Fernando António Nogueira de Seabra Pessoa (;"Pessoa". Collins English Dictionary. ; 13 June 1888–30 November 1935) was a Portuguese poet, writer, literary critic, translator, and publisher. He has be
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 0x32d782380a8a1fb1485e410e8f7d5cc44f74f28a1a6ba91e657707d775262822. Chain 2 (Bitcoin): anchored in block 954019 (2026-06-16T23:44:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/364fb1ea-0073-41a2-8a37-9d47d4fdcc9b.json and https://artists.proofprofile.net/proofs/artist/364fb1ea-0073-41a2-8a37-9d47d4fdcc9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fernando Pessoa x Hélio Cícero - Fernando Pessoa 4 X 4 (Integral)
A memória das naus (Poemas escolhidos de Alberto Caeiro)
Nítido como um girassol (Poemas escolhidos de Alberto Caeiro)
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 0x853239b4df244ea9412111796d60baefa3d275220943b4f3da5eaac7aef0ae03. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBPFW1200313.