thumb|Shaporin in 1948 Yuri Alexandrovich Shaporin () ( – 9 December 1966), PAU, was a Soviet composer. Two Stalin Prizes first degree (1941, 1946). Stalin Prize second degree (1952). Biography Shap
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 0xb12b4bb4f0aaf564352bb2f4ca63d9242e3e151c05beb1e3ececa5dcfade6d2e. Chain 2 (Bitcoin): anchored in block 953871 (2026-06-16T01:46:03Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07e65347-c4c9-4782-8224-b7fdbea4d5a8.json and https://artists.proofprofile.net/proofs/artist/07e65347-c4c9-4782-8224-b7fdbea4d5a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Decembrists: Soldiers' Chorus: Chorus of Soldiers from the Opera 'Decembrists'
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 0x400537c17c613ee2d57c61c3c4d86bf5d7302e041fbf037201388be434523945. 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/HKI199296909.
Five Pieces for Cello and Piano, Op. 25: II. Valse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dd3f91b5f53667d4f6de9f5fc815ec8f08d0b5670cd445dd451a348d22e090. 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/GB4ZK1713605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c6166f8375a3024e190f83be31bc735a471b03a3b61ea4954e439932d66b66. 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/GBAYC8600515.
Soldiers' Chorus (from The Decembrists) - 2007 Remastered Version
Col. Boris Alexandrov/Soviet Army Chorus/Soviet Army Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8e8b855fc297ed3e032b040407d6fd406ee37884ee74cd85ec6b87afae64fe. 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/GBAYC0701311.
Five Pieces for Cello and Piano, Op. 25: I. Prelude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4941a2e6f8b6d001a85756a2abd3477d87f44de695db72132dba498128ae6f26. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/GB4ZK1713604.
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