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ETHEREUM: A SECURE DECENTRALISED GENERALISED TRANSACTION LEDGER BERLIN VERSION 38 0xf4 DELEGATECALL 6 1 Message-call into this account with an alternative account’s code, but persisting the current values for sender and value. Compared with CALL, DELEGATECALL takes one fewer arguments. The omitted argument is μs[2]. As a result, μs[3], μs[4], μs[5] and μs[6] in the definition of CALL should respectively be replaced with μs[2], μs[3], μs[4] and μs[5]. Otherwise it is equivalent to CALL except: 0xf5 CREATE2 4 0xfa STATICCALL 6 0xfd REVERT 2 0xfe INVALID ∅ 0xff SELFDESTRUCT 1 (σ, g, A, ()) otherwise Note the changes (in addition to that of the fourth parameter) to the second and ninth parameters to the call Θ. This means that the recipient is in fact the same account as at present, simply that the code is overwritten and the context is almost entirely identical. 1 Create a new account with associated code. Exactly equivalent to CREATE except: The salt ζ ≡ μs[3]. 1 Static message-call into an account. Exactly equivalent to CALL except: The argument μs[2] is replaced with 0. The deeper argument μs[3], μs[4], μs[5] and μs[6] are respectively replaced with μs[2], μs[3], μs[4] and μs[5]. The last argument of Θ is ⊥. 0 Halt execution reverting state changes but returning data and remaining gas. The effect of this operation is described in (138). For the gas calculation, we use the memory expansion function, μ′i ≡M(μi,μs[0],μs[1]) ∅ Designated invalid instruction. 0 Halt execution and register account for later deletion. Θ(σ,A∗,Is,Io,Ia,t,CCALLGAS(μ), (σ′,g′,A′,o) ≡ Ip,0,Iv,i,Ie + 1,Iw) if Ie<1024 A ′s ≡ A s ∪ { I a } A ′a ≡ A a ∪ { r } ∅ σ′[r] ≡ (σ[r]n, σ[r]b + σ[Ia]b, σ[r]s, σ[r]c) (σ[r]n, 0, σ[r]s, σ[r]c) where r = μs[0] mod 2160 σ′[Ia]b = 0 CSELFDESTRUCT (σ, μ) ≡ Gselfdestruct + Gnewaccount 0 if σ[r]=∅∧σ[Ia]b=0 if r ̸= Ia otherwise + if DEAD(σ, r) ∧ σ[Ia]b ̸= 0 otherwise 0 Gcoldaccountaccess if r∈Aa otherwise Appendix I. Genesis Block The genesis block is 15 items, and is specified thus: (326) 0256 , KECRLP(), 0160 , stateRoot, 0, 0, 02048 , 217 , 0, 0, 3141592, time, 0, 0256 , KEC(42), (), () Where 0256 refers to the parent hash, a 256-bit hash which is all zeroes; 0160 refers to the beneficiary address, a 160-bit hash which is all zeroes; 02048 refers to the log bloom, 2048-bit of all zeros; 217 refers to the difficulty; the transaction trie root, receipt trie root, gas used, block number and extradata are both 0, being equivalent to the empty byte array. The sequences of both ommers and transactions are empty and represented by (). KEC(42) refers to the Keccak hash of a byte array of length one whose first and only byte is of value 42, used for the nonce. KECRLP() value refers to the hash of the ommer list in RLP, both empty lists. The proof-of-concept series include a development premine, making the state root hash some value stateRoot. Also time will be set to the initial timestamp of the genesis block. The latest documentation should be consulted for those values.PDF Image | ETHEREUM: A SECURE DECENTRALISED GENERALISED TRANSACTION
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