This is a 5 input one output multisig transaction. The decoding of the first sigscript
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
can be decomposed into these sections:
00
sig1 47304402201C45383CC6E43202ED069E36184A97BF5DD489C6BEA1372629540DEA154C424902200A950B3557BBA9AE9531237D46E6EB1AFFFD01EBA989C3E53ADAAC443E5E2A2E01
sig2 473044022032A681FB77589CE1A29A84494A6F9CB19630FCD65480FF646F30D8B826980390022006DC71BABA1142ABB275BBF3613B2A13B347BAC4D09D41CCD9B69B02C270D8C201
length 4C69
OP_2 52
pk1 21 03745AAAF364030720B2D14DE50A3310EEF521C91E36353DCA20813713535C005A
pk2 21 02DB8911B3989B43C43D8DD6E50459BD85C38FAF3B2862EB78EF297002775A10BD
pk3 21 0351E3F71B7CF9A5F5F86C1908FEE02EBF5A1ED77B6748F7486505D155833645F2
OP_3 53
check AE
So this is a two of three multisig tx, which has provided two signatures, and three public keys. To explain each command, here are the details:
00: OP_0, OP_FALSE: an empty array is pushed onto the stack.
47: OP_DATA_0x47: push hex 47 (decimal 71) bytes on stack
30: OP_SEQUENCE_0x30: type tag indicating SEQUENCE, begin sigscript
44: OP_LENGTH_0x44: length of R + S
02: OP_INT_0x02: type tag INTEGER indicating length
20: OP_LENGTH_0x20: this is SIG R (32 Bytes)
1C45383CC6E43202:ED069E36184A97BF:5DD489C6BEA13726:29540DEA154C4249
02: OP_INT_0x02: type tag INTEGER indicating length
20: OP_LENGTH_0x20: this is SIG S (32 Bytes)
0A950B3557BBA9AE:9531237D46E6EB1A:FFFD01EBA989C3E5:3ADAAC443E5E2A2E
01: OP_SIGHASHALL: this terminates the ECDSA signature (ASN1-DER structure)
#########################################################
47: OP_DATA_0x47: push hex 47 (decimal 71) bytes on stack
30: OP_SEQUENCE_0x30: type tag indicating SEQUENCE, begin sigscript
44: OP_LENGTH_0x44: length of R + S
02: OP_INT_0x02: type tag INTEGER indicating length
20: OP_LENGTH_0x20: this is SIG R (32 Bytes)
32A681FB77589CE1:A29A84494A6F9CB1
9630FCD65480FF64:6F30D8B826980390
02: OP_INT_0x02: type tag INTEGER indicating length
20: OP_LENGTH_0x20: this is SIG S (32 Bytes)
06DC71BABA1142AB:B275BBF3613B2A13
B347BAC4D09D41CC:D9B69B02C270D8C2
01: OP_SIGHASHALL: this terminates the ECDSA signature (ASN1-DER structure)
#########################################################
4C: OP_PUSHDATA1: next byte is # of bytes that go onto stack
69: OP_Int(0x01-0xff): 105 bytes onto the stack
52: OP_2: the number 2 is pushed onto stack
################### we go multisig ####################################
21: OP_DATA_0x21: compressed pub key (33 Bytes)
03745AAAF3640307:20B2D14DE50A3310:EEF521C91E36353D:CA20813713535C00:5A
This is MultiSig's compressed Public Key (X9.63 form)
corresponding bitcoin address is: 1GNXpcYzasmmXvM4rNgkvZ5SzXgL4L9Ch6
21: OP_DATA_0x21: compressed pub key (33 Bytes)
02DB8911B3989B43:C43D8DD6E50459BD:85C38FAF3B2862EB:78EF297002775A10:BD
This is MultiSig's compressed Public Key (X9.63 form)
corresponding bitcoin address is: 1KHCXt29T7cHfPA88SpPL128h9PyZMi2uR
21: OP_DATA_0x21: compressed pub key (33 Bytes)
21: OP_DATA_0x21: compressed pub key (33 Bytes)
0351E3F71B7CF9A5:F5F86C1908FEE02E:BF5A1ED77B6748F7:486505D155833645:F2
This is MultiSig's compressed Public Key (X9.63 form)
corresponding bitcoin address is: 1PjUtVWKkr2GxA5HrkAmvhpyHGUwNPyQzH
53: OP_3: the number 3 is pushed onto stack
################### 2-of-3 Multisig ###################################
AE: OP_CHECKMULTISIG: terminating multisig
corresponding bitcoin address is: 33jhmQXe4Q9dP24Jm9EVa6XHxn85sZnQMR
Now if all this looks like being to much for the beginning, I recommend reading Andreas' book "Mastering Bitcoin", here especially chapter 7 "Advanced Transactions and Scripting".