Block Chain

Transcript

1. Block Chain Ethereum & Solidity
2. What is Block Chain? JD -> MJ 70,000 Won Mati -> Ben 10,000 Won ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
3. What is Block Chain? JD -> MJ 70,000 Won Mati -> Ben 10,000 Won … … ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
4. What is Block Chain? JD -> MJ 70,000 Won Mati -> Ben 10,000 Won … … JD -> MJ 70,000 Won Mati -> Ben 10,000 Won … … JD -> MJ 70,000 Won Mati -> Ben 10,000 Won … … ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
5. What is Block Chain? JD -> MJ 70,000 Won Mati -> Ben 10,000 Won … … JD -> MJ 700,000 Won Mati -> Ben 10,000 Won … … JD -> MJ 70,000 Won Mati -> Ben 10,000 Won … … ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
6. What is Block Chain? JD -> MJ 70,000 Won Mati -> Ben 10,000 Won … … JD -> MJ 700,000 Won Mati -> Ben 10,000 Won … … JD -> MJ 70,000 Won Mati -> Ben 10,000 Won … … ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
7. What is Block Chain? ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
8. What is Block Chain? ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
9. What is Block Chain? ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
10. What is Block Chain? ࠶۾җ ࠶۾ਸ ୓ੋഋక(Linked List)۽ োѾೠ ੗ܐҳઑ ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ ୹୊ : https://namu.wiki/w/࠶۾୓ੋ ࠙࢑
    ஹೊ౴
    ӝࣿ
    ӝ߈੄
    ؘ੉ఠ
    ਤ߸ઑ
    ߑ૑
    ӝࣿ
    
    
    ҙܻ
    ؀࢚
    ؘ੉ఠܳ
    r࠶۾ղী
    ੷੢ೞҊ
    Ӓ
    ࠶۾ਸ
    ୓ੋ
    ഋక੄
    োѾҊܻ
    ӝ߈
    ࠙࢑
    ؘ੉ఠ
    ੷੢ജ҃ী
    ੷੢ೞৈ
    
    
    
    ־ҳب
    ੐੄۽
    ࣻ੿ೡ
    ࣻ
    হҊ
    ־ҳա
    ߸҃੄
    Ѿҗܳ
    ৌۈೡ
    ࣻ
    ੓ח
    Ѫ੉
    ౠ૚੉׮
    
    
    ࠶۾਷
    ߊѼػ
    զ૞৬
    ੉੹
    ࠶۾ী
    ؀ೠ
    োѾҊܻܳ
    о૑ݴ
    ੉۞ೠ
    ࠶۾ٜ੄
    ૘೤ਸ
    ࠶۾୓ੋ੉ۄ
    டೠ׮
    
    
    
    औѱ
    ݈ೞ੗ݶ
    ݆ࣻ਷
    ӝ۾ਸ
    Ӓր
    ೠ
    ޘ਺ਵ۽
    ٜ݅য
    ߡܻח
    ӝࣿ੉׮
    
    
    ӝઓী
    ੹੗ചತ۽
    Ѣېೡ
    ٸ
    ઺ঔ
    ࢲߡী
    Ѣې
    ӝ۾ਸ
    ࠁҙೞח
    Ѫҗח
    ׳ܻ
    ࠶۾୓ੋ਷
    ݽٚ
    ࢎਊ੗ীѱ
    Ѣې
    ӝ۾ਸ
    ࠁৈ઱ݴ
    
    
    
    ࢲ۽
    ࠺Ү೧
    ਤઑܳ
    ݄ח׮
    
    
    ࠺౟௏ੋ੉
    ࠶۾୓ੋ੉ۄח
    ѐ֛ਸ
    ୊਺
    पૐೞ৓Ҋ
    &UIFSFVN੉
    झ݃౟
    ஶ౟ۑ౟ۄח
    ѐ֛ਸ
    ୊਺
    ҳഅೠ
    Ѫীࢲ
    ࠅ
    ࣻ
    ੓٠
    
    
    
    ࠶۾୓ੋҗ
    ঐഐചತ
    ࢎ੉ীח
    ޻੽ೠ
    ҙ҅о
    ੓׮
    
11. What is Block Chain? ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
    
    ҙܻ
    ؀࢚
    ؘ੉ఠܳ
    r࠶۾ղী
    ੷੢ೞҊ
    Ӓ
    ࠶۾ਸ
    ୓ੋ
    ഋక੄
    োѾҊܻ
    ӝ߈
    ࠙࢑
    ؘ੉ఠ
    ੷੢ജ҃ী
    ੷੢ೞৈ
    
