Pietri or Piétri is a surname. Notable people with the surname include: Alicia Pietri Montemayor (1923–2011), wife of Venezuelan president Rafael Caldera Andrés Pietri Méndez, Venezuelan otorhinola
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 0x06be65de50e3691c75f2c98bf01c25bc24a68a97989f1e85c5d98704b8c8a923. 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/f81b58bf-5585-4884-a18d-7bf8d050ab73.json and https://artists.proofprofile.net/proofs/artist/f81b58bf-5585-4884-a18d-7bf8d050ab73.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xd320158f0c3ff900f09524354945cda0225cd9d62d2e866eb5e6c404e4d48629. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRLKP0800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50033885910eac584475358fe18da90e639147c035d9c52a38004771a8e8bce. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:52:35Z), 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/BRLKP0800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a736ae4d22fab26e8b31c2f566919dd2ecd9533fb76914946de86e8c3a00af3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRLKP0800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30078f461b05a642fa3d3902a61806ccde376c6460e27cc2d18d354954ec2de. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRLKP0800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0b36de0fbe393d3e7587c0155be45013572d670f64deb3792654b49f949082. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BR03D2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f1e66d9e21dd91d2beae74b50aaa015ee9a7f7a2401d30d5cea686a4c3ea2a. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/BCPF12300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe354e36c9a00bfad083130d14700a4ff652fa15311dd5fb85ad62f600e1b1629. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BR03D2502439.