The Bitcoin Dev Project https://bitcoindevs.xyz/learn Find your way in bitcoin open source en-us BDP BDP Sat, 22 Feb 2025 15:32:14 GMT https://bitcoindevs.xyz/learn/hash-functions Hash Functions https://bitcoindevs.xyz/learn/hash-functions Sat, 22 Feb 2025 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/p2ms-exercise-1 Exercise 1: Medium https://bitcoindevs.xyz/learn/p2ms-exercise-1 Tue, 22 Oct 2024 10:00:00 GMT BDP https://bitcoindevs.xyz/learn/p2sh-exercise-1 Exercise 1: Medium https://bitcoindevs.xyz/learn/p2sh-exercise-1 Tue, 15 Oct 2024 10:00:00 GMT BDP https://bitcoindevs.xyz/learn/p2pkh-exercise1 Exercise 1: Medium https://bitcoindevs.xyz/learn/p2pkh-exercise1 Tue, 08 Oct 2024 10:00:00 GMT BDP https://bitcoindevs.xyz/learn/p2pk-exercise1 Exercise 1: Easy https://bitcoindevs.xyz/learn/p2pk-exercise1 Mon, 07 Oct 2024 10:00:00 GMT BDP https://bitcoindevs.xyz/learn/p2pk-exercise2 Exercise 2: Medium https://bitcoindevs.xyz/learn/p2pk-exercise2 Mon, 07 Oct 2024 10:00:00 GMT BDP https://bitcoindevs.xyz/learn/p2pk-exercise3 Exercise 3: Hard https://bitcoindevs.xyz/learn/p2pk-exercise3 Sat, 05 Oct 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/p2pk-problems Bonus: Problems with P2PK https://bitcoindevs.xyz/learn/p2pk-problems Sat, 05 Oct 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/p2pk P2PK - Pay To Public Key https://bitcoindevs.xyz/learn/p2pk Sat, 05 Oct 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/p2pkh-exercise2 Exercise 2: Hard https://bitcoindevs.xyz/learn/p2pkh-exercise2 Sat, 05 Oct 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/p2pkh P2PKH - Pay To Public Key Hash https://bitcoindevs.xyz/learn/p2pkh Mon, 15 Jul 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/welcome Welcome! https://bitcoindevs.xyz/learn/welcome Sun, 07 Jul 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/bitcoin-history Bitcoin History https://bitcoindevs.xyz/learn/bitcoin-history Fri, 05 Jul 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/newsletter Newsletter https://bitcoindevs.xyz/learn/newsletter Fri, 05 Jul 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/bitcoin-opcodes Opcodes https://bitcoindevs.xyz/learn/bitcoin-opcodes Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/compact-size Compact Size https://bitcoindevs.xyz/learn/compact-size Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/cpfp Child Pay For Parent (CPFP) https://bitcoindevs.xyz/learn/cpfp Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/endianness Endianness https://bitcoindevs.xyz/learn/endianness Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/fee-calculation Fee Calculation https://bitcoindevs.xyz/learn/fee-calculation Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/fee-rate Fee Rate https://bitcoindevs.xyz/learn/fee-rate Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/inputs-inputcount Input count https://bitcoindevs.xyz/learn/inputs-inputcount Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/inputs-output-index Inputs: Output Index (vout) https://bitcoindevs.xyz/learn/inputs-output-index Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/inputs-prev-txid Inputs: Previous txid https://bitcoindevs.xyz/learn/inputs-prev-txid Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/inputs-scriptsig Inputs: ScriptSig https://bitcoindevs.xyz/learn/inputs-scriptsig Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/inputs-scriptsigsize Inputs: ScriptSig Size https://bitcoindevs.xyz/learn/inputs-scriptsigsize Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/inputs-sequence Sequence https://bitcoindevs.xyz/learn/inputs-sequence Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/introduction-taproot Introduction to Taproot https://bitcoindevs.xyz/learn/introduction-taproot Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/locking-unlocking Locking & unlocking 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https://bitcoindevs.xyz/learn/outputs-scriptpubkey-size Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/outputs-scriptpubkey Outputs: ScriptPubKey https://bitcoindevs.xyz/learn/outputs-scriptpubkey Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/overview Overview https://bitcoindevs.xyz/learn/overview Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/p2ms-exercise-2 Exercise 2: Hard https://bitcoindevs.xyz/learn/p2ms-exercise-2 Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/p2ms P2MS - Pay To Multisig https://bitcoindevs.xyz/learn/p2ms Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/p2sh-exercise-2 Exercise 2: Hard https://bitcoindevs.xyz/learn/p2sh-exercise-2 Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/p2sh P2SH - Pay To Script Hash (BIP 16) https://bitcoindevs.xyz/learn/p2sh Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/pushdata-opcodes PushData Opcodes https://bitcoindevs.xyz/learn/pushdata-opcodes Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/quiz Test your knowledge https://bitcoindevs.xyz/learn/quiz Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/rbf Replace-By-Fee (RBF) https://bitcoindevs.xyz/learn/rbf Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/reorg-calculator Reorg Calculator https://bitcoindevs.xyz/learn/reorg-calculator Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/roadmap Roadmap https://bitcoindevs.xyz/learn/roadmap Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/schnorr-signature Schnorr Signature https://bitcoindevs.xyz/learn/schnorr-signature Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/script-success-failure Script Success and failure https://bitcoindevs.xyz/learn/script-success-failure Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/stack Stack https://bitcoindevs.xyz/learn/stack Thu, 25 Jan 2024 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https://bitcoindevs.xyz/learn/transaction-lifecycle Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/transaction-signing Signing Transactions https://bitcoindevs.xyz/learn/transaction-signing Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/transaction-structure Transaction Structure https://bitcoindevs.xyz/learn/transaction-structure Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/transaction-weight Transaction Weight https://bitcoindevs.xyz/learn/transaction-weight Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/transaction_exercises Exercises (GitHub Classroom) https://bitcoindevs.xyz/learn/transaction_exercises Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/utxo UTXO vs Account Models https://bitcoindevs.xyz/learn/utxo Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/version Version https://bitcoindevs.xyz/learn/version Thu, 25 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/transaction-signing-00 Step 0: Create Base Transaction https://bitcoindevs.xyz/learn/transaction-signing-00 Thu, 25 Jan 2024 00:00:00 GMT BDP https://bitcoindevs.xyz/learn/transaction-signing-01 Step 1: Create Transaction Inputs https://bitcoindevs.xyz/learn/transaction-signing-01 Thu, 25 Jan 2024 00:00:00 GMT BDP https://bitcoindevs.xyz/learn/transaction-signing-02 Step 2: Create Transaction Outputs https://bitcoindevs.xyz/learn/transaction-signing-02 Thu, 25 Jan 2024 00:00:00 GMT BDP https://bitcoindevs.xyz/learn/transaction-signing-03 Step 3: Generating the ScriptCode https://bitcoindevs.xyz/learn/transaction-signing-03 Thu, 25 Jan 2024 00:00:00 GMT BDP https://bitcoindevs.xyz/learn/transaction-signing-04 Step 4: Calculate Transaction Digest Components https://bitcoindevs.xyz/learn/transaction-signing-04 Thu, 25 Jan 2024 00:00:00 GMT BDP https://bitcoindevs.xyz/learn/transaction-signing-05 Step 5: Calculate Preimage and Sighash https://bitcoindevs.xyz/learn/transaction-signing-05 Thu, 25 Jan 2024 00:00:00 GMT BDP https://bitcoindevs.xyz/learn/transaction-signing-06 Step 6: Generate and Encode the Signature https://bitcoindevs.xyz/learn/transaction-signing-06 Thu, 25 Jan 2024 00:00:00 GMT BDP https://bitcoindevs.xyz/learn/transaction-signing-07 Step 7: Add Witness Field https://bitcoindevs.xyz/learn/transaction-signing-07 Thu, 25 Jan 2024 00:00:00 GMT BDP https://bitcoindevs.xyz/learn/transaction-signing-08 Step 8: Final Transaction Structure https://bitcoindevs.xyz/learn/transaction-signing-08 Thu, 25 Jan 2024 00:00:00 GMT BDP https://bitcoindevs.xyz/learn/transaction-signing-09 Step 9: Common Errors https://bitcoindevs.xyz/learn/transaction-signing-09 Thu, 25 Jan 2024 00:00:00 GMT BDP https://bitcoindevs.xyz/learn/interactive-roadmap Interactive Bitcoin Development Roadmap https://bitcoindevs.xyz/learn/interactive-roadmap Sat, 20 Jan 2024 15:32:14 GMT BDP https://bitcoindevs.xyz/learn/implement-OP_CHECKSIG 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05 Jan 2024 15:32:14 GMT BDP