    
    
    ־ҳب
    ੐੄۽
    ࣻ੿ೡ
    ࣻ
    হҊ
    ־ҳա
    ߸҃੄
    Ѿҗܳ
    ৌۈೡ
    ࣻ
    ੓ח
    Ѫ੉
    ౠ૚੉׮
    
    
    ࠶۾਷
    ߊѼػ
    զ૞৬
    ੉੹
    ࠶۾ী
    ؀ೠ
    োѾҊܻܳ
    о૑ݴ
    ੉۞ೠ
    ࠶۾ٜ੄
    ૘೤ਸ
    ࠶۾୓ੋ੉ۄ
    டೠ׮
    
    
    
    औѱ
    ݈ೞ੗ݶ
    ݆ࣻ਷
    ӝ۾ਸ
    Ӓր
    ೠ
    ޘ਺ਵ۽
    ٜ݅য
    ߡܻח
    ӝࣿ੉׮
    
    
    ӝઓী
    ੹੗ചತ۽
    Ѣېೡ
    ٸ
    ઺ঔ
    ࢲߡী
    Ѣې
    ӝ۾ਸ
    ࠁҙೞח
    Ѫҗח
    ׳ܻ
    ࠶۾୓ੋ਷
    ݽٚ
    ࢎਊ੗ীѱ
    Ѣې
    ӝ۾ਸ
    ࠁৈ઱ݴ
    
    
    
    ࢲ۽
    ࠺Ү೧
    ਤઑܳ
    ݄ח׮
    
    
    ࠺౟௏ੋ੉
    ࠶۾୓ੋ੉ۄח
    ѐ֛ਸ
    ୊਺
    पૐೞ৓Ҋ
    &UIFSFVN੉
    झ݃౟
    ஶ౟ۑ౟ۄח
    ѐ֛ਸ
    ୊਺
    ҳഅೠ
    Ѫীࢲ
    ࠅ
    ࣻ
    ੓٠
    
    
    
    ࠶۾୓ੋҗ
    ঐഐചತ
    ࢎ੉ীח
    ޻੽ೠ
    ҙ҅о
    ੓׮
    ࠶۾җ ࠶۾ਸ ୓ੋഋక(Linked List)۽ োѾೠ ੗ܐҳઑ ୹୊ : https://namu.wiki/w/࠶۾୓ੋ
    
    ࠶۾ਸ
    ୓ੋ
    ഋక੄
    োѾҊܻ
    ӝ߈
    ࠙࢑
    ؘ੉ఠ
    ੷੢ജ҃ী
    ੷੢ೞৈ
    
    
    
    
    ־ҳب
    ੐੄۽
    ࣻ੿ೡ
    ࣻ
    হҊ
    ־ҳա
    ߸҃੄
    Ѿҗܳ
    ৌۈೡ
    ࣻ
    ੓ח
    Ѫ੉
    ౠ૚੉׮
    
    
    ࠶۾਷
    ߊѼػ
    զ૞৬
    ੉੹
    ࠶۾ী
    ؀ೠ
    োѾҊܻܳ
    о૑ݴ
    ੉۞ೠ
    ࠶۾ٜ੄
    ૘೤ਸ
    ࠶۾୓ੋ੉ۄ
    டೠ׮
    
    
    
    
    
