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// https://developer.algorand.org/docs/get-details/dapps/avm/teal/#looping-and-subroutines
// Are used to comment in TEAL
// htlc.teal
// Push the CloseRemainderTo property of the current transaction onto the stack
txn CloseRemainderTo
// Push addr2 onto the stack as the intended recipient
addr SOEI4UA72A7ZL5P25GNISSVWW724YABSGZ7GHW5ERV4QKK2XSXLXGXPG5Y
// The == operator is used to verify that both of these are the same
// This pops the two values off the stack and pushes the result 0 or 1
==
// Push the current transaction’s Receiver property onto the stack
// In this example it should be addr2
txn Receiver
// Push addr2 on the stack using the addr constant
addr SOEI4UA72A7ZL5P25GNISSVWW724YABSGZ7GHW5ERV4QKK2XSXLXGXPG5Y
// Use the == to verify that these are equal which pops off the top two values of the stack
// and returns 0 or 1
==
// The stack should currently have two values from the two top conditions
// These will be either 0s or 1s
// Push the && operator which will AND the two previous conditions and return
// either 0 or 1, which leaves one value on the stack either a 0 or a 1
&&
// Push the first argument to the transaction onto the stack
arg 0
// The len operator pops the arg off the stack and
// pushes the length of the argument onto the stack
len
// Push a constant int of value 46 onto the stack
int 46
// The == operator verifies that the length of the argument
// is equal to 46. This pops the two values and returns a 0 or 1
// The stack now contains two values with a value of 0 or 1
==
// The && operator will AND the two values in the stack
// which pops both values off the stack and returns a 0 or 1
// The stack should now only have one value on the stack, 0 or 1
&&
// arg 0 is pushed back onto the stack
// This represents the hashed passcode
arg 0
// The sha256 operator pops the arg 0 off the stack
// and pushes the hash value of the argument onto the stack
sha256
// The constant byte array of the base64 version of our secret is pushed onto the stack
byte base64 QzYhq9JlYbn2QdOMrhyxVlNtNjeyvyJc/I8d8VAGfGc=
// The == operator pops the two values and pushes 0 or 1 onto the stack
// If arg0 is equal to the secret this value will be 1 and if not it will be 0
==
// Two values are now on the stack. The && operator is used
// to pop the last two values and push either 0 or 1
// This will AND all previous conditions to this one.
// The stack should only have a 0 or 1 value now
&&
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