Questions tagged [script]
This tag should be used for questions regarding Bitcoin transaction scripts or scripting languages used in transactions of altcoins such as Solidity. Scripts are a set of instructions on how to complete a transaction.
388
questions
0
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0answers
20 views
Bitcoin Transaction Generation: Signature Verification Error
I have the following raw transaction (basic P2PKH) which I am trying to send to the Bitcoin Testnet 3:
...
3
votes
1answer
188 views
Is it possible to do a 3-of-5 OR 1 multi-sig for backup purposes?
I'd like to create a multi-sig wallet where I can freely create transactions, but I want to give keys to trusted friends/family + a safety deposit box so that if I hit my head and forget my password, ...
0
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1answer
44 views
Bitcoin TX decode failed while sending to a the network(regtest)
I have created a signature manually (referring the signature output formats in bitcoin-cli). But i tried to send the same to the network I am getting
error code: -22
error message:
TX decode ...
0
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1answer
30 views
Bitcoin script (pay-to-pubkey-hash)
Example for 'pay-to-pubkey-hash' is quoted in Wiki bitcoin script.
I have a doubt that 14 is for bytes to push. But the data to push is 20 bytes.
Please anyone could explain to me?
Script:
76 --> ...
0
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1answer
40 views
In practice, are redeemScripts commonly reused?
In regards to P2SH-P2WSH transactions, are Txout-script values identical between transactions? Is it reasonable to expect a business or vendor that accepts bitcoin to be using the same redeemScript ...
0
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1answer
40 views
How do I extract the address from a scriptPubKey?
I am creating a block parser and just learned about Scripts in Bitcoin yesterday which is kind of confusing so far. I want to extract the addresses involved in each transaction. Right now, I am able ...
0
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0answers
48 views
HTLC in blockchain regtest mode by creating transactions manually
I am trying to create a htlc smart contract manually by writing a script and finding the hex using the btcc compiler. Now node A has to create a transaction using that hex and lock money in that p2sh ...
0
votes
1answer
59 views
Bitcoin raw transaction with manually created redeem script
I am running bitcoin in regtest mode with 2 nodes bitcoinNode1 and bitcoinNode2.I have created a redeem script by writing the opcodes and converted into hex form using btcc.
HP-ProBook-440-G4:~$ btcc ...
0
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1answer
31 views
OP_EQUAL not working properly
I went to https://siminchen.github.io/bitcoinIDE/build/editor.html to try some bitcoin scripting and I wrote this script:
<1PUzZ61FSVTn12CafJC85Vy1ts3BoFcXdU> OP_HASH160 <...
0
votes
1answer
20 views
Getting source address of a Tx message from it's signature script
I have a simple bitcoin packet which contains TX message.
in a TX message, one of it's Transaction input hex data was like this:
...
0
votes
1answer
59 views
Detect types of ScriptSig and parse each part
As explained in
https://en.bitcoin.it/wiki/Script
there are many types of scriptPubKey and scriptSig like:
<sig> <pubKey>
<sig> <pubKey> <pubKey>
<sig> <...
1
vote
0answers
37 views
Parse signature and public key from scriptsig in an input transaction of bitcoin protocol [duplicate]
I'm interested in bitcoin protocol and checking validation of a transaction.
in a TX message, we can see one or more than one input transaction and every input transaction has a previous transaction ...
0
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0answers
26 views
Extract input addresses from a tx message in bitcoin protocol
Recently, I wrote a c++ code to extract some information from some messages in BITCOIN protocol. for example, I extracted bitcoin value and output address corresponded to it from tx messages of this ...
3
votes
1answer
105 views
Bitcoin script execution unsuccessful
I'm working my way through "Mastering Bitcoin".
The author made a transaction:
0627052b6f28912f2703066a912ea577f2ce4da4caa5a5fbd8a57286c345c2f2
https://www.blockchain.com/btc/tx/...
0
votes
2answers
25 views
Where are the non-scriptPubKey outputs in the chainstate leveldb?
I read
https://bitcoindev.network/understanding-the-data/
and it explain that the leveldb of the chainstate contain transaction with at least one unspent output.
And it has "The scriptPubKey and ...
1
vote
1answer
52 views
How to generate an output address from output scrips which start with 0x00?
A few days ago, I got a BITCOIN traffic which contains some tx message.
some of tx messages contain witness data.
I want to produce all output addresses from transaction output scripts.
I extracted ...
1
vote
1answer
41 views
Bitcoin Blocks Date not coherent? [duplicate]
I was taking data from the BTC Blockchain with a custom script.