    
    ࠶۾୓ੋ਷
    ݽٚ
    ࢎਊ੗ীѱ
    Ѣې
    ӝ۾ਸ
    ࠁৈ઱ݴ
    ࢲ۽
    ࠺Ү೧
    ਤઑܳ
    ݄ח׮
    ࠙࢑
    ஹೊ౴
    ӝࣿ
    ӝ߈੄
    ؘ੉ఠ
    ਤ߸ઑ
    ߑ૑
    ӝࣿ
12. What is Block Chain? JD -> MJ … … … … … … … … ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
13. What is Block Chain? MJ - … … … … … … … … MJ - … … … … … … … … MJ - … … … … … … … … MJ -> … … … … … … … … ݽٚ Ѣې(transaction) ੿ࠁܳ ನೣೞח Ѣ؀ೠ ࠙࢑ ੢ࠗ ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
14. What is Block? Hash of the block (hash) ߡ੹ (Version) ੉੹ ࠶۾ ೧द (Previous Block Hash) ݠ௿ܖ౟ (Merkle Root) ఋ੐ (Time) դ੉ب ݾ಴ (bits, target) ֤झ (Nonce) Ѣې ஠਍౟ / ETC Transaction #1 Transaction #2 Transaction #3 … Transaction #N Header Body ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
15. What is Block? Hash of the block (hash) ߡ੹ (Version) ੉੹ ࠶۾ ೧द (Previous Block Hash) ݠ௿ܖ౟ (Merkle Root) ఋ੐ (Time) դ੉ب ݾ಴ (bits, target) ֤झ (Nonce) Ѣې ஠਍౟ / ETC Transaction #1 Transaction #2 Transaction #3 … Transaction #N Header Body ࠶۾ ೧द (Hash of the block) - औѱ ݈ೞݶ ‘࠶۾’੄ ੉ܴ ੿ࠁ - ࠶۾੄ ೻؊ ੿ࠁٜ (ߡ੹ + ੉੹ ࠶۾ ೧द + ݠ௿ܖ౟ + ఋ੐ + bits + nonce)੄ ೤࢑ ੿ࠁܳ ҳೠ റ, SHA256ਵ۽ ߸ജೞৈ ࠶۾੄ ೧द чਸ ҳೡ ࣻ ੓׮. ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
16. What is Block? Header Body Hash of the block (hash) ߡ੹ (Version) ੉੹ ࠶۾ ೧द (Previous Block Hash) ݠ௿ܖ౟ (Merkle Root) ఋ੐ (Time) դ੉ب ݾ಴ (bits, target) ֤झ (Nonce) Ѣې ஠਍౟ / ETC Transaction #1 Transaction #2 Transaction #3 … Transaction #N ߡ੹ (Version) - ೧׼ ࠶۾੄ ߡ੹ ч. - ࠶۾੉ ٜ݅য૕ ٸী ࢎਊػ ׮নೠ ೒ۖಬ੄ ߡ੹ ч੉ ٜযо੓׮Ҋ ࢤпೞݶ ؽ. - ৈӝࢲ ׮নೠ ೒ۖಬ਷ ੉؊ܻ਑(Ethereum), ࠺౟௏ੋ(BitCoin), ੉য়झ(Eos) ١ਸ ੄޷ ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
