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 0xddd257f58ef6e02641044c18b68e694556a44db179d4f37942f49538fac17e8d. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eac8bf26-513b-4af7-98b9-2b30962e8d8d.json and https://artists.proofprofile.net/proofs/artist/eac8bf26-513b-4af7-98b9-2b30962e8d8d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Rozpustyly kucheri divchata (Club Remix)
Boritesya poborete (Борітеся поборете [Club Remix])
Sonce nyzenko (Сонце низенько [Club Remix])
Boritesya poborete (Борітеся поборете [Ethno Techno Remix])
Sonce nyzenko (Сонце низенько [Ethno Techno])
Oy tam na hori (Ой там на горі [Club Remix])
Oy tam na hori (Ой там на горі [Ethno Techno])
Reve ta stogne Dnipr shyrokyi (Реве та стогне Дніпр широкий [Club Remix])
Reve ta stogne Dnipr shyrokyi (Реве та стогне Дніпр широкий [Ethno Techno])
Nese Halia vodu (Несе Галя воду [Club Remix])
Contra spem spero! (Без надії сподіваюсь [Club Remix])
Nese Halia vodu (Несе Галя воду [Ethno Techno])
Kosiv batko, kosiv ya (Косив батько, косив я [Ethno Techno])
Kosiv batko, kosiv ya - Косив батько, косив я [Ethno Techno]
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 0x4f89a0e2a097156aca57283009b635ad4fa4a2b1d3b18576b14612fbc849ff83. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7X2513538 — a six-check JSON result.
Kosiv batko, kosiv ya (Косив батько, косив я [Club Remix])
Nich yaka misyachna (Ніч яка місячна [Ethno Techno])
Nich yaka misyachna - Ніч яка місячна [Ethno Techno]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe482f56e0400f563599345eb3307cdc22707aafc7dc642fb9c2c1b49c76c52fe. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3EX2566278 — a six-check JSON result.
Nich yaka misyachna (Ніч яка місячна [Club Remix])
Zore moya vechirnyaya (Зоре моя вечірняя [Club Remix])
Zore moya vechirnyaya - Зоре моя вечірняя [Club Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268a86990c68037f1bb777b7f35800eb082cb334464018760830b1c767c6aa97. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3EY2531895 — a six-check JSON result.
Bila mene maty (Била мене мати [Club Remix])
Bila mene maty - Била мене мати [Club Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1fcbff137ee82fbe45f201b46908b5eeaf45c3a5a6677d42da237cdc2b5afe. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7U2587698 — a six-check JSON result.
Yakby v lisi hryby ne rodyly (Якби в лісі гриби не родили [Ethno Techno])
Yakby v lisi hryby ne rodyly - Якби в лісі гриби не родили [Ethno Techno]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cfcec7c7e05f0ac9df3ba1badcf79bb71b532ec3725d96b92f9cfced4d23c8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F22541682 — a six-check JSON result.
Misyats na nebi (Місяць на небі [Club Remix])
Misyats na nebi - Місяць на небі [Club Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa0eda6937f7f1cf0e8a268e6060d5fe715429dbcc02673cfb8cc9337dd83c6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F22546397 — a six-check JSON result.
Sontse hriye, viter viye (Сонце гріє, вітер віє [Ethno Techno])
Meni odnakovo, chy budu (Мені однаково, чи буду [Club Remix])
Meni odnakovo, chy budu - Мені однаково, чи буду [Club Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5467bf22c3bf44be1e81828410a2da2206d3a7fcc108a1fb0ad9d5fb9f099b9e. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7U2591784 — a six-check JSON result.
Sontse hriye, viter viye (Сонце гріє, вітер віє [Club Remix])
Sontse hriye, viter viye - Сонце гріє, вітер віє [Club Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff01b39567b654c91674d1ebfffd8dd01dbf030110a2623ab59afe13164f5e6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7U2591702 — a six-check JSON result.
Ukraina – moya lyubov (Україна - моя любов [Club Remix])
Ukraina – moya lyubov - Україна - моя любов [Club Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30da70abd51d6205f55f8f68a627d6002bb9fd6fe4d586172f56c12e7028c732. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F52500265 — a six-check JSON result.
Oy u hayu pry Dunayu (Ой у гаю при Дунаю [Club Remix])
Oy u hayu pry Dunayu - Ой у гаю при Дунаю [Club Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5f78b338db217ec49ccadb3a0004964fbb41b10bcf25e6c1491a62c09b3d78. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F32508804 — a six-check JSON result.
Svitaie, krai neba palaie (Світає, край неба палає [Club Remix])
Svitaie, krai neba palaie - Світає, край неба палає [Club Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd8d0eee64af8c5c45f9cba5743f42cf335be5131d01f219f1a8f27259cd742. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F52558276 — a six-check JSON result.
Svitaie, krai neba palaie (Світає, край неба палає [Electronic Remix])
Svitaie, krai neba palaie (Світає, край неба палає [Ethno Techno])
Sadok vyshnevyy kolo khaty (Садок вишневий коло хати [Club Remix])
Oi ne khody Hrytsiu (Ой не ходи Грицю [Ethno Techno])
Oi u vyshnevomu sadu (Ой у вишневому саду [Club Remix])
Oi u vyshnevomu sadu (Ой у вишневому саду [Ethno Techno])
Oi u vyshnevomu sadu - Ой у вишневому саду [Ethno Techno]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c18657e155284ddaf4a8098f64ab77f5f2da782be8cb179de0f92bd38e1be82. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3FC2564719 — a six-check JSON result.
Po dibrovi viter viye (По діброві вітер віє [Ethno Techno])
Po dibrovi viter viye (По діброві вітер віє [Club Remix])
Hey, sokoly (Гей, соколи [Ethno Techno])
Hey, sokoly - Гей, соколи [Ethno Techno]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef574ca191c8155026e43c7868eb0299cf4c57591ea11843c7984057183cfb79. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3FG2572398 — a six-check JSON result.
Skriz' plach, i stohin, i rydannya (Скрізь плач, і стогін, і ридання [Ethno Techno])
Skriz' plach, i stohin, i rydannya - Скрізь плач, і стогін, і ридання [Ethno Techno]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc375f6b97dbb6b70d535d8827abe43f3e57deff4710fb471fd197d4fbfbe8f5d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6E62505833 — a six-check JSON result.
Oy na hori dva dubky (Ой на горі два дубки [Ethno Techno])
Nichka tykha i temna bula (Нічка тиха і темна була [Club Remix])
Nichka tykha i temna bula (Нічка тиха і темна була [Ethno Techno])
Yak by meni syvyy kin' (Як би мені сивий кінь [Club Remix])