Satoshis and BTC
See how the 100,000,000-satoshi unit scale maps to BTC and live fiat estimates.
Use the satoshi converter →Understand Bitcoin by following decisions, not buzzwords.
Start with self-custody, learn the recovery model, then use wallet research and live tools when a real decision needs numbers.
Start here
One map connects keys, backups, wallets and transactions.
The self-custody pillar explains the system first, so product pages are easier to evaluate later.
Core guideBitcoin self-custody
Private keys, wallet types, recovery material, transaction verification and a safer first-transfer workflow.
Beginner workflowHardware wallets for beginnersSetup, backup and first-transfer steps for dedicated signing hardware.
Choose a boundaryHardware vs software walletDecide whether convenience or stronger key isolation fits the role.
Core concepts
Learn the units and network mechanics you use every day.
These tools teach while they calculate.
Bitcoin transaction fees
Understand sat/vB, transaction size and why the BTC amount sent does not determine network fee size.
Check fees and learn →Self-custody basics
Understand what changes when no exchange account stands between you and transaction authorization.
Read the self-custody guide →Recovery path
Design the way back in before protecting a large balance.
Recovery is not an afterthought; it is part of the custody architecture.
Back up a hardware wallet safely
Protect recovery material against both online disclosure and physical loss.
Build a backup plan →Seed phrase vs passphrase
Understand the recovery foundation and the advanced optional secret that can create a separate wallet.
Compare recovery secrets →What if the hardware wallet breaks?
Separate device failure from recovery failure and understand what must remain available.
Plan for device failure →Hardware-wallet security checklist
Use a vendor-neutral baseline for buying, backup, signing and phishing resistance.
Open the security checklist →Wallet research
Compare products only after the custody model is clear.
No paid ranking is active. Direct manufacturer sources and editorial boundaries stay visible.
Hardware-wallet research
Browse all wallet guides, recovery topics, reviews and device comparisons.
Open Wallets hub →Trezor vs Ledger
Compare transparency, signing hardware, connectivity and recovery choices.
Compare trust models →How to choose a hardware wallet
Turn threat model, recovery, connectivity and transparency requirements into a shortlist.
Build a shortlist →Trezor review
Current Safe lineup, open-source device software and Bitcoin-only options.
Read Trezor review →Ledger review
Ledger OS, Secure Element model, touchscreen devices and recovery options.
Read Ledger review →Apply the concepts
Use numbers when the decision actually needs numbers.
Calculators run in the browser; live Bitcoin market and network data is served through the LemonBitcoin API.
Satoshi converter
Sats ↔ BTC with live USD/EUR estimates.
Convert sats →Bitcoin fee calculator
Live sat/vB recommendations and transaction-cost estimates.
Check fees →DCA calculator
Model recurring buys from an average acquisition price without a return promise.
Open DCA calculator →Profit calculator
Calculate position value, profit/loss and ROI from explicit inputs.
Open profit calculator →Income & payments
Learn where Bitcoin income actually comes from.
Work, rewards and mining have different economics. Start at the Earn hub, then open the guide that matches the actual source of income or risk.
Earn Bitcoin without hype
Separate payment for value from rewards, mining and promotional claims.
Open the Earn hub →Get paid in Bitcoin
Understand invoices, on-chain and Lightning settlement, custody and practical payment boundaries.
Read the work guide →Cashback and rewards
Compare the headline reward with fees, markup, withdrawal minimums and eligibility.
Check reward economics →Mining economics
Model electricity, hardware, difficulty and pool assumptions before treating mining as income.
Study mining economics →Earning scams and red flags
Recognize guaranteed-return claims, advance-fee traps, impersonation and requests for recovery secrets.
Review scam signals →Compare exchanges
Check fees, withdrawals, custody and regional evidence when a payout uses a custodial venue.
Compare venue evidence →Primary sources first
Product and recovery claims link to manufacturer documentation where practical.
Visible review dates
Pages with changing product facts show when the important claims were checked.
No hidden certainty
Calculators expose assumptions; editorial pages avoid guaranteed-profit language and paid ranking.