17. What is Block? Header Body Hash of the block (hash) ߡ੹ (Version) ੉੹ ࠶۾ ೧द (Previous Block Hash) ݠ௿ܖ౟ (Merkle Root) ఋ੐ (Time) դ੉ب ݾ಴ (bits, target) ֤झ (Nonce) Ѣې ஠਍౟ / ETC Transaction #1 Transaction #2 Transaction #3 … Transaction #N ੉੹ ࠶۾ ೧द (Previous Block Hash) - ੉੹ ࠶۾੄ ೧ए ч(hash)ਸ оܻఃח ઱ࣗчਸ ੷੢ ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
18. What is Block? Hash of the block (hash) ߡ੹ (Version) ੉੹ ࠶۾ ೧द (Previous Block Hash) ݠ௿ܖ౟ (Merkle Root) ఋ੐ (Time) դ੉ب ݾ಴ (bits, target) ֤झ (Nonce) Ѣې ஠਍౟ / ETC Transaction #1 Transaction #2 Transaction #3 … Transaction #N Hash of the block (hash) ߡ੹ (Version) ੉੹ ࠶۾ ೧द (Previous Block Hash) ݠ௿ܖ౟ (Merkle Root) ఋ੐ (Time) դ੉ب ݾ಴ (bits, target) ֤झ (Nonce) Ѣې ஠਍౟ / ETC Transaction #1 Transaction #2 Transaction #3 … Transaction #N Hash of the block (hash) ߡ੹ (Version) ੉੹ ࠶۾ ೧द (Previous Block Hash) ݠ௿ܖ౟ (Merkle Root) ఋ੐ (Time) դ੉ب ݾ಴ (bits, target) ֤झ (Nonce) Ѣې ஠਍౟ / ETC Transaction #1 Transaction #2 Transaction #3 … Transaction #N ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
19. What is Block? Header Body Hash of the block (hash) ߡ੹ (Version) ੉੹ ࠶۾ ೧द (Previous Block Hash) ݠ௿ܖ౟ (Merkle Root) ఋ੐ (Time) դ੉ب ݾ಴ (bits, target) ֤झ (Nonce) Ѣې ஠਍౟ / ETC Transaction #1 Transaction #2 Transaction #3 … Transaction #N ݠ௿ ܖ౟ (Merkle Root) - ݠ௿ ౟ܻ(Merkle Tree)੄ ܖ౟ ֢٘(Root Node)ী ؀ೠ hash ч੉ ٜযо ੓׮. - Ӓۧӝ ٸޙী ೠ ࠶۾ ղী ٜয੓ח ౟ے੥࣌(TX)ٜ ઺ীࢲ ೞա݅ ߸ഋ੉ غযب 
 ݠ௿ܖ౟ ч੉ ߄Պਸ ੋ૑ೞѱ غয ਤ߸ઑܳ ݄ਸ ࣻ ੓਺. - ೧दо ੉ਊػ ؘ੉ఠ Ѩૐਸ ਤ೧ ࢎਊೞח ੗ܐҳઑ => ݠ௿ ౟ܻ 
 * ݠ௿ ౟ܻ੄ ݾ੸ : ؘ੉ఠ੄ рಞೞҊ ഛपೠ ੋૐਸ ਤ೧ ࢎਊ ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
20. What is Merkle Tree? ޖѾࢿ, ए਍ ѢېѨૐ : Merkle Node (=Light Node) fg ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
21. What is Merkle Tree? ޖѾࢿ, ए਍ ѢېѨૐ TX6 cdef fg cd mkdi mk poiu : Merkle Node (=Light Node) ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
