Transaction

class hodl.block.Transaction.Transaction

Class for transaction. To create new transaction, use: tnx=Transaction() tnx.gen(parameters)

classmethod from_json(s)

Decodes transacion from str using JSON

Parameters:s (str) – Transaction’s str representation got by str(tnx) Returns:transaction Return type:Transaction

is_valid(bch)

Returns validness of transaction. Checks: is sign valid are all money spent

Parameters:bch (Blockchain) – blockchain Returns:Transaction validness Return type:bool

spent(bch, exc=())

Checks if money from transaction are spent

Parameters:

• bch – Blockchain
• exc – txs to exclude

Returns:

Is transaction used by other transaction

update()

Update hash

hodl.block.Transaction.is_tnx_money_valid(self, bch)

Validate tnx

Parameters:

• self – Transaction
• bch – Blockchain

Returns:

validness(bool)

hodl.block.Transaction.rm_dubl_from_outs(outs, outns)

Remove dublicated addresses from tnx’s outs

Parameters:

• outs – list, tnx.outs
• outns – list, tnx.outns

Returns:

clean outs: list, clean outns: list

hodl.block.Transaction.sign_tnx(self, sign, privkey, t)

Sign tnx with privkey or use existing sign

Parameters:

• self – tnx
• sign – existing sign or ‘signing’
• privkey – private key or nothing
• t – existing timestamp if privkey is ‘signing’ or something else

Returns:

sign (str)