thumb|Valery Polyansky in May 2019 Valery Kuzmich Polyansky (Russian: Валерий Кузьмич Полянский; born April 19, 1949, in Moscow) is a Russian orchestral and choral conductor. He is a professor of the
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 0x6d62fb59b756bbeb97603254f36fa39c0a839825f770bd73ab1592391d11a57e. 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/dc079b2e-e8c1-4eae-a12b-7e0712a55ace.json and https://artists.proofprofile.net/proofs/artist/dc079b2e-e8c1-4eae-a12b-7e0712a55ace.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
All-Night Vigil, Op. 37: O come and worship
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 0x2d377089257b53b85cb28dc1b38fddf0209b4c4487f3a48e21218f30744fbd5f. 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/USB8U1521547.
All-Night Vigil, Op. 37: Psalm 103 (104), "O praise the Lord"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce2533b3db5353331b6783c534d43575144cd8300f0215b066e4c937785c77c. 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/USB8U1521548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b0ef70d7cf6b141f008d78fa48d0e19cfa7f992605e577c868f9a34593ac17. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USB8U1521552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95803af1bbfcb1deb286cb6ddbace180518546b3f096a6d77436ff749c0e83ca. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USB8U1521557.
All-Night Vigil, Op. 37: This day of salvation - Christ is risen from the dead - Thanksgiving to the mother of God
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2309a6ec98831734963ae51e8c7c1bd5bb2d014720adec4653dd37129a64b892. 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/USB8U1521558.
All-Night Vigil, Op. 37: Blessed is the man
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8c1833ba04d95c11ffdae8c01750f0443bc95abd0a7c826012455532d0b8d8. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USB8U1521549.
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
All-Night Vigil, Op. 37: Now lettest thou depart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32283436241547abf104d98f72d727312b56ee2b24b16f63511afe397bd94bfc. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USB8U1521550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae67486aa57e3af3c08d23314a0eaf9915a31b80b61e5fee9c09332cc1f194a1. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USB8U1521551.
All-Night Vigil, Op. 37: Psalm 134-135 (135-136), "O praise the name of the Lord"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9d43f99c8637a0b7c10166a6f8fb49fe6e6ae7872542dbfcd023ff3e193f2c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USB8U1521553.
All-Night Vigil, Op. 37: Blessed be the Lord
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ea61edc273c81b056fc8dd90d9f571a661f6580c1d136ebc1b15a38243a0c8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1521554.
All-Night Vigil, Op. 37: Christ's resurrection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43adfe5c3ccadbeef480f6ec92233bcc673c47d202c8c13d6712fd6ad7450380. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1521555.
All-Night Vigil, Op. 37: My soul doth magnify the Lord
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ab444ec7cd9be1927bb361a9fe8886efc977a482c1671c2dee0e946b4565d8. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1521556.
Romanian Folk Dances, Sz. 56 (Arr. for Violin & String Orchestra by Yuri Zhislin): No. 1, Jocul cu bâtă
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566dc0a1b555f51325c55a66138f82ad32b77ecf91bab26659e717382efe25ed. 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/GBYDS2400146.
Romanian Folk Dances, Sz. 56 (Arr. for Violin & String Orchestra by Yuri Zhislin): No. 3, Pe loc
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94392a5ad3ab0b3d91b1508b237ed3b0ee876639925326b4620ab139b3a70a4c. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBYDS2400148.