Author
Jack Shard
Jack Shard writes and reviews Whodl's guides to meme coin holders, wallets and scam checks.
Jack Shard builds and runs Whodl with a small independent team, and writes the guides in the Learn section.
How Jack's guides are made
- Each guide is written with AI assistance and reviewed by Jack before it is published.
- Figures that come from Whodl's own measurements are filled in from the database when the page loads, and the page shows when they were measured. Facts from outside Whodl are linked to their source.
- Guides explain how to read the evidence. They never call a coin safe or a scam, never predict a price, and never accuse a person.
Corrections
If a guide gets something wrong, tell us through support. Corrections are made on the page and the update date changes. How every number on the site is made is on the about page.
Guides by Jack Shard
- Best wallets for Robinhood Chain: Robinhood Wallet, MetaMask and others compared
- Bundle vs cluster: what's the difference between bundled and linked wallets?
- Did a KOL call actually move the price? How to check
- Holder count vs holder quality: why 5,000 holders can mean less than 500
- How long does a memecoin pump last? When the high came after the first scan
- Can a bundled coin still run? How often bundled coins recover
- Is this meme coin a scam? How to check the evidence
- How to read a wallet's history across coins (and spot smart money)
- How to trace where a wallet's SOL came from (funding source) on Solana
- How to verify a Robinhood Chain token contract before you buy
- Is Robinhood Chain decentralized? The sequencer, the council and what they control
- Memecoin glossary: jeet, cabal, cooking, CTO, dex paid and more
- Mention spike vs holder growth: which one leads the price?
- Dev fee claims on pump.fun: what they are and how to track them
- pump.fun vs LetsBonk vs Bags vs Believe: which launchpad's coins have cleaner holders?
- Is there a Robinhood Chain airdrop? What has actually been announced
- Robinhood Chain bridge: canonical vs fast bridges, and the 7-day exit
- Robinhood Chain explorer: the real one, and how to spot lookalikes
- Robinhood Chain gas fees: what a swap costs, and why fees spiked
- Robinhood Chain vs Arbitrum One: same technology, different chains
- Robinhood Stock Tokens vs owning the stock: what you actually hold
- What is a good holder to market cap ratio for a memecoin?
- WHODL research coverage: what is checked and what is unknown
- Why does a coin pump after the dev sells?
- Whodl's scores explained: Timing, Hype Gap and Room
- Am I late to a coin? Five numbers that answer it
- Bubblemaps vs Whodl vs RugCheck vs GMGN: what each tool actually measures
- Dev sold vs dev holds: which is worse for a memecoin?
- Does paying DEX Screener help a coin? What the holders did after the payment
- Fresh wallets vs established wallets: what the mix of buyers tells you
- Has this dev launched coins before? How to check a deployer's record
- How a Solana memecoin launch works, from bonding curve to Raydium
- How "if they sell, price drops X%" is calculated
- How many holders should a new memecoin have? The measured answer
- How much bundled supply is normal? Measured across every coin Whodl has checked
- How much liquidity is enough for a memecoin? Measured against who can sell into it
- How to find the real contract address when a ticker has copies
- How to read a crypto bubble map
- Insider wallets vs smart money: how to tell them apart on a holder list
- A fear and greed index for memecoins: how Whodl's room gauge works
- Pons vs Pools.trade: the launchpads on Robinhood Chain
- Robinhood Chain memecoins: how to check who's holding before you buy
- Robinhood Chain vs Base for memecoins
- Robinhood Chain vs Solana for memecoin traders
- Sniper vs bundler: what's the difference, and which one hurts holders
- What is a bundled wallet in crypto?
- What is Robinhood Chain? The facts, without the marketing
- What percent of new Solana coins survive a week? Whodl's running count
- What top 10 holder percentage is normal for a new coin?