ahoyhoy (oh, this is from when I slipped and fell in the bathtub)… say I have 10B of coin $D … how can I lock that up so it’s represented by equal amounts of $E, $F, and $G tokens?

i.e., how can I publish a token that’s comprised of multiple other tokens?

You can achieve this by using decentralized finance platforms like token swaps and liquidity pools. Platforms such as Uniswap or SushiSwap allow you to pool your $D tokens along with $E, $F, and $G tokens, creating a new token that represents a combination of the original tokens based on their relative values. Just make sure to do proper research and understand the risks involved in such transactions.