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 0x443f462dfae25c499769b7acdbb84da7417a46effb45e297ca92287787739bea. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04a668b9-de95-486a-94d2-25c7a89e5ef7.json and https://artists.proofprofile.net/proofs/artist/04a668b9-de95-486a-94d2-25c7a89e5ef7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Balalaika: Monitor Presents the Andreyev Balalaika Ensemble
Lara's Theme (from the film "Dr. Zhivago")
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 0x0b9a8d6d50a518a774d81ea72ca745a14c4f2b832939991a2113fdad051fbfe9. 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/USSF19071302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7faa67d87087bf8f0f735f836d306128108d6cc756a4635bf4ee0f530def4d8. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USSF19071303.
Those Were the Days (based on the Russian Song "The Long Road")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0720f6c0a5f1fb703e16a5578a78307e440b11345558ab116c58ee3f10a715f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USSF19071307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef23e865e84885912e65ac9089b9693d541984f25ac1a76cfe913293cab00d4. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:41:18Z), 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/USSF19071309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5832e5c98052302ac4d0726d4c3d1177de6551d7b9a3ce6ec1a63d7042846fe9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USSF19071313.