22. What is Block? Header Body Hash of the block (hash) ߡ੹ (Version) ੉੹ ࠶۾ ೧द (Previous Block Hash) ݠ௿ܖ౟ (Merkle Root) ఋ੐ (Time) դ੉ب ݾ಴ (bits, target) ֤झ (Nonce) Ѣې ஠਍౟ / ETC Transaction #1 Transaction #2 Transaction #3 … Transaction #N ݠ௿ ܖ౟ (Merkle Root) - ݠ௿ ౟ܻ(Merkle Tree)੄ ܖ౟ ֢٘(Root Node)ী ؀ೠ hash ч੉ ٜযо ੓׮. - Ӓۧӝ ٸޙী ೠ ࠶۾ ղী ٜয੓ח ౟ے੥࣌(TX)ٜ ઺ীࢲ ೞա݅ ߸ഋ੉ غযب 
 ݠ௿ܖ౟ ч੉ ߄Պਸ ੋ૑ೞѱ غয ਤ߸ઑܳ ݄ਸ ࣻ ੓਺. - ೧दо ੉ਊػ ؘ੉ఠ Ѩૐਸ ਤ೧ ࢎਊೞח ੗ܐҳઑ => ݠ௿ ౟ܻ 
 * ݠ௿ ౟ܻ੄ ݾ੸ : ؘ੉ఠ੄ рಞೞҊ ഛपೠ ੋૐਸ ਤ೧ ࢎਊ ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
23. What is Block? Header Body Hash of the block (hash) ߡ੹ (Version) ੉੹ ࠶۾ ೧द (Previous Block Hash) ݠ௿ܖ౟ (Merkle Root) ఋ੐ (Time) դ੉ب, ݾ಴ (bits, target) ֤झ (Nonce) Ѣې ஠਍౟ / ETC Transaction #1 Transaction #2 Transaction #3 … Transaction #N դ੉ب, ݾ಴ (bits, target) & ֤झ (Nonce) - ےؒೞѱ ࢤࢿغח ֤झ(Nonce)чਸ ഝਊೞৈ, ݾ಴ ೧दч(դ੉ب)ࠁ׮ ؊ ੘਷ ࠶۾ ೧दчਸ ଺ח җ੿ => ଻ҷ - դ੉ب ч਷ ੉੹ ࠶۾ٜ੄ ࢤࢿदрਸ ౸ױ೧ ੗زਵ۽ դ੉بܳ ઑ੿ೡ ࣻ ੓ѱ ࢸ҅غয ੓਺. ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
24. What is POW? ੘সૐݺߑध (Proof Of Work) - ো࢑ מ۱੉ ࡅܲ ଻ҷ੗о ো࢑מ۱੄ ҃੬ীࢲ थܻೞৈ TXܳ ੷੢ೡ ࣻ ੓ח ࠶۾ਸ ഛࠁೣ - ഛࠁೞѱ غݶ wait ࢚క੉؍ TX֢ٜ٘ਸ оઉ৬ࢲ nonceчਸ ଺ই ࠶۾ਸ ଻ҷೡ ӝഥܳ ঳਺ => ࠁ࢚ : ࣻࣻܐ + ௏ੋ ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
25. What is POW? ੘সૐݺߑध (Proof Of Work) दաܻয় ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ Zune੄ ੹੗૑цীࢲ ౟ے੥࣌(TX)੉ ߊࢤ (Zune->Ethanীѱ 1 BTC ੹׳.)
 Zune੄ ੉ਓҙ҅ী ੓ח ࢎۈٜࠗఠ ࣽର੸ਵ۽ TX੉ ҕਬغয ݻ ୡ ղী ݽٚ ੉ਓীѱ ೧׼ TX ҕਬ
 (ೠಞ,,,) ଻ҷӝܳ о૓ Benҗ Matiо ౟ے੥࣌ਸ ੷੢ೡ ࠶۾ਸ ଻ҷ ݻ ࠙ റ, ଻ҷ੗(Miner)ੋ Ben੉ જ਷ ଻ҷӝ ؋࠙ী ଻ҷ҃੬ীࢲ थܻೞৈ ࠶۾ਸ ࢤࢿ (POW) ੉ ٸ Matiо ଻ҷਸ ՘ղҊ ࠶۾ਸ ଺ও૑݅ ੉޷ Zune੄ TXח Benীѱ ੷੢ؽ.
 Ben੄ ࠶۾ী ੷੢ؼ TXٜਸ ನೣೞৈ Ѩૐ੉ ৮ܐغݶ ࠶۾ਸ public ֎౟ਕ௼ী োѾ Ben੉ о૑Ҋ ੓ח local ࠶۾୓ੋ ֎౟ਕ௼ী ࢜۽ ࢤӟ Ben੄ ࠶۾ਸ োѾ

