Top 20 deflationary cryptocurrencies, as rankings may vary based on market capitalization, adoption, and other factors, I'll provide you with a list of some well-known deflationary cryptocurrencies:

1. Bitcoin (BTC)

2. Ethereum (ETH)

3. Dogecoin (DOGE)

Cardano (ADA)

Binance Coin (BNB)

Chainlink (LINK) - Chainlink's Liquidity Program burns a portion of its LINK tokens, contributing to its deflationary nature.

Stellar (XLM) - Stellar's inflation rate decreases over time, making it deflationary in nature.

Monero (XMR) - Monero's supply decreases due to the protocol's built-in deflationary mechanism.

Zcash (ZEC) - Zcash's emission curve is designed to slow down the issuance of new coins over time, creating a deflationary effect.

Basic Attention Token (BAT) - BAT burns a portion of its tokens to reduce the total supply, making it deflationary.

Algorand (ALGO) - Algorand's deflationary mechanism comes into play when transaction fees are burned, reducing the total supply of ALGO.

Dai (DAI) - DAI's supply is regulated by MakerDAO's stability fee, which can lead to a reduction in the total supply when holders pay the fee.

Tether (USDT) - Tether occasionally conducts token burns, reducing the total supply of USDT.

Litecoin (LTC) - Litecoin's halving events decrease the reward for mining new blocks, leading to a reduction in the supply over time.

Polkadot (DOT) - Polkadot's tokenomics include a burn mechanism for network fees, which can contribute to the deflationary nature of DOT.

Uniswap (UNI) - Uniswap burns UNI tokens as transaction fees, reducing the total supply over time.

Compound (COMP) - Compound burns a portion of its COMP tokens, leading to a reduction in the total supply.

Yearn.finance (YFI) - Yearn.finance has a buyback and burn mechanism for its YFI tokens, which can contribute to its deflationary nature.

Theta (THETA) - Theta's

$DOT $THETA $BNB