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 0x76ce524ccb69c724c5ef2bcd5fa32c9f6dfaa0cde445132490fb8111fb187c25. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43ee3202-b99f-4839-acb1-f289bb66390a.json and https://artists.proofprofile.net/proofs/artist/43ee3202-b99f-4839-acb1-f289bb66390a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Izhe Kheruvimi (Cherubic Hymn): No. 7. —
Bortniansky: I cried out to the Lord: Hymns and Choral Concertos
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 0xa12e9070c7ee2d061d782520c775afde53e7207dc03a39053e9e8a6f3a3bc4e5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKI191253001.
Sacred Concerto No. 15, "Priidite, vospoim lyudiye" (Come, let us praise in song, O people): II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e29dd986db869950d6ecec621436007ca6038c7edd7909d9a78ec77f2e56acc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKI191253003.
Sacred Concerto No. 21, "Zhiviy v pomoshchi Vishniaho" (He that dwelleth in the help of the Most High): IV. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724a5e6b1d5f2bf4d660599934813cb9ad4224e1beb106b9b923841ee102e3ff. 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/HKI191253008.
Sacred Concerto No. 6, "Slava vo vishnikh Bohu" (Glory to God in the highest): III. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae695254aa6092ef8bf0e5f64192275bf16632c4b8e1bd8a933ed3428b470fd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI191253018.
Sacred Concerto No. 15, "Priidite, vospoim lyudiye" (Come, let us praise in song, O people): I. Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb710448ddd55a102e1456c7353a72cf5b06a77e32a6847f8e6a8d6118901a744. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/HKI191253002.
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
Sacred Concerto No. 15, "Priidite, vospoim lyudiye" (Come, let us praise in song, O people): III. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6cf7e8c7b9ea5ed69a7b1d73eb79f62d6fa35cad8a19d6bf69d0476b997e22. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/HKI191253004.
Sacred Concerto No. 21, "Zhiviy v pomoshchi Vishniaho" (He that dwelleth in the help of the Most High): I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97da0d110c856a3864a282325c15139be618f033a186330d2aa49c722409e89b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191253005.
Sacred Concerto No. 21, "Zhiviy v pomoshchi Vishniaho" (He that dwelleth in the help of the Most High): II. Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0578d2e049514ea2340acd68d200eaff8ab8e475273cf13d28bd1c6a2e1bd358. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/HKI191253006.
Sacred Concerto No. 21, "Zhiviy v pomoshchi Vishniaho" (He that dwelleth in the help of the Most High): III. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9712de247bd829f1aab0aecc6022217854b34992f2b97545bac50af34c1722ed. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/HKI191253007.
Sacred Concerto No. 1, "Vospoyte Hospodevi piesn' novu" (O sing to the Lord a new song): I. Allegro - Maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174fc2904b9c6dd369259d168c4d6304ca1829c5603404201643b23562268d3c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191253009.
Sacred Concerto No. 1, "Vospoyte Hospodevi piesn' novu" (O sing to the Lord a new song): II. Andante con moto - Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1a7457b214231ae0445fbd3f6c9e95cb2132cdb05f18dd8a369df19f194c99. 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/HKI191253010.
Sacred Concerto No. 1, "Vospoyte Hospodevi piesn' novu" (O sing to the Lord a new song): III. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5cb46b3358cb8a860eb039bdcc2649ff1c87473dfce1161ce6918b5dea6e4f. 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/HKI191253011.
Sacred Concerto No. 27, "Hlasom moim ko Hospodu vozzvakh" (With my voice unto the Lord have I cried): I. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b35dafff03d2ec90869ee91028e30c6867820d24e825bb4e68c011fb1b4843. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/HKI191253012.
Sacred Concerto No. 27, "Hlasom moim ko Hospodu vozzvakh" (With my voice unto the Lord have I cried): II. Allegretto vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaed5217a938b63be3595e3acb34060768215b9c7b8ceb97ab5fc25a85a5e5f6. 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/HKI191253013.
Sacred Concerto No. 27, "Hlasom moim ko Hospodu vozzvakh" (With my voice unto the Lord have I cried): III. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6050c0c835079ff7a3e8636b444c9206cadde7484a76992ac0b5b3d0a4ed8b73. 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/HKI191253014.
Sacred Concerto No. 27, "Hlasom moim ko Hospodu vozzvakh" (With my voice unto the Lord have I cried): IV. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d077200a54bff75c4d8cb9d70d10b6f7c192cb71cafbff2cee8d3919779473. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/HKI191253015.
Sacred Concerto No. 6, "Slava vo vishnikh Bohu" (Glory to God in the highest): II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cf4759aaa9efe76b4eb66b4763d52c87bcf43128cdd2300273a40ae2437df4. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191253017.