Use Case: Crowdfunding Agent
----------------------------
If a target balance is achieved by a hard-coded time then the entire balance will be sent to an account which
is also hard-coded into the AT. If not then the txs that were sent to it will be iterated and refunded to one
by one.
Note that there are exactly 9 steps required to be executed "per refund" so in order for this AT to correctly
refund every tx a fee that allows for those steps would either need to be charged for sending funds to the AT
or otherwise the amount needed to cover those steps would need to be deducted from the refund.
Variables
---------
@00 ==> @timestamp
@01 ==> @decision_time
@02 ==> @txid
@03 ==> (unused)
@04 ==> @tx_info
@05 ==> @target_amt
@06 ==> @target_acc
@07 ==> @balance
@08 ==> @tx_source
@09 ==> @refund_time
Functions
---------
20 (0x14) = get a time stamp value for the last block in the blockchain
21 (0x15) = get txid for the first tx after the provided time stamp
22 (0x16) = get a time stamp value for a given txid
24 (0x18) = get source account/address for a given txid
25 (0x19) = get balance of own account
27 (0x1b) = get funds amount for a given txid
31 (0x1f) = pay given funds amount to a given account/address
Sample Function Data
--------------------
function 020 0x0000000000012345 true
function +021 0x0000000000000064,0x0000000000000065,0x0000000000000066,0x0000000000000000 false
function 022 0x00000000000a5da8,0x00000000000a5db8,0x00000000000a5dc8,0x0000000000000000 false
function 023 0x000000000000ff00,0x000000000000ee00,0x000000000000ffff,0x0000000000000000 false
function 025 0 true
function 024 0x1111000000000000,0x2222000000000000,0x3333000000000000,0x0000000000000000 false
function 027 0x0000000000000100,0x0000000000000100,0x0000000000000100,0x0000000000000000 false
Sample Run Output
-----------------
func: 20 rc: 0000000000012345
func1: 21 with 74565 rc: 0000000000000064
func1: 22 with 100 rc: 00000000000a5da8
func1: 21 with 679336 rc: 0000000000000065
func1: 22 with 101 rc: 00000000000a5db8
func1: 21 with 679352 rc: 0000000000000066
func1: 22 with 102 rc: 00000000000a5dc8
(resetting function data)
func: 25 rc: 0000000000000051
func1: 21 with 74565 rc: 0000000000000064
func1: 22 with 100 rc: 00000000000a5da8
func1: 28 with 100 rc: 0000000000000000
func1: 24 with 100 rc: 1111000000000000
func1: 27 with 100 rc: 0000000000000100
payout 70 to account: 1111000000000000
(stopped - zero balance)
Script Assembly
---------------
if @timestamp not zero goto loop 1e0000000034
get last block timestamp and put in @timestamp 35140000000000
copy @timestamp to @refund_time 020900000000000000
set @decision_time 0101000000c55d0a0000000000
set @target_amt (to 100) 01050000006400000000000000
set @target_acc 01060000001111111100000000
:loop (0000003d)
get tx at after @timestamp and store in @txid 3615000200000000000000
get timestamp for @txid and store in @timestamp 3616000000000002000000
if @timestamp > @decision_time goto decision 1f000000000100000014
if @txid is zero finish 2602000000
goto loop 1a3d000000
:decision (00000067)
get balance and store in @balance 35190007000000
restore @timestamp from @refund_time 020000000009000000
if @target_amt > @balance goto refund 1f050000000700000013
:funded
set pcs 30
pay balance to @target_account 331a0006000000
finish 28
:refund (0000008a)
set pcs 30
:refund loop
get tx at after @timestamp and store in @txid 3615000200000000000000
get timestamp for @txid and store in @timestamp 3616000000000002000000
if @txid is zero finish 2602000000
get tx type for @txid and store in @tx_info 361c000400000002000000
if @tx_info is non-zero goto skip 1e0400000027
get account for @txid and put in @tx_source 3618000800000002000000
get amount for @txid and store in @tx_info 361b000400000002000000
send @tx_info to @tx_source 341f000400000008000000
:skip
goto refund loop 1a8a000000
Assembly Code
-------------
00000000* BNZ $00000000 :0000003d
00000006 FUN @00000000 20
0000000d SET @00000009 $00000000
00000016 SET @00000001 #0000001100000000
00000023 SET @00000005 #00000002dd231b00
00000030 SET @00000006 #15aefb06dcb7450e
0000003d FUN @00000002 21 $00000000
00000048 FUN @00000000 22 $00000002
00000053 BGT $00000000 $00000001 :00000067
0000005d FIZ @00000002
00000062 JMP :0000003d
00000067 FUN @00000007 25
0000006e SET @00000000 $00000009
00000077 BGT $00000005 $00000007 :0000008a
00000081 PCS
00000082 FUN 26 $00000006
00000089 FIN
0000008a PCS
0000008b FUN @00000002 21 $00000000
00000096 FUN @00000000 22 $00000002
000000a1 FIZ @00000002
000000a6 FUN @00000004 28 $00000002
000000b1 BNZ $00000004 :000000d8
000000b7 FUN @00000008 24 $00000002
000000c2 FUN @00000004 27 $00000002
000000cd FUN 31 $00000004 $00000008
000000d8 JMP :0000008a
Machine Code
------------
1e000000003d351400000000000209000000000000000101000000c55d0a00000000000105000000640000000000000001060000
001111111100000000361500020000000000000036160000000000020000001f00000000010000001426020000001a3d00000035
1900070000000200000000090000001f05000000070000001330331a000600000028303615000200000000000000361600000000
00020000002602000000361c0004000000020000001e04000000273618000800000002000000361b000400000002000000341f00
04000000080000001a8a000000
