a83010f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:01:57Z), 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/USHM81348395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a023623835d49306ce4b10148798a3eeb3f64f1c47cf651cedb47017b64bbd1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USHM81348396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27406f2e13b51576c1b8a1b97248be02740479b21b77c9fccdf9ca14f3f3b7d. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USHM81348397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137fc805465f5d8ab4627ba49637e23905ced82bc3d4f020e4cb7d5251b0ce72. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:38:59Z), 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/USDY42224029.