Bitcoin price
Loading…Bitcoin mainnetBlock ···Epoch 04
Bitcoin Atlas
Meridian 2140
Context for understanding Bitcoin
Meridian 2140 is a public educational and reference website about Bitcoin. It connects protocol rules, history, security, economics and people so readers can follow their relationships.
691Atlas entriesGenesis Block → ~2140 ↗Loading…Last response
Selected headlines from newsrooms, developers and institutions. Articles and excerpts remain in the original source language; the language choice changes the interface. Every link leads to the publisher.
01 Explore the connected entries
Bitcoin Atlas
Connected knowledge
The editorial methodology requires sources suited to each claim, a distinction between facts and interpretation, and acknowledgment of uncertainty. An author's authority or a source's inclusion alone is not proof of accuracy.
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Bitcoin history
Connect cypherpunk ideas and digital-cash experiments with the 2008 Bitcoin Whitepaper, the 2009 Genesis Block and later events.
Open entry02↗
Bitcoin economics
Distinguish issuance rules, bank-money creation and economic reasoning about scarcity, incentives or value. A verifiable limit is not a price forecast.
Open entry03↗
Protocol and network
Connect transactions and UTXO with Proof of Work, Full Node checks and the rules for selecting a valid history.
Open entry04↗
Adoption
Distinguish announcements, bitcoin holdings, payment acceptance and documented use. Check each figure’s metric, period, coverage and source.
Open entry05↗
Markets
Distinguish bitcoin, a share in an investment product and a provider account balance. Price, fees, withdrawals and reserve evidence answer different questions.
Open entry06↗
People
Explore authors, developers and thinkers through publications, code and contemporary records. Distinguish technical contributions, economic arguments and public opinions.
Open entry02 QUESTIONS PEOPLE ACTUALLY ASK
Bitcoin guides: from questions to verification.
Choose a question about Bitcoin, issuance, buying, wallets or Lightning Network. Each guide connects explanations, practical limitations, primary sources and related Atlas entries.
STARTSTART HERE · FROM BASICS TO SELF-CUSTODY
Your first bitcoin. Step by step.
A practical guide to buying, wallets, Seed Phrase and UTXO. The goal is to understand what you buy, try a small transfer to self-custody and verify recovery without disclosing secrets.
↗19Verification libraryDON’T TRUST. VERIFY.
Check Bitcoin yourself — from the whitepaper and SHA-256 to source code and your own node.
Open the verification library 21MRead the guideWhy are there only 21 million bitcoin?
From the block subsidy and Halving to the consensus code independently checked by Full Node software.
↗PoWRead the guideHow does Bitcoin Proof of Work work?
Understand hashes, mining difficulty and what Proof of Work can—and cannot—decide in Bitcoin.
↗₿Read the guideHow do you store bitcoin safely?
A threat-based guide to custody, signing devices, seed backups and recovery tests.
↗L2Read the guideHow does the Bitcoin Lightning Network work?
From payment channels and liquidity to routing, invoices and on-chain enforcement.
↗03 Bitcoin history
Bitcoin history: documents, people and milestones
Connect cypherpunk ideas and digital-cash experiments with the 2008 Bitcoin Whitepaper, the 2009 Genesis Block and later events.
BIP 110 mandatory signaling splits the chain
At height 961632, BIP-110-enforcing nodes reject Bitcoin's non-signaling most-work block and follow a signaling OCEAN block. The minority tip produces two blocks and then stalls, turning the activation attempt into a documented lesson about contentious soft-fork deployment.
04 PLACES · COMMUNITY MAP
Where bitcoin is accepted.
Find a place and check its terms.
Community-maintained BTC Map shows places recorded as accepting bitcoin. Meridian 2140 embeds an external map; it does not verify every business or guarantee that you can pay.
The USD price comes from CoinGecko or Coinbase; block height and estimated Hashrate come from mempool.space or Blockchain.com, depending on availability. Data may be cached and have different measurement times. The time above marks receipt of the last successful response, not the measurement time of every value. Estimated Hashrate is not a direct measurement; the price is not a trade offer and a public API does not replace verification with your own node.