Bitcoin launched in 2009 with simple payments. 10 years later work began to create smart contract functinality over bitcoin. After a long 6 year wait the first smart contracts were released to main net last week. Now an eco system is growing up building tools, libraries and contracts. Still early, like the very first days of nostr 5-6 years ago. But it improves every day and will hopefully take market share from other chains, back to fair coins such as bitcoin.