# Architecture & Concepts

- [Architecture](/info/architecture.md)
- [Transaction Flow](/info/architecture/transaction-flow.md)
- [Transaction Statuses](/info/architecture/transaction-flow/transaction-statuses.md): Transactions on Zircuit pass through several stages before they are fully recorded on the blockchain, which are described on this page.
- [(Deprecated) Sequencer Level Security (SLS)](/info/architecture/sls.md)
- [(Deprecated) Sequencer Level Security Deep Dive](/info/architecture/sls-deep-dive.md)
- [(Deprecated) Modular Prover Design](/info/architecture/modular-prover-design.md): Zircuit operates a comprehensive zero-knowledge proving system built on a modular architecture to efficiently process L2 blocks and submit proofs to L1.
- [Gas Pricing & Transaction Fees](/info/architecture/gas-pricing-and-transaction-fees.md)
- [L1 Data Fee Calculation (Fjord)](/info/architecture/gas-pricing-and-transaction-fees/l1-data-fee-calculation-fjord.md)
- [L1 Data Fee Calculation (Ecotone)](/info/architecture/gas-pricing-and-transaction-fees/l1-data-fee-calculation.md)
- [Supported Transaction Types](/info/architecture/supported-transaction-types.md)
- [Research](/info/research.md)
- [Publications & Grants](/info/research/publications-and-grants.md)
- [Talks & Panels](/info/research/talks-and-panels.md)
- [Security](/info/security.md)
- [Privileged Roles](/info/security/privileged-roles.md): This page lists the addresses that operate the Zircuit network.
- [Bug Bounty](/info/security/bug-bounty.md)
- [Bug bounty - Zircuit core](/info/security/bug-bounty-zircuit-core.md)
- [Audit Reports](/info/security/audit-reports.md)
- [Frequently Asked Questions (FAQ)](/info/faq.md)
- [Concepts](/info/faq/concepts.md): This page provides a glossary of Zircuit concepts and terms.
- [Media Kit](/info/media-kit.md)