Read the whitepaper as an argument
Follow the problem, assumptions and proposed mechanism.
About 14 minutes with practice · Marked complete
Sikh Bitcoin · Advanced · 21 lessons
Bitcoin Deep Dive
For curious builders and Bitcoin maxis who want to verify the details: transactions, consensus, wallet standards, nodes and Lightning.
21 lessons · About 5 hours including practice. Comfort with Foundations, basic arithmetic and technical vocabulary. All lessons remain open.
What you will be able to do
Trace Bitcoin’s technical rules and distinguish consensus, policy and operational assumptions.
Read in order or explore a question. Exercises and quizzes work without an account; no answers are sent to us.
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Your 21-lesson path
Read lesson
Hashes and Merkle commitments
Learn what a compact commitment establishes—and what it does not.
About 14 minutes with practice · Marked complete
UTXOs, change and accounting
Read a transaction as a set of consumed and created outputs.
About 14 minutes with practice · Marked complete
Scripts describe spending conditions
Understand programmability without assuming an account-based model.
About 14 minutes with practice · Marked complete
Signatures and what they authorize
A valid signature is only as meaningful as the message it covers.
About 14 minutes with practice · Marked complete
Block headers and the chain of work
Trace how compact headers bind a transaction history.
About 14 minutes with practice · Marked complete
Difficulty, hashrate and noisy observations
Separate a protocol target from an inferred network measurement.
About 14 minutes with practice · Marked complete
Issuance, fees and incentives
Understand rules without converting them into a price promise.
About 14 minutes with practice · Marked complete
Mempools and policy are not consensus
Understand why nodes can disagree about pending transactions.
About 14 minutes with practice · Marked complete
Fee changes: RBF and CPFP
Understand two mechanisms before relying on a rescue button.
About 14 minutes with practice · Marked complete
SegWit and transaction weight
Connect a structural change to practical fee accounting.
About 14 minutes with practice · Marked complete
Taproot and Schnorr: useful, not magical
Understand spend paths and the boundaries of privacy gains.
About 14 minutes with practice · Marked complete
HD wallets and derivation paths
Understand reproducible keys without mistaking xpubs for harmless data.
About 14 minutes with practice · Marked complete
PSBT: separate construction from signing
Follow a portable transaction through distinct responsibilities.
About 14 minutes with practice · Marked complete
Descriptors make a wallet policy portable
Preserve the information that turns keys into the intended outputs.
About 14 minutes with practice · Marked complete
Full nodes, pruning and verification
Understand the difference between validating history and retaining every byte.
About 14 minutes with practice · Marked complete
Reorganizations and lightweight evidence
Understand why history observations have different strengths.
About 14 minutes with practice · Marked complete
Lightning channels and HTLCs
Follow conditional payments without assuming trusted routing intermediaries.
About 14 minutes with practice · Marked complete
Lightning liquidity has direction
Capacity is not the same as the ability to receive.
About 14 minutes with practice · Marked complete
Soft forks, proposals and human coordination
Distinguish code, signaling and actual rule enforcement.
About 14 minutes with practice · Marked complete
Capstone: trace a payment end to end
Build a technically honest verification map.
About 14 minutes with practice · Marked complete
AI-assisted educational material. Sources checked October 1, 2026; independent curriculum review is pending. The final capstone is a self-directed exercise, not a credential or permission to transact.