Layer 1
The original cryptocurrency and proof-of-work blockchain.
A peer-to-peer electronic cash system launched in 2009. Proof-of-work mining secures a UTXO ledger with a fixed 21 million coin supply; Script, SegWit and Taproot enable programmable spending conditions, and the Lightning Network adds fast off-chain payments.
BitcoinIntermediateA large quantum computer running Shor's algorithm could forge Bitcoin signatures, but no such machine exists yet. Learn which addresses expose public keys, how many coins are at risk, how estimates have fallen and where BIP-360 stands.
#cryptography#security#upgrades
BitcoinIntermediateThe Lightning Network moves Bitcoin payments into two-party channels, so only opening and closing usually touch the blockchain. Learn how HTLCs route payments, why inbound capacity matters, what watchtowers do, what a force close costs, and its limits.
#scaling#transactions
BitcoinBeginnerBitcoin miners race to find a block hash below a network target and earn new coins plus fees. See how difficulty, pools and hashprice work, and a worked October 2026 example showing why a 200 TH/s machine needs power below about 9 cents per kWh.
#consensus#markets#mining
BitcoinBeginnerA spot ETF holds real bitcoin with a custodian while you own fund shares on a stock exchange. Authorized participants create and redeem shares to track NAV. Unlike self-custody, you can't send the coins or trade them 24/7.
#markets#regulation#wallets
BitcoinBeginnerEvery 210,000 blocks, about every four years, Bitcoin's new-coin subsidy to miners halves, capping supply just under 21 million. It slows issuance, squeezes miner revenue, and shifts more of the security budget onto fees.
#basics#consensus#mining
BitcoinBeginnerFor years, the spotlight in corporate Bitcoin adoption has focused on giants like MicroStrategy — companies raising billions in debt to fill their balance sheets with crypto. But a quieter, more sustainable revolution is taking shape: small and medium-sized businesses using Bitcoin not to gamble,…
#crypto
BitcoinBeginnerAt the America Business Forum in Miami, U.S. President Donald J. Trump renewed his call for stronger national leadership in cryptocurrency and blockchain innovation. During his keynote address, he outlined a vision to establish the United States as the world’s top hub for Bitcoin and digital…
#crypto
BitcoinBeginnerAfter making a strong debut in the United States, BlackRock is set to bring its iShares Bitcoin ETF to the Australian Securities Exchange (ASX) by mid-November 2025, marking a major step in the global expansion of its digital asset portfolio. This launch positions BlackRock, the world’s largest…
#crypto
BitcoinBeginnerCrypto & Global Markets UpdateBitcoin steadied around $109,000 on Friday as Asia-Pacific markets opened in positive territory, helped by upbeat momentum from Wall Street after strong tech-sector earnings. The calmer tone followed a volatile week for cryptocurrencies. Regional Markets Japan led the…
#crypto
BitcoinBeginnerB In a landmark decision that could alter the trajectory of European finance, France’s National Assembly has passed a resolution rejecting the European Central Bank’s (ECB) plan for a digital euro, instead voicing strong support for Bitcoin and euro-based stablecoins. The initiative, introduced on…
#crypto
BitcoinBeginnerCredit agency S&P Global Ratings has assigned a “B-” speculative-grade rating to Strategy — the company led by Michael Saylor — citing its deep reliance on Bitcoin holdings and limited diversification. The rating marks the first time a Bitcoin-focused treasury firm has received a formal credit…
#crypto
