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🔧 Programmierung 🕛 vor 2 Monaten 13 Min Lesezeit

How Bitcoin P2SH Scripts Work: From 2-of-3 Multisig to Timelocked Inheritance

↗ Quelle (dev.to)

📑 Inhaltsübersicht

▸ Chapter 3: P2SH Script Engineering — From Multi-signature to Time Locks
▸ 3.1 P2SH Architecture: Scripts Behind the Hash
▸ The Two-Stage Verification Model
▸ P2SH Address Generation Process
▸ ScriptSig Construction Pattern
▸ 3.2 Multi-signature Treasury: 2-of-3 Corporate Security
▸ Business Scenario: Startup Treasury Management
▸ Multi-signature Script Construction
▸ bitcoinutils Function Analysis
▸ Spending the Multi-signature UTXO
▸ bitcoinutils Signature Functions
▸ Multi-signature Stack Execution Analysis
▸ Phase 1: ScriptSig + ScriptPubKey Execution
▸ 1. PUSH OP_0: Multisig bug workaround
▸ 2. PUSH Alice’s Signature: First authorization
▸ 3. PUSH Bob’s Signature: Second authorization
▸ 4. PUSH Redeem Script: Reveal the spending conditions
▸ 5. OP_HASH160: Verify script hash matches
▸ 6. PUSH Expected Hash: From locking script
▸ 7. OP_EQUAL: Confirm hash match
▸ P2SH Transition: Stack Reset Mechanism
▸ Phase 2: Redeem Script Execution
▸ 8. OP_2: Push required signature count
▸ 9–11. PUSH Public Keys: Load verification keys
▸ 12. OP_3: Push total key count
▸ 13. OP_CHECKMULTISIG: Verify signatures
▸ Final State: Multisig Verification Complete
▸ 3.3 Time-Locked Inheritance: CSV-Enhanced P2SH
▸ Real-World Implementation: 3-Block Time Lock
▸ CSV Script Construction
▸ bitcoinutils CSV Functions
▸ Spending the Time-Locked UTXO
▸ CSV Stack Execution Analysis
▸ Phase 1: P2SH Hash Verification
▸ Phase 2: CSV + P2PKH Execution
▸ 1. PUSH 3: Time delay requirement
▸ 2. OP_CHECKSEQUENCEVERIFY: Verify time lock
▸ 3. OP_DROP: Remove delay value
▸ 4. OP_DUP: Begin P2PKH verification
▸ 5. OP_HASH160: Hash public key
▸ 6. PUSH Expected Hash: From redeem script
▸ 7. OP_EQUALVERIFY: Confirm hash match
▸ 8. OP_CHECKSIG: Final signature verification
▸ Time Lock Error Handling
▸ CSV Applications
▸ 3.4 P2SH vs P2PKH: Evolution of Script Complexity
▸ P2SH’s Inherent Limitations
▸ Chapter Summary

Excerpt from my book Mastering Taproot — full chapter.

CODE

HODLing is the beginning.

But Bitcoin was meant to be programmed.



"Not Just HODLing: Real Bitcoin Script Engineering" starts here.

This article is an excerpt from my upcoming book Mastering Taproot, which explores the engineering principles behind Bitcoin’s most advanced scripting upgrade. You can follow the full book’s progress or purchase early-access chapters here:

👉

📩 You can also follow my updates on Twitter: [)

By .

on July 3, 2026.

Vollständiger Original-Artikel

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