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 0xaca924c809d0d6458fff192d96d3bb119c7183427ea4d1c1464ce43bd9eb67b4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/caa0b98a-4eb9-4964-9fbb-dae5b6792153.json and https://artists.proofprofile.net/proofs/artist/caa0b98a-4eb9-4964-9fbb-dae5b6792153.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Efta Purane Ikone (Seven Old Ikons) ("Time of the Gypsies")
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 0x602e7232484d7710c990c2913f10e3ad4bf501ded4743a55030707bdbed73034. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FR2GW0700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1366e8cb7a57008af7e348201dfc8106c28a506ff1808278f24c75ff2fb70da. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/FR2GW0700030.
O Chaveja (Oh, My Children) ("Time of the Gypsies")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781ed38027e45e24e6c3eb37904031178b310f252f5b2c25cd74afc270984101. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/FR2GW0700040.
Kana O Del Barvarel (When Lord Gives) ("Time of the Gypsies")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3eb622bf944b113a94d53ced042d934360537429042b2964f4fc959cec01b9. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:03:42Z), 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/FR2GW0700090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d208f891dfbab21d26efba636cf7865738a5dbfa3e59f0f839b40fddf2ab2d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEN961402410.