OP_PUSHDATA1
OP_PUSHDATA2
OP_PUSHDATA4
OP_DUP
OP_DROP
OP_HASH160
OP_EQUALVERIFY
OP_CHECKSIG
(for the time being at least
) 
Topic: Non-standard transactions in the block chain (Read 1247 times)
That's fine. As long as they don't use more than:
OP_PUSHDATA1
OP_PUSHDATA2
OP_PUSHDATA4
OP_DUP
OP_DROP
OP_HASH160
OP_EQUALVERIFY
OP_CHECKSIG
(for the time being at least)
OP_PUSHDATA1
OP_PUSHDATA2
OP_PUSHDATA4
OP_DUP
OP_DROP
OP_HASH160
OP_EQUALVERIFY
OP_CHECKSIG
(for the time being at least
)
There are more on the testnet. Also depending on how you define "standard" there's a tx somewhere that has lots of zero value outputs that steganographically encodes the Bitcoin logo. It passes the IsStandard checks but is not financial in nature.
Hhahaha! That's why IsStandard exists 
Are those 3 the only non-standard transactions? They're very old it seems.
Thanks for that.
EDIT: How did that transaction not fail? OP_CHECKSIG pops twice from the stack and after the first pass, the stack would be 0 and then fail.
Are those 3 the only non-standard transactions? They're very old it seems.
Thanks for that.
EDIT: How did that transaction not fail? OP_CHECKSIG pops twice from the stack and after the first pass, the stack would be 0 and then fail.
See the "strange transactions" list on blockexplorer.com
Are we talking about a huge list here or just a select few?
If not, would someone link a random selection of them?
Anything that uses more than:
OP_PUSHDATA1
OP_PUSHDATA2
OP_PUSHDATA4
OP_DUP
OP_DROP
OP_HASH160
OP_EQUALVERIFY
OP_CHECKSIG
If not, would someone link a random selection of them?
Anything that uses more than:
OP_PUSHDATA1
OP_PUSHDATA2
OP_PUSHDATA4
OP_DUP
OP_DROP
OP_HASH160
OP_EQUALVERIFY
OP_CHECKSIG
There are. BitcoinJ only does SPV, though, so it doesn't need to verify everything.
Does bitcoinj verify any transactions?
http://code.google.com/p/bitcoinj/source/browse/trunk/src/com/google/bitcoin/core/Script.java
opCheckSig just returns true...
http://code.google.com/p/bitcoinj/source/browse/trunk/src/com/google/bitcoin/core/Script.java
opCheckSig just returns true...
Hi,
I noticed that BitcoinJ doesn't verify non standard transactions. Are there any non standard transactions in the current block chain?
When I say standard transactions, I mean only
[sig] [pubkey] OP_DUP OP_HASH160 OP_EQUALVERIFY OP_CHECKSIG
And,
[sig] [pubkey] OP_CHECKSIG
Thanks
I noticed that BitcoinJ doesn't verify non standard transactions. Are there any non standard transactions in the current block chain?
When I say standard transactions, I mean only
[sig] [pubkey] OP_DUP OP_HASH160
And,
[sig] [pubkey] OP_CHECKSIG
Thanks
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