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Harry Papacharissiou
3,800 posts
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Harry Papacharissiou
@pappas9999
Director, Developer & Agentic Enablement @Chainlink Labs | soundcloud.com/pappas99 🎧 | 🇦🇺🇬🇷 | Views are my own
Australia
linktr.ee/pappas99
Joined June 2014
2,781
Following
4,974
Followers
  • user avatar
    Harry Papacharissiou
    @pappas9999
    Sep 6, 2021
    Today I was surprised with the most based birthday cake 🎂
  • user avatar
    Harry Papacharissiou
    @pappas9999
    Oct 12, 2022
    Replying to @BatsouElef
    no, being good at google is important
  • user avatar
    Harry Papacharissiou
    @pappas9999
    Mar 29, 2021
    After initially joining the Chainlink Labs team part-time in October, I've now taken the ultimate LINK pill and will be focusing all of my working time on helping to build #Chainlink!
    GIF
  • user avatar
    Harry Papacharissiou
    @pappas9999
    Jul 5, 2023
    Just deployed and interacted with my first ever cross-chain smart contract. ⛓️🌉⛓️ After years of having a single chain mental model when building smart contracts, it's pretty mind blowing when you see contracts across chains talk to eachother in a trust minimized way
    56K
  • user avatar
    Harry Papacharissiou
    @pappas9999
    Jul 31, 2020
    $LINK Gas Station - A design pattern that lets you interact with your Chainlinked Smart Contracts without needing to pay LINK or ETH/GAS. Let someone else pay it, and then use the Chainlink Decentralized Price Reference data to calculate your invoice in $ github.com/pappas999/Link…
  • user avatar
    Harry Papacharissiou
    @pappas9999
    Oct 30, 2024
    The birth of the Chainlink Runtime Environment to a packed #SmartCon
    00:00
    13K
  • user avatar
    Harry Papacharissiou
    @pappas9999
    Mar 18, 2025
    Chainlink Runtime Environment (CRE) will be the ultimate implementation of the chain abstraction design pattern. You build your app to use any chain(s) you want, while CRE orchestrates offchain systems, APIs, and onchain smart contracts across blockchains. In this new paradigm,
    I'm the captain now
    50K
  • user avatar
    Harry Papacharissiou
    @pappas9999
    Sep 2, 2025
    Developers are going to love the Chainlink Runtime Environment (CRE), just built and tested a Proof of Reserve Workflow! Link to the early access program below 👇
    CRE CLI
    42K
  • user avatar
    Harry Papacharissiou
    @pappas9999
    Mar 2, 2023
    So now that the word is officially out, what exactly is #Chainlink Functions, how did it come about, and why is it so powerful? I'll try break it down so that even non developers can understand 🧵
    user avatar
    Chainlink
    @chainlink
    Mar 1, 2023
    Tomorrow, we'll go behind the scenes of Chainlink Functions on the latest #Chainlinked Twitter Spaces. Find out: -Why Functions was created -Key features for builders -New use case possibilities Set a reminder ⏰ ⬇️ x.com/i/spaces/1OyKA…
    47K
  • user avatar
    Harry Papacharissiou
    @pappas9999
    Oct 16, 2020
    #Tesla External Adapter now up on the @chainlinkmarket. There's about 20 API endpoints still to be added to it in case someone wants to contribute, eg set speed limit, start/stop charging, flash lights etc #Chainlink
    Market.link
    From market.link
  • user avatar
    Harry Papacharissiou
    @pappas9999
    Nov 22, 2023
    Why use #Chainlink CCIP when there's multiple other cross-chain protocols? It's quite simple really: - Only solution with 5 levels of cross-chain security ✅ - Hasn't been exploited for $100s of millions✅ - Conflict of interest free infrastructure ✅ - Actually decentralized
    18K
  • user avatar
    Harry Papacharissiou
    @pappas9999
    Aug 30, 2021
    Last month, we taught #Solidity, Ethereum and #Chainlink development to over 1000 devs in our first coding bootcamp. Developers are now able to access the content on-demand, with more events planned for the future, including community-run bootcamps in other languages!
    user avatar
    Chainlink
    @chainlink
    Aug 28, 2021
    The first Smart Contract Developer Bootcamp gave devs worldwide an intro to smart contracts & how to connect #dApps to secure off-chain services with #Chainlink. Access the bootcamp on-demand today to replay sessions or start your journey at your own pace. blog.chain.link/smart-contract…
  • user avatar
    Harry Papacharissiou
    @pappas9999
    Oct 6, 2022
    We need more fun events & experiences for devs at crypto conferences. I really love the concept of Developer Speedrunning..think e-sports but instead of a game its devs competing against each other in knock-out rounds to finish a Solidity code challenge. Was so much fun to watch!
    00:00
  • user avatar
    Harry Papacharissiou
    @pappas9999
    Aug 11, 2025
    The Link Marines have an uncanny ability to be able to meme things into reality, many such examples of this the past few years. Here's a meme I had commissioned back in mid 2020 for a hackathon project. Look familiar? Original hackathon project below 👇
    user avatar
    Chainlink
    @chainlink
    Aug 9, 2025
    Any asset ​​→ LINK ​​→ Chainlink Reserve
    10K

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