$BTC Bitcoin is often considered a "safe" asset in crypto, while Ethereum is seen as more risky due to its ecosystem (DeFi, NFT, network upgrades).
BTC halving, Ethereum upgrades (e.g., transition to Proof-of-Stake or sharding), news about regulation or adoption.
Posts under #BTCPrediction may reflect sentiments like "ETH will surpass BTC" or "BTC will remain king".