Here are 5 coins that I would recommend investing $1000 in in 2023:

Bitcoin (BTC)

Bitcoin is the original cryptocurrency and is still the most popular and widely-adopted cryptocurrency in the world. It has a strong track record of price appreciation and is seen as a store of value by many investors. Bitcoin is also relatively safe and secure, as it is based on a decentralized blockchain network.

Ethereum (ETH)

Ethereum is the second-largest cryptocurrency by market capitalization and is a platform for decentralized applications (dapps). It is also the most popular blockchain for NFTs (non-fungible tokens). Ethereum is still under development, but it has a lot of potential for growth in the years to come.

Cardano (ADA)

Cardano is a newer cryptocurrency that is designed to be more scalable and energy-efficient than Bitcoin and Ethereum. It is also based on a proof-of-stake consensus mechanism, which is more environmentally friendly than the proof-of-work consensus mechanism used by Bitcoin and Ethereum.

Solana (SOL)

Solana is a fast and scalable blockchain that is well-suited for DeFi (decentralized finance) applications. It is also relatively new, but it has seen rapid growth in recent months.

Avalanche (AVAX)

Avalanche is another fast and scalable blockchain that is well-suited for DeFi applications. It is also relatively new, but it has seen rapid growth in recent months.

It is important to note that these are just a few of the many promising cryptocurrencies that are available. When choosing which coins to invest in, it is important to do your own research and to only invest money that you can afford to lose.

As for which coin has the potential to grow 1000x, it is impossible to say for sure. However, I believe that Bitcoin, Ethereum, Cardano, Solana, and Avalanche all have the potential for significant growth in the years to come.