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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3c58f9c95ccad7e89281830513d43eba480a0b78defe96f6b25a7dc59573b1. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/063ec544-c629-40f2-9995-35a0840372d0.json and https://artists.proofprofile.net/proofs/artist/063ec544-c629-40f2-9995-35a0840372d0.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0e350c50872ee93b99c8cca9cbfb83dfc0b5df72f3fa124d1fafdd562df6e7. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7V2404036 — a six-check JSON result.
MUDA O CLIMA (MZN, DUH DA NORTE, IGOR MC (DJ NEM MPC)
MENOR SAGAZ (LM DA ZN, DUH DA NORTE, IGOR MC, EVERTON BGD (DJ NEM MPC)
EXPORTANDO RIMA (LM,DUH DA NORTE,IGOR MC)
RATAIADA DO BUZEIRA - DUH DA NORTE, MZN, LAISLA
Vida Mudada (Lm, Duh da Norte, Dj nem Mpc)
MINHAS ESCOLHAS (LM DA ZN, IGOR MC, LK DO PARQUE)
OS DE VERDADE (IGOR MC, DUH DA NORTE, MC GALATICKO)
O Cachê Subiu - Duh da Norte, Gabriel Iluminado, Lm da Zn
SET CANETA DE OURO 1.0 - VILÃO MC, LM DA ZN, DUH DA NORTE, LK DO PARQUE
QUESTÃO DE TEMPO - ISAQUE MK, MENOR JC, DUH DA NORTE
MODELO AMERICANA - MTG (LK DO PARQUE, VILÃO MC, IGOR MC)
PRA CIMA MALOQUEIRO (LM DA ZN, DUH DA NORTE, IGOR MC)