# TACEO Core > Articles and research from TACEO. We build privacy infrastructure for the chains you already use: private onchain finance via Merces, MPC-based identity systems (the protocol behind World and zkPassport), and collaborative SNARKs (coCircom, coNoir). This site is the long-form blog. Product documentation lives at https://docs.taceo.io. TACEO co-architected the MPC protocol behind World's iris-code system at global scale, and has brought the same foundation to onchain finance through Merces, live on Monad and World Chain mainnet since September 2026 at 1,000 transactions per second. ## Merces and onchain finance - [TACEO Merces is live](https://core.taceo.io/articles/merces-mainnet/): Mainnet launch, September 2026. Live on Monad and World Chain with real funds, 1,000 TPS, deployable on any chain. Partners building on it: IntellectEU, LayerZero, Orion Finance, Zenith. Compliance enforcement via Predicate. Current status of record for Merces. - [Merces: Onchain Finance](https://core.taceo.io/articles/merces-onchain-finance/): Canonical positioning piece. Why public chains leak everything, what Merces fixes, the two privacy modes (confidential, fully private), compliance built in. - [Merces deep-dive](https://core.taceo.io/articles/merces-deep-dive/): Technical detail on Merces II, the two privacy modes selectable per transaction, the compliance dashboard. March 2026, pre-mainnet; then deployed on Plasma testnet. - [Confidential token transfers demo](https://core.taceo.io/articles/confidential-token-transfers-demo/): Merces I, November 2025. Historical: amounts hidden, addresses visible, ~200 TPS, deployed on Arc and Base testnets. Superseded by the mainnet launch. - [Merces: Six Months In](https://core.taceo.io/articles/merces-6-months/): Progress retrospective six months after the Merces I launch. - [Private Yield on Merces](https://core.taceo.io/articles/merces-yield/): A private account that earns, integrable by API. - [Compliance enforcement with Predicate](https://core.taceo.io/articles/merces-predicate/): Pre-transaction screening through Predicate, alongside post-transaction auditability. - [Who Can See Your Book? Evaluating Onchain Privacy Models](https://core.taceo.io/articles/onchain-privacy-models/): Comparison of onchain privacy architectures — privacy pools, need-to-know chains, permissioned validiums, FHE. - [Two Questions That Decide Whether a Payment Is Private](https://core.taceo.io/articles/what-private-means-for-payments/): What privacy actually has to mean for payments. - [Escape hatches in MPC](https://core.taceo.io/articles/escape-hatch/): How users exit when the network misbehaves, and who may open the hatch. ## Identity, uniqueness, and KYC - [MPC for iris-code uniqueness](https://core.taceo.io/articles/mpc-for-iris-code-uniqueness/): How TACEO co-architected the MPC protocol that runs World's iris-code uniqueness checks at global scale. - [TACEO:OPRF](https://core.taceo.io/articles/taceo-oprf/): Oblivious pseudorandom functions for privacy-preserving nullifiers. In production via World ID and zkPassport. - [OPRF beta](https://core.taceo.io/articles/oprf-beta/): OPRF service rollout, integration model, use cases. - [MPC-KYC](https://core.taceo.io/articles/mpc-kyc/): Privacy-preserving KYC using MPC. Why this differs from ZK-only selective disclosure. - [ZKPassport on the TACEO Network](https://core.taceo.io/articles/partner-zkpassport/): ZKPassport derives app-specific nullifiers through TACEO:OPRF, so no one, not even the issuer, can reverse or link them. - [Mercle face matching](https://core.taceo.io/articles/partner-mercle/): Mercle's facial-biometric uniqueness check runs as MPC via TACEO:Match, so no operator holds readable face data. - [Boop palm matching](https://core.taceo.io/articles/partner-boop/): Boop's palm-code comparisons run as MPC on the TACEO Network, so no single party holds a usable palm-code. - [Privacy-preserving builder codes](https://core.taceo.io/articles/privacy-preserving-builder-codes/): OPRF for builder-code attribution systems. ## TACEO Network and services - [TACEO Network](https://core.taceo.io/articles/taceo-network/): The