Mykola Mykolayovych Hobdych (born March 28, 1961) is a Ukrainian choral conductor, known for being the founder and director of the Kyiv Chamber Choir.Микола Гобдич (Mykola Hobdych) Profile on parafia.
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 0x1e7cf86d71cdb11e346388017dd17d977920c9be5f9f9e41755d20446323cb90. 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/e11e246e-948c-4a3d-8615-a0e8447cece6.json and https://artists.proofprofile.net/proofs/artist/e11e246e-948c-4a3d-8615-a0e8447cece6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Maidan 2014 / Cycle I: I. National Anthem
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 0x970d7d86cf744a59e26ec4c2d00f7420a699e27b0db9e85150f9aeac85b09a2a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331635901 — a six-check JSON result.
Maidan 2014 / Cycle I: II. And Glory, Mountains Blue, to You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804fa516579c24ac8c3f9893192c6019cbac0be4f5841ce5cc3b0e8b36a0d131. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331635902 — a six-check JSON result.
Maidan 2014 / Cycle I: III. Give Rest, O Christ, to Thy Servant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14eed8e75e2af946187aa8fcb527707c303ca270e431fe79a6002fd55f18d46e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331635903 — a six-check JSON result.
Maidan 2014 / Cycle II: I. National Anthem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c5271e367bbb7c0d89d80ec98fcc1d94fa2e3bebf1cebf88835529db862343. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331635904 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7288273d6f1acbbb74b9fc099957a1e6027636a6e63d159d81fd948d10e61a1. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331635905 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dfe712308acab0ee1dff5e197a1439d6056542d7b5b94df8b9542e6189f0d3. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEB331635906 — a six-check JSON result.
Maidan 2014 / Cycle III: I. National Anthem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a6c1e0003b52268e28287f99fd0400f1bdf45025b4e8856ea660cb7b08e0c5. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/DEB331635907 — a six-check JSON result.
Maidan 2014 / Cycle III: II. The Lord’s Prayer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f36e709e25dfe1f40c95c29340d03293f6d9e2d583d9c1db58a4e2adac4265e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331635908 — a six-check JSON result.
Maidan 2014 / Cycle III: III. Requiem aeternam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fdbbdf33c93c6c6924b896c4d0835ef6e8ccc7f38bc17d958b922411359578. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/DEB331635909 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92a2a53cd4143c25858350a152426f508d7955b7a33ee77de06c6aa5862faf9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331635910 — a six-check JSON result.
Maidan 2014 / Cycle IV: I. National Anthem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0cf2b2b673b8d102199f24c45a69654fbaf1853cdec726d7e73936367a8cd0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331635911 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbb2dd3d1c0eaa270277e4a8fa8d7ccedca0fd6eada8feb5f0154f9092ba8f4. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/DEB331635912 — a six-check JSON result.
Maidan 2014 / Cycle IV: III. Prayer for Ukraine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c427d1c2b3cb85c601c094e2e90c5d6026be396fe64c5cdb8e1d9915023b53. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331635913 — a six-check JSON result.
Maidan 2014 / Cycle IV: IV. National Anthem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8df0925989e584fe4f0538a47fe4897d3bbef0ff4798c3aa2463b0af76eef18. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331635914 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9ce20be3058af5753c3c28c69b4df0688794ba03fd899a87012255c60d0535. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331635915 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccd467c3409f97f5b3f0b133cb57d3bc9cee39ccd7e16558a9f1aa052beef27. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEB331635916 — a six-check JSON result.
Four Songs: II. On Earth There is Fortune
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb157e3e4b7e075d81f3f4f2181e1ff5e03e047e490fb81673e878e618753f9d6. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/DEB331635917 — a six-check JSON result.
Four Songs: III. A Cherry Orchard by the House
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb32738b7785e0b51f643d21c4fd4a45cbd11d0d0801f8c0dbc716245cc000aa. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331635918 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b56f798b864b9feb21b18f660c229c7624cbd697f0b6be969673e43d26b98f8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331635920 — a six-check JSON result.
Romuald Twardowski - Liturgy of St John Chrysostom
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d8ee520f8cb115bebcbfb2e81962ef8bb4e72261a77c345b44fa6e68092d6a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330827901 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2d2267e92ec7927134b0e3700fc0e6fd7dad4f912721ef965349822fbceb05. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330827902 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7136ae440fb5beda9a5f9284e73ca99c6e5ee1a61c03d69df60d689b9b6e93. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEB330827903 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacceec6bee65df88a11fa1b726ea6eb5f5ec767488953d573b1c62fdc5a7a42. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEB330827907 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f2bf368183575d865b1a23701387445180bda4402eab7a69f7a9230bf955f3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330611701 — a six-check JSON result.
Liturgical Chants: 2. Four Spiritual Songs: Christmas Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e3e2e5782c526ecd4ea89c4d58c4f0cc0f736bff0024ef48f3512f4c8297f3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330611702 — a six-check JSON result.
Tchaikovsky: Liturgy of St. John Chrysostom, Op. 41
Liturgy of St. John Chrysostom, Op. 41: VII. Cherubikon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67d5d4695ba5427ed4c1e92614787dfd5c9643b4c7318ad5029a1600eb6d774. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/HKI199609707 — a six-check JSON result.
Silvestrov: Maidan 2014 / Cycle IV: II. Elegy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbb2dd3d1c0eaa270277e4a8fa8d7ccedca0fd6eada8feb5f0154f9092ba8f4. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEB331635912 — a six-check JSON result.
Silvestrov: Maidan 2014 / Cycle I: III. Give Rest, O Christ, to Thy Servant
The Nutcracker, Act II: Dance of Sugar Plum Fairy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2951012faf8fa25c2a8106083adcb0c6f371e6e2af66b38973b949d85727a417. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199339803 — a six-check JSON result.