Share your PDA mental model on social media

You spent six days wrestling with PDAs. You closed accounts and reclaimed rent. You tried to break the seed model on purpose. You wrote a long-form piece on dev.to that captures the mental model in plain language. That is more genuine learning than most developers do in a quarter, and right now it is sitting at the bottom of a feed nobody is scrolling.

Amplify days exist because a public commit is different from a private one. Posting your PDA explainer to a developer audience does three things at once. It puts your name in front of the people who hire, collaborate with, and learn from each other in this ecosystem. It forces you to compress what you understand into one or two paragraphs, which is the test of whether you actually understand it. And it locks in the learning, because in three months when you forget what a bump seed is, the social trail you left will pull you back to the explainer you wrote.

Today’s challenge is small in lines of code (zero) and large in payoff. Pick a platform, write a post that does justice to the week, link your dev.to piece, and ship it with the project hashtag.

The Challenge

What you’ll need

• The dev.to post you published on Day 69
• An account on at least one developer-facing social platform (X, LinkedIn, Bluesky, or Farcaster all work)
• A screenshot or short clip of your counter program running, or your Solana Explorer view of an init_counter transaction

Steps

1. Open the dev.to post from yesterday and reread the first two paragraphs. The hook you wrote there is the seed of your social post.
2. Draft the post. On X, you have two reasonable shapes: a single post with a punchy one-line claim plus the dev.to link, or a short thread (three to six posts) where each post lifts one specific idea from your explainer. On LinkedIn, write three to five short paragraphs and put the dev.to link in the first comment, since LinkedIn deprioritizes posts with outbound links in the body. A workable thread structure:
   • Hook post: One sentence that names the surprise. “I spent a week on Solana PDAs and the thing that finally made them click was realizing they are not accounts a program owns, they are accounts a program can prove it derived.”
   • Context post: Where you started. The Web2 mental model you came in with. The first moment of confusion.
   • Core insight post: The deterministic-key analogy. Seeds in, address out, no private key needed.
   • Concrete artifact post: A screenshot of your counter PDA on Solana Explorer with a one-line caption.
   • Closing post: What you would tell yourself on Day 64. Link to the dev.to writeup.
3. Attach a visual. Screenshots of code outperform screenshots of prose on every platform. A clean terminal showing anchor test passing, or an Explorer view of your PDA’s lamport balance dropping to zero after close_counter ran, makes the post stop the scroll. Use Carbon if you want a polished code snippet image instead of a raw screenshot.
4. Add the hashtag. #100DaysOfSolana is the connective tissue of this program. It is how other participants find you, how the Solana and MLH accounts surface and reshare strong posts, and how you discover other people who are exactly where you are this week. Use it on every Amplify and Document day.
5. Post it. Then do one more thing: reply to two other #100DaysOfSolana posts from people who are at a different point in the program. A thoughtful reply on someone else’s post is worth more than three posts of your own, because it is how communities actually form.

Resources

• Solana docs: Program Derived Addresses — the canonical reference, useful to link to if anyone asks a follow-up question on your post
• Anchor docs: PDAs — the Anchor-specific PDA reference, in case readers want to see the framework view
• DEV Solana tag — where your explainer lives and where other Solana writeups show up
• #100DaysOfSolana on X — the live feed of everyone running this program, and the easiest place to find two people to reply to today

Submission

Share your post on social media using the #100DaysOfSolana hashtag, then submit it here. Also, find other people’s posts and leave comments and boost them!