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Inetpeople Holding

BD Elixir and on-chain engineering in Singapore

We build payment and on-chain systems in Elixir and publish the libraries underneath them, so the work can be read, installed and audited before you hire us.

  1. Scope

    Elixir/OTP and Phoenix systems for payments and on-chain finance, built by the maintainers of the open-source libraries for Ethereum, DeFi and machine payments listed on the Build line.

    • Elixir/OTP & Phoenix systems
    • Ethereum & EVM integration
    • DeFi protocol integration
    • HTTP 402 payment middleware

  2. How an engagement works

    Each engagement is agreed in writing: a build, an integration, or a review of an existing Elixir or on-chain codebase. Code written on top of the open-source libraries keeps them as ordinary hex.pm dependencies.

  3. The record behind it

    BD2 Portfolio platform 2024

    Crypto portfolio management: multi-exchange integration, dynamic hedging, portfolio-margin optimisation.

    BD3 BlockWatch DeFi 2024

    Monitors DeFi positions across Aave and Compound, with oracle-based USD valuations and time-series history.

    BD4 Eight open-source libraries

    Payment and on-chain libraries for Elixir, published under the ZenHive organisation on GitHub and hex.pm.

    • mpp

      Payments

      Machine Payments Protocol — HTTP 402 payment middleware for AI agents (Stripe fiat, Tempo stablecoins, EVM).

      Co-developed with Stripe and Tempo Labs.

      hex.pm GitHub

    • onchain

      Ethereum

      Shared Ethereum library — eth_call reads, transaction signing, ABI codecs and cryptography.

      hex.pm GitHub

    • onchain_evm

      EVM

      Local EVM simulation, Solidity parsing, debug/trace, and contract codegen via Rust NIFs.

      hex.pm GitHub

    • onchain_aave

      DeFi

      Aave V3 lending-protocol bindings for Elixir — pool reads/writes, oracle, math.

      hex.pm GitHub

    • onchain_tempo

      Tempo

      Tempo blockchain primitives — 0x76 transactions, TIP-20 tokens, fee-payer co-signing.

      hex.pm GitHub

    • onchain_js

      JS Interop

      Run npm packages on the BEAM via embedded QuickJS.

      hex.pm GitHub

    • hieroglyph

      ABI

      Ethereum ABI encoding/decoding — maintained fork of exthereum/abi with Elixir 1.19+ support.

      hex.pm GitHub

    • cartouche

      RPC

      Lightweight Ethereum + Solana RPC client with signers and EIP-4844/7702 tx builders.

      hex.pm GitHub

REF On working with the founder

Recommendations written on LinkedIn by people who worked with the founder, quoted verbatim.

Ich habe sehr gerne mit Ernesto bei PlusServer gearbeitet. Anfallende Projekte konnten immer sehr effizient besprochen und gelöst werden. Seine freundliche und verbindliche Art, kombiniert mit dem umfassenden IT-Know-how, kann man nur als eine Bereicherung für PlusServer bezeichnen. Ich freue mich auf eine weitere Zusammenarbeit — entweder in Deutschland oder Süd-Ost-Asien!
Christiane Fischer Head of Product Management, rebeam GmbH (formerly PlusServer) Source: LinkedIn
Having supplied and supported Global Telecom Services for Ernesto at Mesh Solutions, I can say that he is one of the best business leaders and entrepreneurs I've come across. Providing quality, personalized, innovative and dedicated services to his clients, as well as making sure he only works with highly skilled professionals, makes any company Ernesto gets involved with a success. He is always available, with only one purpose in mind: exceeding his client's expectations. I would definitely recommend him to any client looking for high-quality and scalable telecom services on a global scale.
Vladimir Cordier Technology, M&A & Transformation Lead Source: LinkedIn

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INETPEOPLE HOLDING PTE. LTD. · 68 Circular Road, #02-01, Singapore 049422