Crypto trivia 📚 Data availability
If a block producer publishes only the block header and withholds some transaction data, others can't check whether anything is wrong.
Data availability means that all transaction data in a block has actually been published, so anyone who wants to verify it can access it.
I wish I'd understood this sooner—the tuition I paid could've bought me milk tea for months.
$TIA is the native token of Celestia, a public blockchain focused on data availability. Currently 0.4416.