26. What is POW? ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
27. ࠶۾୓ੋ੄ ഝਊ ੿ࠁ੹׳ VS о஖੹׳ ੿ࠁ੹׳ - ਷೯о஖ী ೧׼ೞח ੿ࠁٜ݅ ੹׳೮׮. ex) ୹Ә, ੑӘী ؀ೠ ӝ۾݅ ঌ۰ષ о஖੹׳ - ઑ੘੉ উغӝ ٸޙী Ӓ ੗୓۽ о஖ܳ ੹׳ೡ ࣻ ੓ѱ ؽ. ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ ࠶۾୓ੋ੉ о੢ ݆੉ ഝਊػ Ҕ : ঐഐചತ 1ࣁ؀ ঐഐചತ - ࠺౟௏ੋ - Ә੹੸ੋ о஖݅ ੹׳. 2ࣁ؀ ঐഐചತ - ੉؊ܻ਑ - о஖о ੓ח ؘ੉ఠө૑ ঐഐചತী ֍যࢲ ੹׳
28. ੉؊ܻ਑ ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ => 2ࣁ؀ ঐഐചತ੉੗ زदী ࠶۾୓ੋ ೒ۖಬ ࠺౟௏ੋ vs. ചತӝמ ੉؊ܻ਑ ചತӝמ झ݃౟ ஶ౟ۑ౟ ੘ࢿ DAPP ѐߊ => ੉ ݽٚ Ѫਸ ѐߊ ߂ ߓನೡ ࣻ ੓ח ೒ۖಬ DAPP(Decentralized Application) : ௿ۄ੉঱౟(iOS, Android)ী ࢲߡо ೤୛ઉ ز੘ೞח Appҗ ׳ܻ, ੉؊ܻ਑ ೒ۖಬਸ ੉ਊೞৈ ࠶۾୓ੋ ֎౟ਕ௼ ࢚ীࢲ ز੘ೞח App.
29. ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ ࠺౟௏ੋ vs. ചತӝמ ੉؊ܻ਑ ചತӝמ झ݃౟ ஶ౟ۑ౟ ੘ࢿ DAPP ѐߊ => ੉ ݽٚ Ѫਸ ѐߊ ߂ ߓನೡ ࣻ ੓ח ೒ۖಬ DAPP(Decentralized Application) : ௿ۄ੉঱౟(iOS, Android)ী ࢲߡо ೤୛ઉ ز੘ೞח Appҗ ׳ܻ, ੉؊ܻ਑ ೒ۖಬਸ ੉ਊೞৈ ࠶۾୓ੋ ֎౟ਕ௼ ࢚ীࢲ ز੘ೞח App. झ౱੒(Steemit) : STEEM ࠶۾୓ੋী ӝ߈ೞৈ ਍৔غח ࠶۾୓ੋ ӝ߈ SNS दझమ https://steemit.com
30. झ݃౟ ஶ౟ۑ౟ۆ? ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ ੿੄ - ઺ѐ੗ হ੉ P2P۽ औҊ ಞܻೞѱ ҅ডਸ ୓ѾೞҊ ࣻ੿ೡ ࣻ ੓ח ӝࣿ - ੌઙ੄ ੹੗ ҅ডࢲ ౠ૚ - ܻࣛ٣౭(Solidity)ۄח ঱যܳ ࢎਊೞৈ ੘ࢿೡ ࣻ ੓׮. - ੘ࢿػ झ݃౟ ஶ౟ۑ౟ח EVM (੉؊ܻ਑ о࢚ݠन)ਸ ా೧ EVM ௏٘۽ ߸ജೞৈ ࠶۾ী ੷੢ػ׮. - झ݃౟ ஶ౟ۑ౟ܳ प೯दఃݶ, झ݃౟ ஶ౟ۑ౟ܳ ನೣೞҊ ੓ח ࠶۾ਸ о૓ ଻ҷ੗о प೯઱୭੗۽ ࠗఠ 
 ࣻࣻܐܳ ߉ই TXܳ ࢤࢿೞৈ ੷੢ ೧ળ׮. ࢎਊоמೠ ࠙ঠ - ࠗز࢑ Ѣې, ਷೯ Ѣې, ࠁ೷ ഥࢎ, ై಴ दझమ ١ ੿೧૓ ডࣘ(҅ডࢲ)ਸ ా೧ ࢤࢿػ ؘ੉ఠо ੷੢غঠ ೞח Ҕী ࢎਊ ؼ ࣻ ੓׮.
