Public ledger of every directory change — grade bumps, KYC re-tests, sponsorship activations, incident updates. We log it so visitors can verify our claim that the editorial firewall holds.
The list is the product; this is the receipt of how it changes.
{"provider":{"id":"cypher-stack-research","category":"educational","name":"Cypher Stack Research","tagline":"Open audits + research papers on Monero, Firo, Salvium and other privacy protocols.","kyc_tags":["anonymous_signup"],"feature_tags":["open_source"],"rating":{"stars":null,"count":0,"grade":"A"},"fees":{"summary":"Free · public archive"},"links":{"web":"https://cypherstack.com","outbound_slug":"cypher-stack-research"},"highlight_tags":["FREE","TECHNICAL","AUDIT"],"last_verified":"2026-05-11","subcategory":"Technical Deep-Dive","review":"Cypher Stack is the **independent applied-cryptography research firm** that publishes open audits and research papers on **Monero, Firo, Salvium, and other privacy-currency protocols**. Listed at **Grade A** because Cypher Stack occupies a structurally unique position: it's the only firm that combines **academic-grade cryptographic rigour** + **focus on privacy currencies** + **public open-source publication model** — making it the canonical exter{"provider":{"id":"cypher-stack-research","category":"educational","name":"Cypher Stack Research","tagline":"Open audits + research papers on Monero, Firo, Salvium and other privacy protocols.","kyc_tags":["anonymous_signup"],"feature_tags":["open_source"],"rating":{"stars":null,"count":0,"grade":"A"},"fees":{"summary":"Free · public archive"},"links":{"web":"https://cypherstack.com","outbound_slug":"cypher-stack-research"},"highlight_tags":["FREE","TECHNICAL","AUDIT"],"last_verified":"2026-05-11","subcategory":"Technical Deep-Dive","review":"Cypher Stack is the **independent applied-cryptography research firm** that publishes open audits and research papers on **Monero, Firo, Salvium, and other privacy-currency protocols**. Listed at **Grade A** because Cypher Stack occupies a structurally unique position: it's the only firm that combines **academic-grade cryptographic rigour** + **focus on privacy currencies** + **public open-source publication model** — making it the canonical exter