I found something really weird.
Block nr. 24668 was created at 2009-10-09 23:02:57
Block nr. 24669 was created at 2009-10-10 00:15:48
...
2
votes
1answer
124 views
How i can extract all bitcoin output addresses from tx message?
I want to extract output addresses from tx messages in any bitcoin pcap.
currently, i extract tx messages which it's output script starts with "0x76" or "0xA9", but i don't know how can i extract the ...
1
vote
2answers
58 views
How to extract raw script from tx messages when the output script starts with 0xA9?
I'm working on extracting output addresses from tx messages in BITCOIN packets.
Currently, I extract address from output scripts which starts with 0x76(OP_DUP)
like this :
76 a9 14 6d 1d 74 58 95 6e ...
1
vote
1answer
46 views
Multisig without P2WSH in Lightning
The current Lightning implementations use P2WSH script format for multisig in the funding transaction. But it is also possible to use the CHECKMULTISIG opcode "natively", i.e., without P2WSH (see ...
0
votes
1answer
48 views
Are Relay Addresses Possible?
Is it possible to create an address such that different parties can spend certain portions of any output spent to that address?
R: 1zaybxcrandrelayexampaddr
A: 1xyzabcrandexampladdressa 97%
B: ...
2
votes
1answer
70 views
How to make a homomorphic preimage/payment hash with current lightning network / Bitcoin implementations?
If I remember / understand it correctly by using the mechanisms from the scriptless scripts paper we could easily create homomorphic preimages / paymenthashes.
I think this would be a very desirable ...
1
vote
1answer
96 views
Besides transaction validation, are there any other uses of the Script language in Bitcoin
Script's stack operations are used to validate signatures and scripts of transaction inputs and outputs. Is Script also used to validate block, network, or any other data?
Seem like there are a lot ...
3
votes
1answer
51 views
Differences to CCompactSize and CVarInt
I'm developing a parser bitcoin core and I have a problem whit the type CVarInt, I using the decodifier mode of the CCompact size but at the block 976 I Have a problem whit the type, because the value ...
1
vote
1answer
54 views
Script Null into raw trasaction bitcoin core
I'm developing a parser for bitcoin core and into the alpha test of the parser,I noticed than the script bitcoin core are null and the hash raw transaction exist.
An example: for this transaction the ...
0
votes
1answer
67 views
Script to import multiple priv keys in Electrum
DuckDuckGo turns up nothing of interest. How to import multiple priv keys in Electrum from a file using Electrum console or shell script, for all derivable valid BTC addresses? (1,3,bc1)
Eventually I ...
1
vote
0answers
39 views
Error mandatory-script-verify-flag-failed (Signature is found in scriptCode)
I found a few questions with the specific error, but couldn't find also the appropriate answer. So, here I am.
I am working on regtest in a Python library that create transactions and then use JSON-...
2
votes
2answers
74 views
Script Bitcoin represent number > 16
I'm studying Script language, but I don't understand How can I rappresent the number > 16, for instance 210
I want to do a simple sum
OP_10 210 OP_ADD
how I have to represent 210?
I'm trying with ...
1
vote
1answer
45 views
How to convert P2PKH to Hash160 (or something else acceptable by Script)?
How to convert a bitcoin address (starts with 1) to the right format acceptable by script (I'm using this Ruby library)? I'm doing this:
tx.output do |o|
o.value(50000)
o.script { |s| s.recipient(...
2
votes
1answer
234 views
Bitcoin scripts that force disclosure of the private key
Context: I am creating an example code that would demonstrate an atomic swap between Elements and Bitcoin, with the aim that the swap transactions cannot be trivially linked, as it would be with ...
2
votes
0answers
19 views
Script and DER in P2PKH
Im trying to figure out the script and DER
In P2PKH, the "first part (scriptsig)" push in stack (<sig><pubK>) because is it DER?
Instead the "second part (scriptPubKey)" you can map the ...
1
vote
1answer
106 views
Why are only specific transaction types accepted into the mempool?
In the Bitcoin Mainnet, only specific transaction types are accepted:
Bitcoin uses a scripting language to specify (and satisfy) the encumbrances, thereby allowing a whole host of transaction types....
0
votes
1answer
27 views
What did Deepbit to make their inputs special on transactions?
It seems Deepbit uses a strange format for it’s transactions on the addresses it owned. For example, in this transaction all inputs but 3 comes from Deepbit. Even Bitcoin core can’t decode addresses ...
1
vote
0answers
146 views
Coinbase “convert” API?
