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 0x70f05028f5b97ece6a5d0a926a6c9475a93f61eed7445be522dacb3fea975ab6. 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/e16e4fe0-6505-4911-b453-474c24f06bd8.json and https://artists.proofprofile.net/proofs/artist/e16e4fe0-6505-4911-b453-474c24f06bd8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Victor Fedotov: Tcherepnin, Rimsky-Korsakov
Walpurgis Night. Ballet music from Faust Bacchante and Bacchus
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 0xbe7d3a45a79ecd357420b880669ae448234447751f0a35a70efa8db9edb43f51. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USA370544475.
The Swan Lake ACT II Grand Pas de deux. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7635ef6358f5a10fd76fd2429547d024a4c9ed4b43979c1314b3d0ab7ea89ebc. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USA370544409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbaf48010d0e303650db44f561373bbe5023d58a97d199e2ed8d93284aaa5116. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USA370544386.
The Swan Lake ACT II Grand Pas de deux. Coda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7075d1c72f071e8fb7d5ad7e275fd5d7449093fb8d6364dd4dab90d0ee0a4c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USA370544412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaafc09d8d733748a0b723b1dd87340990e112c3cc55272839db7e5a23edb748. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA370544413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6408788bc6c5047e33e49191a9a46e1a4ec6b440dcab90067fe4f7a0aa853de. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370544391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f14f3ca34305debfc276423ef35e1f5ba51d3c86dd0ddcac3a5e77fa369cc3. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/USA370544423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028fe177e7328fe5cc125f51d6f50d0b221a68139ff7f54967362ee399b8f409. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:02:52Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370544867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10e924d666f30fbe59e0501b20ceccab4e03100637b8723b633d512b95e1f4e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:20:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370544868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36eff7a8f6960f2efc2f2fb5956f725f1ffd3f50d594652f57c014db868715b1. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USA370544842.
RAYMONDA ACT I La Romanesca (Danse pour deux dames et deux pages)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704740002253852cc678eb2b0ee5117df936c0d1029cfe22e57f5d3a952a054c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:00:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370544846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1b92cddcb1937d79dee8fc6e532258343fc3f1c7ba06483f9e6cd3e94d7677. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA370544847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b13122fc7c41de45e5fb394b1eba74f4a9121984df4635ee1f51abe5a7a796. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T12:00:44Z), 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/USA370544855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ced48006bb6a152b7d8fd291f32525bdb1d1dca79096ba1a47de543a3dc512c. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370544884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98bdce68074b6f021d484375452eb638aeb0b8201ea7dd6dea7be9bace64eb6. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USA370544885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd30d326e4b63369f96e039ffe48f09bb06bc8cd51cb33ca76eb4445b41af414. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:26:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370544856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222b70377a58462b8488f28269738147602d2322205a168ce5107394152cd81b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:17:31Z), 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/USA370544857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c074f59a3a85cb322c3f126677c51ca0a5a885362a10a99bf962019805bf714. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:05:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370544886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb27b3c7578243e432ff31da5fc6757e545dac9a0d42bbba5d8dd264004ad7df. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA370544889.
Tcherepnin: Le Pavillon d'Armide, Op. 29 - Enchanted Kingdom, Op. 39 - Rimsky-Korsakov: The Golden Cockerel
Victor Fedotov. Rimsky-Korsakov: Borodin
Tchaikovsky's Ballet: Swan Lake & Sleeping Beauty
Tchaikovsky The Sleeping Beauty Op. 66 20-24
Tchaikovsky The Sleeping Beauty Op. 66 25-29
Tchaikovsky The Sleeping Beauty Op. 66 15-19
Wieniawski Concerto for Violin and Orchestra No. 1 & 2
Tchaikovsky The Sleeping Beauty Op. 66 1-7
Tchaikovsky The Sleeping Beauty Op. 66 8-14
50 Essential Classical Pieces by the Leningrad Philharmonic Orchestra
Victor Fedotov conducts Tchaikovsky and Glazunov