Denis Viktorovich Shapovalov (born ) is a Canadian professional tennis player. He has been ranked as high as world No. 10 in singles by the ATP, achieved on 21 September 2020 and a doubles ranking of
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 0x436491567f09901d76c6ce863b6ef49065cc6dc39a7da0b0708a4b33bf0db112. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff189dfa-8d2d-41d3-a717-136a6ba26c44.json and https://artists.proofprofile.net/proofs/artist/ff189dfa-8d2d-41d3-a717-136a6ba26c44.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Schumann & Tchaikovsky: Great Cello Concertos
Nocturne in D Minor for Cello and Оrchestra, Op. 19, No. 4
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 0xaee13124f3d167b0f017fb92d074a193d8feeb12139c2a995b137a83eb1800d9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/RUB091300003.
Valery Beluntsov - 24 Preludes for Cello and Piano
24 Preludes for Cello and Piano, Op. 178: Prelude No. 23 in F Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d629cd244f42baf4162012e8e352ec47ab756acfb76de6de7446dba32583de0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2092772.
Boccherini, Schubert, Debussy: 3 Cello Sonatas
Cello Sonata No. 6 in A Major: I. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee05eac59da964968bf926839e68390fd76701e554505629e0c6a2282f6af09b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/RUB091000001.
14 Romances, Op. 34: No. 14, Vocalise (Arr. for Cello and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc377a64f3d9afb2e641d88315e23dff8eedc32ab51f3353102902148748041b9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/EEUV32300011.
Cello Sonata in G Minor, Op. 19: III. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4273918ba018b3f859e9668e3ec4e67baca1bd69fd07f52087da770a1ceef2. 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/EEUV32300015.
10 Preludes, Op. 23: No. 10, Largo (Arr. for Cello and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daad6607183bb95e5a0fbfdcb5472fd231d3f39a3cb37724ba4395fc1ad926e. 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/EEUV32300014.
2 Pieces for Cello and Piano, Op. 2: No. 2, Danse orientale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633643055745b9678466b8456170814dc0aee108cd14c9a9f041d1b79b15dd7b. 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/EEUV32300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea3b0f39a9e12ec3d472f95c0479bc087656d04986fd77a11cdaaac669e9743. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EEVR32200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fc6b8c782628f135eea2a7fdb62e578e53d92a6044e8c87ca79182874546b6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB362100003.
Aria (From Goldberg Variations, BWV 988)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2d11288c601120b57fde1a26ac9544a34771604177fdb5b06dc1ff65fd3482. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:17:12Z), 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/EEUV32200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b3d0ca80bff37c85fb236ec66cf3825aa9d395c1fcb4c6dae65d8149aa8219. 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/EEVR32200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbe1dde0cd94691917fe94ffbcedb60c9d0232c1f25913da8db9125482a6bf7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/EEVR32200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc775b390bc19d2c9915b16bc0e97012880d07f5bca11c5f86af9a2d16f2e97f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUB362100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7342189903e93d0c69db2ff85de9f4088ceff84c87c4440d6e3cb6a102e0649. 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/EEUV32200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc377a64f3d9afb2e641d88315e23dff8eedc32ab51f3353102902148748041b9. 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/EEUV32300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc377a64f3d9afb2e641d88315e23dff8eedc32ab51f3353102902148748041b9. 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/EEUV32300011.
Beau soir, L. 6 (Arr. for Cello and Piano by Aleksandr Grechaninov)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f54e41f0f0ad66b7620b112eda83f2e8169c788b2e18fba5ed621ef55970b5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/EEUV32300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee13124f3d167b0f017fb92d074a193d8feeb12139c2a995b137a83eb1800d9. 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/RUB091300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4273918ba018b3f859e9668e3ec4e67baca1bd69fd07f52087da770a1ceef2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/EEUV32300015.