Hasmik Papian (; born 2 September 1957)ՀԱՍՄԻԿ ՊԱՊՅԱՆ (Armenian) is an Armenian soprano. She was awarded the People's Artist of Armenia title in 2004. Papian was named a Cultural ambassador of Armenia
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 0xa3663587b797cf3b0217bd8ed039ad394e5fbbcab1ef3498d65610591f0291bf. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f932ede6-4d80-41e2-a329-2c6b9e470c07.json and https://artists.proofprofile.net/proofs/artist/f932ede6-4d80-41e2-a329-2c6b9e470c07.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Symphony No. 9 In D Minor, Op. 125, "Choral": IV. Finale: Presto
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 0xd5604ae7ecf13312685a6bd789b045b766ce3950aed68068e7a702943910c6d9. 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/HKI199700704.
Symphony No. 9 In D Minor, Op. 125, "Choral": I. Allegro Ma Non Troppo, Un Poco Maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa59f50f485b7383dce80fec6593dec6ed28126843eb4c67186ee0f4375b7546. 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/HKI199700701.
Symphony No. 9 In D Minor, Op. 125, "Choral": III. Adagio Molto E Cantabile - Andante Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d47b4a0d24739e97d4c5ff108cad8ab4a964a8ade9adfa37b3d1397de6a581. 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/HKI199700703.
Symphony No. 9 In D Minor, Op. 125, "Choral": II. Molto Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef33d45b718c39de912276a6e029ce3c4752aa066c3d0dabdd2de59043788f5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKI199700702.
Symphony No. 9 in D Minor, Op. 125 "Choral": IV. Finale. Presto - Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7a8eb44b11404c22ee4fece4f059a9262e54a6039b6c21490b81fb1dc4185a. 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/HKI192011301.