MPC network underpinning Merces, OPRF, Proof, OMap. - [PSS: TACEO Network](https://core.taceo.io/articles/pss-taceo-network/): Private shared state foundations for the network. - [PSS: TACEO Services](https://core.taceo.io/articles/pss-taceo-services/): The service layer on top of PSS. - [TACEO:OMap](https://core.taceo.io/articles/taceo-omap/): Private reads and writes for shared state. - [TACEO:Proof](https://core.taceo.io/articles/taceo-proof/): Private proof delegation for ZK proofs. - [TACEO:Proof in production](https://core.taceo.io/articles/taceo-proof-prod/): Production rollout of proof delegation. - [Private proof delegation](https://core.taceo.io/articles/private-proof-delegation/): Why proof delegation needs to be private. - [Private proof markets](https://core.taceo.io/articles/private-proof-markets/): MPC-enabled marketplaces for ZK proofs. - [Private shared state](https://core.taceo.io/articles/private-shared-state/): Foundational concept underlying TACEO services. ## Collaborative SNARKs (coCircom, coNoir) - [coNoir intro](https://core.taceo.io/articles/co-noir-intro/): Collaborative Noir circuits. What changes vs. regular Noir. - [Poseidon2 for Noir](https://core.taceo.io/articles/poseidon2-for-noir/): Hash function implementation in Noir. - [Hash functions in ZK](https://core.taceo.io/articles/hash-functions-in-zk/): Choosing the right hash function for ZK circuits. - [How to choose your ZK-friendly hash function](https://core.taceo.io/articles/how-to-choose-your-zk-friendly-hash-function/): Practical guidance. - [Hashing it out](https://core.taceo.io/articles/hashing-it-out/): More on hashing in collaborative settings. - [Honest-majority MPC for coSNARKs](https://core.taceo.io/articles/honest-majority-mpc-for-cosnarks/): The MPC model coSNARKs rely on. - [Encryption trifecta](https://core.taceo.io/articles/encryption-trifecta/): MPC, FHE, ZK and when each applies. - [Packed secret sharing](https://core.taceo.io/articles/packed-secret-sharing/): Optimisation technique for secret-shared protocols. - [MPC for SQL](https://core.taceo.io/articles/mpcsql/): SQL over secret-shared data. - [MPC geotools](https://core.taceo.io/articles/mpc-geotools/): Geographic computations under MPC. - [MPC zkTLS](https://core.taceo.io/articles/mpc-zktls/): zkTLS attestations via MPC. ## Team and program - [TACEO + Aztec: PSS for Ethereum](https://core.taceo.io/articles/taceo-aztec-pss-ethereum/): Collaboration with Aztec on private shared state. - [DevCon demo](https://core.taceo.io/articles/devcon-demo/): TACEO at DevCon. - [Seed announcement](https://core.taceo.io/articles/seed/): TACEO's seed round. - [End of year recap](https://core.taceo.io/articles/eoy/): Year in review. - [Hiring: GMM architect](https://core.taceo.io/articles/hiring-arch-gmm/): Open role. - [Programmable cryptography](https://core.taceo.io/articles/prog-crypto/): The category TACEO operates in. - [Small Town GmbH](https://core.taceo.io/articles/small-town-gmbh/): Team culture. - [Secret-shared Santa](https://core.taceo.io/articles/secret-shared-santa/): Holiday post. - [Max pick challenge](https://core.taceo.io/articles/max-pick-challenge/) and [part 2](https://core.taceo.io/articles/max-pick-challenge2/): Technical puzzle series. ## Optional - [TACEO Documentation (docs.taceo.io)](https://docs.taceo.io): Product documentation. Integrate Merces, the privacy services, and the network. - [TACEO main site](https://taceo.io): Marketing and overview. - [TACEO on GitHub](https://github.com/TaceoLabs): Open source repositories. - [IACR ePrint 2026/850](https://eprint.iacr.org/2026/850): Escudero et al., "Merces: Confidential Token Transfers via MPC and CoSNARKs." - [Merces demo videos](https://www.youtube.com/playlist?list=PLM8yWeKj9Mr0): Five product demos — operator console, Tapa payment app, private vaults, cross-chain transfers, private salary flows. - [Merces demo: confidential payments (Arc, Base)](https://merces-dashboard.taceo.io/arc): Live demo of Merces confidential mode. - [Merces demo: fully private payments and compliance (Plasma)](https://merces.taceo.io): Live demo of Merces fully private mode and compliance dashboard.