Andris Liepa (; born Moscow, USSR, 6 January 1962) is a Russian ballet dancer, director and producer of Latvian ethnicity. He is the son of former Bolshoi Ballet dancer Māris Liepa. Biography Andris
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 0x1bfb6fc69ac0f9d53626e26957e0d4df207b468305d06d4d68f0b2e26173cb72. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a1b3b65-bf71-4029-aabb-ad1d53c4a050.json and https://artists.proofprofile.net/proofs/artist/5a1b3b65-bf71-4029-aabb-ad1d53c4a050.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ariadne auf Naxos, Op. 60 / Opera: Ein Schönes war: hiess Theseus - Ariadne
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 0x7c4a3840afbef8ec4e8041c685cbee7eb97e5ce2c2a5f968625e89e1808cd42a. 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/DEN960031312.
Ariadne auf Naxos, Op. 60 / Opera: Das waren Zauberworte!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3776048371eaccba7b2a50f9a17c906478817db95817dc1a81e74becf3842448. 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/DEN960031321.
Ariadne auf Naxos, Op. 60 / Opera: "Schläft sie?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74daf6ed42608d0f243aa8c9fe2eabfa65ec10d60c339ecd340ab3ed212d9ed4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEN960031310.
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
Ariadne auf Naxos, Op. 60 / Opera: "Ein schönes Wunder!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3301a9255f29cd65c9c98f4b6e28f52b5e5c5aa6fafeddf31c7134ba8016a52d. 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/DEN960031318.
Ariadne auf Naxos, Op. 60 / Opera: "Circe, kannst du mich hören?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52cd0020678761007f079d99bc5a8b2f23a913ff873ac044116ffce86dbd217. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEN960031319.
Ariadne auf Naxos, Op. 60 / Opera: "Gibt es kein Hinüber?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6857195cd7657d6b2d0596b7b71201176e9a3f518c053b7752221bf66a3c24b3. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEN960031322.