31. झ݃౟ ஶ౟ۑ౟ दաܻয় ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ झ݃౟ ஶ౟ۑ౟ ௏٬ ҳഅೠ झ݃౟ ஶ౟ۑ౟ܳ ஹ౵ੌ झ݃౟ ஶ౟ۑ౟ ߓನೞৈ ࠶۾ী ୶о ߓನػ झ݃౟ ஶ౟ۑ౟ܳ ੉ਊೞৈ TX(౟ے੥࣌)ܳ ࢤࢿ ߂ ੷੢
32. ܻࣛ٣౭(Solidity) ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ ౠ૚ 1. ੉؊ܻ਑ ӝ߈੄ झ݃౟ ஶ౟ۑ౟ܳ ੘ࢿೡ ࣻ ੓ח ё୓૑ೱഋ ೐۽Ӓې߁ ঱য 2. C++, Python, JSী ৔ೱਸ ݆੉ ߉ওਵݴ, ܻࣛ٣౭۽ ૞ৈ૓ झ݃౟ ஶ౟ۑ౟ח ੉؊ܻ਑ о࢚ݠनੋ EVMীࢲ प೯ؽ. 3. http://remix.ethereum.org => ܻࣛ٣౭ܳ प೯ ߂ పझ౟ ೧ࠅ ࣻ ੓ח IDE ઺ ೞա. 4. ౚ݂৮੹ ঱য. - ߈ࠂޙҗ ઁযޙਸ ࢎਊೡ ࣻ ੓׮. (औѱ ݈ೞݶ) 5. ౠࣻೠ ߸ࣻ੄ ઓ੤. - msg.sender : ݫद૑ܳ ࠁյ ઱ࣗ - msg.value : ݫद૑۽ ࠁյ ч
33. ܻࣛ٣౭ + झ݃౟ ஶ౟ۑ౟ ৘द ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼
34. ܻࣛ٣౭ + झ݃౟ ஶ౟ۑ౟ ৘द ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ റࠁ੗ী ؀ೠ ё୓ Struct
 1. ੉ܴ(name)җ ٙ಴ ࣻ(upVote)ী ؀ೞৈ ߸ࣻܳ ࢸ੿
35. ܻࣛ٣౭ + झ݃౟ ஶ౟ۑ౟ ৘द ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ ై಴ী ೙ਃೠ ߸ࣻ ࢤࢿ 
 1. liveח ై಴੢੉ ৌ۰੓ח૑ ഛੋೞӝ ਤೠ boolഋ ߸ࣻ 2. candidatorListח റࠁ੗ܻझ౟ܳ ߓৌ۽ ੷੢ೞӝ ਤ೧ ࢤࢿೠ ҳઑ୓ ߓৌ ߸ࣻ 3. ownerח adminী ؀ೞৈ ӝ۾ೞӝ ਤ೧ ࢤࢿೠ addressഋ ߸ࣻ 
 4. Votedח key, valueܳ <address, bool>۽ ೞח map ߸ࣻ
36. ܻࣛ٣౭ + झ݃౟ ஶ౟ۑ౟ ৘द ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ Ownerܳ ୓௼ೞח ೣࣻ
 1. require(msg.sender == owner) => msg.senderח TXਸ ࢤࢿೠ ࢎۈ੄ ઱ࣗчਸ ঌ۰઱ח ౠࣻ ఃਕ٘੉׮. => requireח python੄ assert৬ ࠺तೠ ӝמਸ ೞח ఃਕ٘۽ require ઑѤਸ 
 ݅઒೧ঠ݅ ׮਺ ௏٘۽ ֈযр׮. 2. underscore(_) ఃਕ٘ח ݽٚ ೣࣻܳ प೯ೡ ࣻ ੓׮ח ೠ੿੗
37. ܻࣛ٣౭ + झ݃౟ ஶ౟ۑ౟ ৘द ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ ࢤࢿ੗
 1. ownerী msg.sender(TX ࢤࢿ ਬ੷) ઱ࣗчਸ ֍ח׮. => ೞ૑݅ খী ݈೮؍ onlyOwner ೠ੿੗ীࢲ requireܳ ాҗೞ૑ ޅೞӝ ٸޙী Ŧſ
 
