Questions tagged [transaction-data]

Discussion of any data included in a Monero transaction

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Questions about calculating a transaction ID

As I know, Transaction ID is calculated from H( H(tx_prefix) || H(tx_stuff) || H(Signatures) ) Where tx_prefix = {tx version || keyoffset || keyimage || one-time addresses || extra} tx_stuff = {...
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1answer
39 views

How to get components of m (message) for verifying

I am trying to verify a transaction manually..but not knowing some components of message m. The message is derived from: m = H( H(tx_prefix), H(ss), H(range proofs) ) where tx_prefix = { tx ...
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1answer
38 views

Can EUR 10.000.000 be mined in ONE go?

I understood large sums of Monero can only be mined in several transactions? Could EUR 10.000.000 be mined in ONE transaction?
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22 views

How can I get real inputs from key_offsets? [duplicate]

As I get key_offsets from command "print_tx ... +json", how can I get the real inputs with those numbers? For example, using command below.. print_tx ...
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1answer
48 views

Using Trezor, trying to retrieve tx_key

I made sure to check that store-tx-info = 1 before sending. I seem to recall trying this in an earlier version and it was successful Now I am getting a result of: get_tx_key txid Wallet password: ...
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0answers
38 views

Build transaction offline

I'm trying to build a transaction hex string which I could later broadcast using the daemon rpc, the my-monero-core lib doesn't seem to have an API to do, so I used the code that I found here ...
2
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1answer
230 views

Error with transaction on the blockchain

Today I experienced the strangest error while sending moneros from one wallet to another. So thought I would share and see if anyone knows what was the cause or could shed anymore light on it. Sent ...
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2answers
45 views

Where is the encrypted Monero amounts in a transaction?

Looking at a monero transaction, I can't see any amounts. Where is this encrypted exactly? Take for example: https://moneroblocks.info/tx/...
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1answer
36 views

Do transactions to subaddresses look different on the blockchain?

If I sent from wallet A to wallet B's main address, then from wallet A to wallet B's subaddress, beyond normal "differences" in Monero transactions that obfuscate them, would the second transaction ...
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2answers
114 views

Where can I find the transaction amount checking logic in the source code?

I'm a newbie to Monero. My question is how Monero does the amount checking logic (the input amount should be larger than the output amount in a transaction) when a node receives a raw transaction. I ...
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0answers
72 views

Why my amount decryption fails sometimes?

Thanks to great answers to this question I managed to improve my output recognition code, however I still have issues with some payments. The amounts are garbled, which means the xor mask is probably ...
4
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1answer
170 views

How to create more outputs?

I forked aeon/monero for fun and to learn. I have seed nodes running, pools running, miners running. The blockchain syncs, nodes connect to eachother. I can send transactions from the cli wallet only ...
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1answer
79 views

How to decrypt the amounts properly?

I'm trying to decode outputs of transactions using the general algorithm described here. It flawlessly identifies my outputs, which proves I properly extract keys from extra and calculate valid Hs(8aR|...
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2answers
46 views

Is there an example of a transaction that makes use of tx_extra field? Is this public unencrypted data?

Is there a transaction that makes use of the tx_extra field that is viewable in the monero block explorer?
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1answer
36 views

What is miner_tx_hash?

I am trying to figure out the Daemon RPC API. Requesting a block with get_block(), the block header has a field miner_tx_hash. The block also contains a JSON field miner_tx, which contains the ...
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1answer
50 views

Monero cli show_transfers transactions for only a specific subaddress

I have a few subaddresses with small amount transactions. How do I view only these transactions that were sent to this subaddress? I already switched to the account account switch 1, but when I do ...
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1answer
24 views

What's the appropriate place to add additional validity checks for transactions?

What's the appropriate place to add additional validity checks for transactions? (check_tx_inputs?, does every tx pass through this, including during reorgs and such?)
2
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1answer
96 views

How to check if transaction pays to my address?

Let's assume I have an address, a secret view key for it, and a transaction. The transaction has been checked by a daemon to be valid. How do I figure out if the transaction pays something (and how ...
2
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1answer
48 views

How to get decimal number out of a decrypted ecdhInfo field?

