Smart Contracts 101

Transcript

1. SMART CONTRACTS
 101
2. A SET OF PROMISES, SPECIFIED IN DIGITAL FORM, INCLUDING PROTOCOLS WITHIN WHICH THE PARTIES PERFORM ON THE OTHER PROMISES.
3. MERCI
4. LE PETIT BLOC BUILD A DECENTRALISED, TRUSTABLE AND RELIABLE WORLD ! SCIC PROJECT - HTTPS://LEPETITBLOC.NET!
5. FACTS
6. NICK SZABO 1993 - BITGOLD
7. MISE EN OEUVRE 2002 - ASKEMOS - SCHEME
8. ETHEREUM 2015 - VITALIK BUTERIN
9. SC !== ACCORD CONTRACTUEL
10. SC !== CONTRAT RICARDIENS
11. SC !== ETHEREUM RSK, BIP65 MULTISIG, NEO, STRATIS, LSK, ARK, EOS, WAVES, CHAINLINK…
12. UN SC C’EST BÊTE.
 ET MÉCHANT
13. ORACLE
14. UN SC A UN COUT EXEMPLE : LE GAS ETHEREUM
15. COMMENT ÇA MARCHE ? C’EST PAS SORCIER
16. 1- HIGH LEVEL LANGUAGES
17. 2- LOW-LEVEL BYTECODE ETHEREUM VIRTUAL MACHINE
18. COMMON STACK OPERATIONS POP //Pop item off the stack PUSH //Push item on the stack MLOAD //Load item into memory MSTORE //Store item in memory JUMP //Alter the location of program counter (PC) PC //Program counter MSIZE //Active memory size GAS //Amount of available gas for transaction DUP //Stack item duplication SWAP //Stack item exchange operation COMMON SYSTEM OPERATIONS CREATE //Create a new account CALL //Instruction for message passing between accounts RETURN //Execution halt REVERT //Execution halt, reverting state changes SELFDESTRUCT //Execution halt, and flag account for deletion ARITHMETIC OPERATIONS ADD //Add MUL //Multiplication SUB //Subtraction DIV //Integer division SDIV //Signed integer division MOD //Modulo (Remainder) operation SMOD //Signed modulo operation ADDMOD //Modulo addition MULMOD //Modulo multiplication EXP //Exponent operation STOP //Halt operation ENVIRONMENTAL OPCODES ADDRESS //Address of current execution account BALANCE //Account balance CALLVALUE //Transaction value for execution environment ORIGIN //Origin address of execution environment CALLER //Address of execution caller CODESIZE //Execution environment code size GASPRICE //Gas price state EXTCODESIZE //An account's code size RETURNDATACOPY //Copy of data output from previous memory call https://github.com/djrtwo/evm-opcode-gas-costs/blob/master/opcode-gas- costs_EIP-150_revision-1e18248_2017-04-12.csv
19. 3- DEPLOY AND CRY.
20. 4- SELFDESTRUCT INSERT A COIN.
21. CODE
22. COMPILER DIRECTIVE
23. DATA TYPES BOOL, INT, UINT, FIXED, UFIXED, ADDRESS, DYNAMIC, ENUM, STRUCT, MAPPING
24. MSG .SENDER, .VALUE, .GAS, .DATA, .SIG
25. TX .GASPRICE, .ORIGIN
26. BLOCK .BLOCKHASH, .COINBASE, .DIFFICULTY, .GASLIMIT, 
 .NUMBER, .TIMESTAMP
27. ADDRESS .BALANCE, .TRANSFER, .SEND, .CALL, .DELEGATECALL
28. BUILT-IN ADDMOD, MULMOD, KECCAK256, SHA256, SHA3, RIPEMD160
29. DEFINITION INTERFACE, LIBRARY
30. FUNCTIONS FUNCTION FUNCTIONNAME([PARAMETERS]) {PUBLIC| PRIVATE|INTERNAL|EXTERNAL} [PURE|CONSTANT|VIEW| PAYABLE] [MODIFIERS] [RETURNS (<RETURN TYPES>)]
31. CONSTRUCTOR CONSTRUCTOR, SELFDESTRUCT
32. MODIFIERS EXEMPLE : ONLYOWNER
33. INHERITANCE CONTRACT CHILD IS PARENT1, PARENT2 {}
34. ERROR HANDLING ASSERT, REQUIRE, REVERT
35. EVENTS LOG ENTRIES
36. BOITE A OUTILS (LA MIENNE)
39. LIVE
40. MERCI WE ❤ YOU