Script - Bitcoin Programming Discussion

Bitcoin Programming 101
#61

To get D with Stack Language on IDE
2 2 op_mul 3 3 op_mul op_add

#62

My answer is: 02 op_2mul 03 03 OP_mul OP_Add

#63

02 02 op_mul 03 03 OP_mul op_add

#64

The answer should be:

2 2 OP_MUL
3 3 OP_MUL
OP_ADD

Greetz Fabrice

#65

Hey Fabrice,
thx for the reply.
Why i canĀ“t be 2 OP_2Mul?? It does the same like 2 2 OP_MULā€¦

#66

I didnā€™t knew that, thanks

#67

Here is my script which gave me the 0xD answer:

2 2 OP_MUL
3 3 OP_MUL
op_add

#68

2 2 Op_Mul 3 3 Op_Mul Op-Add

#69

Welcome to this reading assignment on the Script programming language. If you havenā€™t already, read through the wiki page describing all the op-codes in script and answer the following questions. Post your answers in the forum thread .

  1. What is the practical difference between OP_OP_CHECKSIG and OP_OP_CHECKSIGVERIFY?
    OP_CHECKSIG The signature used by OP_CHECKSIG must be a valid signature for this hash and public key. If it is, 1 is returned, 0 otherwise. --> Output True or False

OP_CHECKSIGVERIFY
Same as OP_CHECKSIG, but OP_VERIFY is executed afterward. --> Output fail or nothing

  1. What is the ā€œPopā€ functions called in Script? (It is not called OP_POP)
    OP-fromalstack
  2. What is the hexadecimal OP Code for OP_CHECKMULTISIG?
    0Xae
#70

Answer: 2 2 OP_MUL 3 3 OP_MUL OP_ADD

#71

multiplyandadd
multiplyandadd1903Ɨ1028 137 KB

1 Like
#72

here is the answer

2 2 OP_MUL 3 3 OP_MUL OP_ADD

1 Like
#73

2 2 op_mul 3 3 op_mul op_add

2 Likes
#74

2 2 op_mul
3 3 op_mul
Op_add

1 Like
#75

In my opinion the script code is:
2 2 3 3 op_mul op_mul op_add

#76

Ok, I got the script sequence wrong. Meanwhile I understand why. The funny thing is that my sequence also added to 14. Anyway, great explanation. Thank you.

1 Like
#77

2 2 op_mul 3 3 op_mul op_add

1 Like
#78

2 2 op_mul 3 3 op_mul op_add

1 Like
#79

2 2 op_mul 3 3 op_mul op_add

2 Likes
#80

2 2 op_mul 3 3 op_mul op_add

2 Likes