Bitcoin Basic OP_CODEs

Let's enjoy Bitcoin OP_CODEs!

Transcript

1. BITCOIN BASIC OP_CODES @usatie
2. WHAT IS BITCOIN? WHAT IS BITCOIN? ▸ Q1 : Bitcoinͱ͸ʁ ▸ A1 : վ᜵Ͱ͖ͳ͍σʔλϕʔε ▸ Q2 : ԿΛอଘ͍ͯ͠Δʁ ▸ A2 : ৣ͕͔͔ͬͨίΠϯ
3. LOCK & UNLOCK BITCOIN LOCK & UNLOCK BITCOIN ▸ Lock Script : ίΠϯʹ伴Λ͔͚ΔͨΊͷεΫϦϓτ ▸ Unlock Script : ίΠϯͷ伴Λղৣ͢ΔͨΊͷεΫϦϓτ ▸ [Unlock Sceript] [Lock Script]ͷॱ൪ʹ࣮ߦͨ݁͠ՌɺTrue ͕ฦͬͯདྷΕ͹ͦͷίΠϯ͸࢖༻Մೳʂ ʢʹScriptPubkeyʣ ʢʹScriptSigʣ
4. WHAT IS STACK MACHINE? WHAT IS STACK MACHINE? ▸ BitcoinͷεΫϦϓτ͸ελοΫϚγϯ্Ͱ࣮ߦ͞ΕΔ ▸ ελοΫϚγϯͱ͸Կ͔͸ɺҎԼͷྫΛݟͯΈ·͠ΐ͏ʂ ▸ ex. [3] [20] [8] [ADD] [MUL] 8 20 3 28 3 84
5. SUCCESSFUL UNLOCK SUCCESSFUL UNLOCK ▸ [Unlock script] [Lock script]ͷॱ൪ʹ࣮ߦ͠ɺελοΫͷ࠷ޙʹTRUE͕ ࢒Ε͹ίΠϯͷղৣ͸੒ޭʂ ▸ Lock script : [2] [3][ADD] [EQUAL] ▸ Unlock script : [5] 3 2 5 5 5 TRUE
6. UNLOCK FAILURE UNLOCK FAILURE ▸ Lock script : [19] [2] [SUB] [EQUAL] ▸ Unlock script : [8] 2 19 8 17 8 FALSE
7. P2PK SCRIPT PAY TO PUBLIC KEY ▸ OP_CHECKSIG : (sig pubkey) -> TRUE/FALSE ▸ pubkeyʹରԠ͢Δൿີ伴Ͱॺ໊͞Εͨsig͔Ͳ͏͔ݕূ
8. P2PKH SCRIPT PAY TO PUBLIC KEY HASH ▸ OP_DUP : x -> x x ▸ OP_HASH160 : pubkey -> pubkeyHash ▸ OP_VERIFY : Ұ൪্͕TRUE͡Όͳ͔ͬͨΒଈ࠲ʹFail
9. LOCK UNTIL SCRIPT LOCK UNTIL ▸ OP_CHECKLOCKTIMEVERIFY : time -> time/Fail ▸ ΋͠ݱࡏ࣌ࠁ͕timeΑΓલͩͬͨΒଈ࠲ʹFail ▸ OP_DROP : Ұ൪্ͷσʔλΛ࡟আ
10. M-OF-N MULTISIG SCRIPT M-OF-N MULTISIG ▸ OP_CHECKMULTISIG : <sig1>…<sigN> M <pub1>… <pubN> N -> TRUE/FALSE ▸ Nݸͷpubkeyͷ͏ͪɺͦΕΒʹରԠ͢ΔMݸͷൿີ伴Ͱ ॺ໊Ͱ͖͍ͯΔ͔ݕূ
11. REFERENCE DOCUMENT AND SOURCECODE ▸ https://en.bitcoin.it/wiki/Script ▸ Bitcoin’s Source code src/script/interpreter.cpp