Field notes from EthSystems on building privacy on Ethereum for institutional use cases.https://original.es-internal.pages.dev/https://original.es-internal.pages.dev/blog/introducing-ethsystems/https://original.es-internal.pages.dev/blog/introducing-ethsystems/EthSystems builds confidential systems for institutional Ethereum, carrying forward the IPTF work as an independent company focused on privacy, protocol design, and commercial execution.Tue, 14 Jul 2026 00:00:00 GMTOskarhttps://original.es-internal.pages.dev/blog/exploring-hardened-shielded-pools/https://original.es-internal.pages.dev/blog/exploring-hardened-shielded-pools/Extending a working shielded pool with epoch nullifiers and PIR, and why private selection is the harder problem left for private payments at scale.Thu, 11 Jun 2026 11:00:00 GMTYanishttps://original.es-internal.pages.dev/blog/resilient-civic-participation/https://original.es-internal.pages.dev/blog/resilient-civic-participation/Petitions on Ethereum where the signer list never exists and the outcome stays verifiable from chain state alone.Fri, 29 May 2026 13:00:00 GMTAaryamannhttps://original.es-internal.pages.dev/blog/resilient-disbursement-rails/https://original.es-internal.pages.dev/blog/resilient-disbursement-rails/Aid payments on Ethereum that protect recipients even when local partners are compromised, or when recipients cash out into local currency.Thu, 14 May 2026 13:00:00 GMTAaryamannhttps://original.es-internal.pages.dev/blog/resilient-plural-identity/https://original.es-internal.pages.dev/blog/resilient-plural-identity/Designing identity on Ethereum that survives issuer failure: plural attestation sources, vOPRF sybil resistance, and an on-chain trust anchor that no single party can revoke.Wed, 22 Apr 2026 09:00:00 GMTAaryamann, Oskarhttps://original.es-internal.pages.dev/blog/diy-validium-private-logic-on-public-rails/https://original.es-internal.pages.dev/blog/diy-validium-private-logic-on-public-rails/A validium PoC where the business logic is ordinary Rust, proved in zero knowledge and verified on Ethereum.Wed, 18 Mar 2026 02:00:00 GMTOskarhttps://original.es-internal.pages.dev/blog/private-crosschain-atomic-swaps-part-2-of-2/https://original.es-internal.pages.dev/blog/private-crosschain-atomic-swaps-part-2-of-2/How a Trusted Execution Environment (TEE) can coordinate private crosschain atomic swaps today, what the real attack surfaces are, and why TEEs are a practical bridge to stronger cryptographic solutions.Fri, 13 Mar 2026 09:00:00 GMTYanishttps://original.es-internal.pages.dev/blog/private-crosschain-atomic-swaps-part-1-of-2/https://original.es-internal.pages.dev/blog/private-crosschain-atomic-swaps-part-1-of-2/How to build atomic delivery-versus-payment across two chains while hiding amounts, prices, and counterparty identities. Part 1 covers the protocol: shielded UTXO notes, stealth addresses, and the coordination problem.Fri, 06 Mar 2026 09:00:00 GMTYanis, Aaryamannhttps://original.es-internal.pages.dev/blog/building-private-transfers-on-ethereum-with-plasma/https://original.es-internal.pages.dev/blog/building-private-transfers-on-ethereum-with-plasma/Explore how ZK-plasma enables private stablecoin transfers on Ethereum. Covers off-chain execution, balance proofs, and deployment tradeoffs for institutions.Thu, 26 Feb 2026 08:00:00 GMTAaryamannhttps://original.es-internal.pages.dev/blog/building-private-transfers-on-ethereum-with-shielded-pools/https://original.es-internal.pages.dev/blog/building-private-transfers-on-ethereum-with-shielded-pools/A proof-of-concept for compliance-first private stablecoin transfers using a shielded pool on Ethereum L1: covering KYC-gated entry, UTXO commitments, dual-key architecture, and ZK circuits in Noir.Thu, 19 Feb 2026 09:00:00 GMTAaryamannhttps://original.es-internal.pages.dev/blog/building-private-bonds-on-ethereum-part-3/https://original.es-internal.pages.dev/blog/building-private-bonds-on-ethereum-part-3/Exploring Fully Homomorphic Encryption as a path to confidential institutional bonds on Ethereum, the third approach in our Private Bond PoC series.Thu, 12 Feb 2026 08:00:00 GMTYanishttps://original.es-internal.pages.dev/blog/building-private-bonds-on-ethereum-part-2/https://original.es-internal.pages.dev/blog/building-private-bonds-on-ethereum-part-2/Part 2 of our private bonds series: we rebuild the same protocol on Aztec, where notes, nullifiers, and ZK proofs are handled by the network itself. 200 lines of Noir replace three separate components.Thu, 05 Feb 2026 08:00:00 GMTYanishttps://original.es-internal.pages.dev/blog/public-rails-vs-private-ledgers/https://original.es-internal.pages.dev/blog/public-rails-vs-private-ledgers/An institutional decision framework for choosing between public blockchains with cryptographic privacy and private ledgers with trust-based privacy.Fri, 30 Jan 2026 00:00:00 GMTOskarhttps://original.es-internal.pages.dev/blog/building-private-bonds-on-ethereum/https://original.es-internal.pages.dev/blog/building-private-bonds-on-ethereum/A walkthrough of a proof-of-concept for private zero-coupon bonds using zero-knowledge proofs on Ethereum - covering the UTXO model, JoinSplit circuits, atomic swaps, and the relayer architecture.Wed, 21 Jan 2026 00:00:00 GMTYanishttps://original.es-internal.pages.dev/blog/cypherpunk-x-institutional-privacy/https://original.es-internal.pages.dev/blog/cypherpunk-x-institutional-privacy/Exploring the overlap and tension between cypherpunks and institutions - and how the Institutional Privacy Task Force is mapping real institutional privacy requirements to solutions on Ethereum.Fri, 09 Jan 2026 00:00:00 GMTOskar