I use the convert functions at coinbase to take advantage of market changes to increase my position amounts.
This weekend I am going to write a php script that tracks the available conversion pairs ...
0
votes
1answer
40 views
Which parts of a bitcoin script are embedded in the blockchain?
I assume the scriptPubKey is contained in a UTXO, and therefore embedded in the blockchain. Since, this is the script used to unlock the input.
Is a scriptSig also embedded in the blockchain? Or is ...
0
votes
2answers
71 views
Verifying a digital signature that a transaction is going to an output with value X inside a script
Edit; after writing this post i have found that OP_CHECKDATASIG is basically this in a nutshell. It is implemented on Bitcoin Cash and may soon be on Bitcoin Core as well.
Someone has even written ...
1
vote
1answer
84 views
In the bitcoin scripting language, how can I access other outputs of the transaction? Or how else can I limit how the coins may be spent?
Is there any way to add an opcode to a UTXO that prevents how the coins are spent?
For example, in order to to spend the output, a person must send X number of bitcoin to Y address within the ...
0
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0answers
50 views
How to assemble and test a script on Bitcoin testnet online?
Given a script using Multisig, how can I convert addresses to hash that can be used in the script then assemble the script and then launch it inside a transaction on Bitcoin testnet that can viewed on ...
1
vote
2answers
72 views
How to search for a transaction using a specifc OPCODE?
I have several OPCODES where I need real worlds examples…
However they are rarely used. So how to search and disassemble an existing mined transaction using it ?
0
votes
1answer
60 views
What’s the opcode sequence for doing the reverse of Multisig?
With a multisig wallet, several public keys are needed to spend an amount. But how to perform the reverse with time ?
I’m talking about this case where Alice performs a transaction where the output ...
2
votes
1answer
51 views
How to disassemble a bitcoin script?
There are many explorers which allows to dissamble a transaction back into opcodes.
But what about scripts which aren’t broadcasted yet like this redeem script :...
0
votes
1answer
27 views
Destination address(es) when redeeming an HTLC
Starting from this text at https://en.bitcoin.it/wiki/Script:
"The script for a typical Bitcoin transfer to destination Bitcoin address D simply encumbers future spending of the bitcoins with two ...
2
votes
1answer
67 views
Why CHECKLOCKTIMEVERIFY and CHECKSEQUENCEVERIFY opcodes have to be succeeded with DROP Opcode?
Opcodes that end in VERIFY generally do not leave anything on the stack. What's so different and the reasoning when designing these opcodes that CHECKLOCKTIMEVERIFY and CHECKSEQUENCEVERIFY opcodes ...
0
votes
1answer
110 views
ScriptCode field in P2SH-P2WPKH BIP-143 Test Vector
I'm trying to understand the meaning of scriptCode in the context of spending a P2SH(P2WPKH) UTXO.
I've already read the following answer to a similar question, but it does not fully address my ...
0
votes
4answers
235 views
OP_CHECKDATASIGVERIFY not working
I'm trying to generate a signature and pass it through OP_CHECKDATASIGVERIFY as part of a P2SH address on a regtest network. This results in the following:
Public Key:
...
0
votes
2answers
79 views
Can someone help me understand what these scripts mean?
Could someone explain what the commands i have in bold do? if possible. Thank you.
Transaction URL www.blockchain.com/btc/tx
Input Scripts-
ScriptSig: PUSHDATA(71)[...
0
votes
1answer
53 views
How to split the funds and send X% to fee wallet and the remaining funds to another wallet?
Anybody have any idea about how to do it?
User send the bitcoins
X% goes to fee wallet
remaining funds goes to service wallet
I'm trying to use the "sendfrom" but it's not working because he only ...
0
votes
0answers
36 views
OP_CHECKSIG NULLFAIL with btcdeb
I'm using btcdeb to understand script.
I pick a old random P2PKH transaction form mainnet, and paste unlocking script e locking script inside.
I know that this script is ok, because I can check on ...
0
votes
0answers
38 views
Uniquely identifying a UTXO
I see two ways:
Txid + index
Txid + script hash
Pros of the txid + index:
Simple and short
Cons of txid + index:
It relies on array iteration being deterministic and all third party ...
1
vote
1answer
70 views
what is the use of OP_PUSHBYTES
what is the meaning of this SCRIPTPUBKEY:
OP_DUP OP_HASH160 OP_PUSHBYTES_20 xxxxx....xxxxxxxx OP_EQUALVERIFY OP_CHECKSIG
in particular I searched for some documentation on OP_PUSHBYTES_X which only ...
