10 - value

The value of the input (value) is an 8 byte little endian integer representing the satoshi value of the UTXO being signed.

This can be useful when enforcing process states that require either static or dynamic satoshi values to be used or otherwise checked in each iteration of the transaction.

Example: Value of input check

Checking the value can be a useful gating process to decide whether or not to end a process. In this example, the input value is checked, and if found to be less than 16 satoshis, an alternative condition is created.

Stack	Script	Description
<r_tx_preimg>	...	Version, hash_prevouts, hash_nSequence, hash_outpoints and the script have been removed
<r_tx_preimg>	OP_8	length is 8 bytes long
<r_tx_preimg> 0x08	OP_SPLIT	Split value
<8byte_value> <rr_tx_preimg>	OP_SWAP	Move to top of stack
<rr_tx_preimg> <8byte_value>	OP_BIN2NUM	Optimally encode the integer value
<rr_tx_preimg> <value>	OP_16	16 satoshis is our limit
<rr_tx_preimg> <value> 16	OP_GREATERTHANOREQUAL	numeric check
<rr_tx_preimg> <result>	OP_IF	if greater than
<rr_tx_preimg>	...	process
<rr_tx_preimg>	OP_ELSE	if less than
<rr_tx_preimg>	...	alternative process
<data_items>	OP_ENDIF	Resulting outcome