Zofia Kilanowicz (born 15 May 1963) is a Polish operatic soprano who has performed internationally, with a focus on Polish music. She appeared as Roxana in Szymanowski's King Roger in Paris and New Yo
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 0xc9af8e1320464c14d83fd0ffecb0327db5b85c8efe30d5f2b256a1ed12eb473c. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c44cda7-6c1c-4a62-8097-47c22195fa2a.json and https://artists.proofprofile.net/proofs/artist/3c44cda7-6c1c-4a62-8097-47c22195fa2a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Symphony No. 3, Op. 36, "Symphony of Sorrowful Songs": II. Lento e largo - Tranquillissimo
Polish National Radio Symphony Orchestra
Mystic Classics - Visionary Choral and Orchestral Masterpieces
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 0x88aaa0ef9e4224ce33c473d338c9a5faacd6eef212316cde572a191fee472ac5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKI199406302.
Symphony No. 3, Op. 36, "Symfonia Piesni Zalosnych" (Symphony Of Sorrowful Songs): 2nd Mvt: Lento E Largo - Tranquillisimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd1424439e52162012e70bfe62acdcd9394658c0f5c07061b03993103fd43a5. 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/HKI199322315.
Symphony of Sorrowful Songs - Traquillisimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85c5a4ccfcb6dfe779f579a1449a1fcd6f84fe4c13d5151b00ecfe8da42f215. 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/HKI190451210.
Symphony No. 3 II. Lento e largo (feat. Polish National Radio Symphony Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a14b44f636396de66810edb98edf90734da99e86998ef53a88391491a07952. 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/USAKS1400051.