 2. liveী trueܳ ઱য, ై಴੢੉ ৌ۷਺ਸ ੄޷ೠ׮.
38. ܻࣛ٣౭ + झ݃౟ ஶ౟ۑ౟ ৘द ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ റࠁ੗ ١۾ೞח ೣࣻ
 1. Public onlyOwner ܳ ࠊࢲ ঌ ࣻ ੓٠੉, admin݅੉ ੉ ೣࣻܳ ഐ୹ೡ ࣻ ੓׮. 2. Require ઑѤਸ ࠁݶ live==true੉Ҋ, റࠁ੗о 5ݺ ੉ೞੌ ٸ݅ റࠁ੗ ١۾ਸ оמೞѱ ೞ৓׮. => ੉ਬח ա઺ী ঌ ࣻ ੓ѷ૑݅, झ݃౟ ஶ౟ۑ౟ܳ प೯ೞӝ ਤ೧ࢶ ࣻࣻܐо ೙ਃೠؘ,
 Ӓ ন੉ ޖೠೞ૑ ঋӝ ٸޙ੉׮. 3. Require ઑѤਸ ݽف ాҗ೮׮ݶ, റࠁ੗ܳ ܻझ౟ী push ೠ׮.
39. ܻࣛ٣౭ + झ݃౟ ஶ౟ۑ౟ ৘द ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ ై಴ܳ ೞח ೣࣻ
 1. require ઑѤ ഛੋೠ׮. 2. ઑѤਸ ݅઒ೞݶ ೧׼ റࠁ੗੄ ٙ಴ࣻ(upVote)ܳ ૐоदெ઱Ҋ, 3. Voted[msg.sender] = trueܳ ೞৈ ై಴੗ ୓௼ܳ ೠ׮.
40. ܻࣛ٣౭ + झ݃౟ ஶ౟ۑ౟ ৘द ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ ై಴ܳ ઙܐೞח ೣࣻ
 1. ੉ ೣࣻب ݃ଲо૑۽ য়૒ admin݅੉ ੽Ӕೡ ࣻ ੓׮. 2. require ઑѤ ഛੋೠ׮. 3. live=false; ܳ ੉ਊೞৈ ై಴੢੉ ݃хغ঻਺ਸ ੄޷ೠ׮.
41. оझ (GAS) ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ ੿੄ - ݈ Ӓ؀۽ োܐܳ ੄޷ೞݴ, EVM ࢚ীࢲ ౟ے੥࣌ਸ ز੘दఃӝ ਤ೧ ࣗݽغח ࠺ਊ => औѱ ݈ೞݶ, झ݃౟ ஶ౟ۑ౟੄ ௏٘ী ؀೧ ೠ ઴ঀ प೯दఆ ٸ GASо ࣗݽػ׮. - ࠺౟௏ੋ੄ ࣻࣻܐ ѐ֛ীࢲ ખ ؊ ૓ചػ ѐ֛ਵ۽ ௏٘੄ ࠂ੟ࢿী ٮۄ ׮ܰѱ ஏ੿ػ׮. ױਤ - оझ(GAS)੄ ױਤ : gwei ( = 0.000000001 eth) => ੉؊ܻ਑੄ दࣁী ٮۄ ਬز੸.
42. оझ (GAS) ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ оझ ҅࢑ী ೙ਃೠ ѐ֛ 3о૑ 1. Gas Price 2. Gas Limit 3. Block Gas Limit ଻ҷ੗(Miner)੄ ౟ے੥࣌ ୊ܻ җ੿ 1. ଻ҷ੗ٜ੉ ࠶۾ী ׸ਸ TXٜਸ TX Poolীࢲ оઉ১ 2. TXٜਸ п ઱ࣗ ߹ Nonce1)৬ GasPrice۽ ࣽࢲܳ ੿ೣ 3. ଻ҷ੗ٜ੉ TXী ࢸ੿ػ ч(Gas Limit * Gas Price) ݅ఀ੄ оझܳ TX ࢤࢿ੗(msg.sender)۽ࠗఠ оઉ১. 4. TXਸ प೯ೞݴ ݺ۸যী ٮۄ оझܳ ࣗݽ => (Gas Limitࠁ׮ թਵݶ թ਷ ݅ఀਸ ߊन੗ীѱ ج۰ષ) * 1) TX੄ Nonce : TX੄ ࣽࢲۄҊ ࢤпೞݶ ؽ => э਷ Nonceੋ TXо ৈ۞ߣ ٜযৡ׮ݶ о੢ ֫਷ Gasܳ ૑ࠛೠ Ѫਸ ١۾
43. ࠶۾୓ੋ(including ethreum) ੄ ױ੼ ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ - ೐ۄ੉ߡद - ಣࢤ ӝ۾੉ թח׮. ҕѐ੸. - ౟ے੥࣌ ௏झ౟ - ੉؊ܻ਑੄ ౟ے੥࣌ਸ प೯दఆ ٸ GASۄח Ѫਸ ૑ࠛ೧ঠ ೞחؘ, ੉ח ࢎਊ੗о ૑ࠛ೧ঠೣ - ੉؊ܻ਑੄ оѺ੉ উ੿੸੉૑݅, ݒߣ ߸ೞח оझ࠺৬ ੉؊ܻ਑੄ оѺ੉ ֫ই૑ݶ ؊ ૐоೞח ࣻࣻܐח ࠗ׸੉ ػ׮. - ౟ے੥࣌ झೖ٘ - ઺ঔചػ ୊ܻী ࠺೧ ࢚׼൤ וܽࣘب۽ Ѣېо ػ׮. - ࠺੗஠٘ח 1ୡী 2000ѐ੿ب ୊ܻ оמ, ੉؊ܻ਑਷ 1ୡী 20ѐ - ઺ঔചػ ୊ܻח ૊द ബ۱ ߊൃ, ࠶۾୓ੋ਷ 10ߣ੄ ো࢑ਸ Ѣ୛ঠ ೣ (ড 3࠙) - ࠶۾ ࢎ੉ૉ - ݽٚ ଻ҷ੗о ݽٚ ࠶۾ਸ оઉঠೣ. ਊ۝ ର૑о ఀ. - ݒ׳ ড 2GBо ୶оؽ.
44. ࣁ઴ ಣ. ࠶۾୓ੋ | ࠶۾ | POW | ࠶۾୓ੋ ഝਊ | ੉؊ܻ਑ | झ݃౟ ஶ౟ۑ౟ | ܻࣛ٣౭ | оझ | ױ੼ ਤ߸ઑী ڪযա׮Ҋ ೧ࢲ ݽٚ दझమী ࠶۾୓ੋਸ ࢎਊೞח Ѫ੉ ੿׹੉ ইפ׮. ઺ঔച ػ दझమী ঌݏח ࢲ࠺झо ੓Ҋ, ࠶۾୓ੋী ঌݏח ࢲ࠺झо ੓׮. Ҷ੉ ੿࢚੸ੋ ࢲ࠺झܳ ޖܻೞѱ ߄Ե ೙ਃо হ׮. - MJ Koo -