I have a known amount encoded in ecdhInfo. I can decrypt ecdhInfo according to this formula: amount = 8 byte encrypted amount XOR first 8 bytes of keccak("amount" || Hs(8aR||i)) How can I get a ...
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2answers
92 views

When receiving funds, does the recipient know the address of the sender?

When someone sends funds he knows the address of the recipient. Is it the same for the one receiving the transaction?
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1answer
98 views

How to parse TX_EXTRA_TAG_ADDITIONAL_PUBKEYS from extra

Extending this question I am interested in parsing the TX_EXTRA_TAG_ADDITIONAL_PUBKEYS. Here is how the extra looks like: ix value byte 0 1 01 1 73 49 ... 32 230 e6 33 4 ...
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1answer
93 views

Can I process incoming transfers from the daemon RPC?

Can I process incoming transfers using only the daemon RPC and my private view key (so without a wallet)? Or how can I decrypt vout from the get_block output JSON?
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1answer
57 views

How can I distinguish between transactions (send vs. receive)?

How can I distinguish between the transactions I sent and those that came to me? If I decrypt the outputs using my view key and address in the amount field, I get balance / tx amount. But other fields ...
3
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1answer
79 views

Why does Monero create two or more inputs for transactions?

I have been playing around with a private Monero test network and I noticed that the transactions always have two or more inputs. When I inspected the true inputs of a transaction, I observed that one ...
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1answer
48 views

How to interpret the output from the 'print_ring' command in monero-wallet-cli?

My objective is to identify the true input of a transaction as the spender. Simply keeping track of transaction hashes, in which I am the receiver, does not seem to help, as my own coin can be ...
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1answer
71 views

Is there a way to see all the transactions coming through my Monero node?

I'm running monerod on my Ubuntu server and if I create a transaction using Monerujo using my node to process it, can I see it in my monerod console? If not, how can I see the transactions going ...
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0answers
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freezed computer -> force restart -> monero created address disappeared (but already sent coin to this address)

I downloaded official website's monero-gui-win-x64-v0.14.0.0\monero-gui-v0.14.0.0 on this wallet, i clicked to find receive address to send monero coins(xmr). so on this wallet i saw receive ...
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2answers
81 views

Can I identify the true input of a transaction as the spender on an explorer?

What information would I need to discern my true input to the transaction from the mixins? Can this be easily done?
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1answer
87 views

How to get the base transaction hash from the blocktemplate_blob [duplicate]

I want to know how to generate different blockhashing_blobs using blocktemplate_blob, returned by the RPC get_block_template method, with different extra fields. To do this, I need to manually ...
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1answer
67 views

Correctly retrieving the tx_pubkey from a transaction

I found, in the code, an example of a function that retrieves a public key from a transaction. The comments say that because of a previous bug, the tx may contain more than one public key. Do I ...
4
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1answer
225 views

How the receiver knows the amount that he received from the sender?

After the receiver scan the blockchain and identifies his own transaction, how does he know the amount that he received in that Tx? (Without off-chain communication) I appreciate a Technical ...
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0answers
36 views

Adding additional output field in transaction for output validation

Good day, I am trying to integrate a post quantum signature scheme into the Monero codebase, first I had so many issues with key sizes and key derivations, but right now it seems to be partially ...
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1answer
101 views

Generating key derivation in construct_miner_tx

Good day! I am trying to understand the construct_miner_tx function inside cryptonote_tx_utils.cpp and I am stuck on comparing what is being discussed in the zero to monero reference pdf regarding ...
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1answer
79 views

How to use the --extra-messages-file option?

monerod has an option to include an extra message in a coinbase transaction with --extra-messages-file. What format should the text in the file be? Hex, Decimal, or some other format? Once the ...
2
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1answer
83 views

How does one craft a Monero transaction locally, sign with their private key and then broadcast using javascript?

I'm looking for the specs to craft a Monero transaction and then sign this transaction with my Monero private spend key. Then broadcast this signed transaction to a node. I want to do this in ...
3
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1answer
310 views

How to create and sign a monero transaction by hand

As the title states... what I mean is what does the json/rpc command look like and can someone give an example and explain it? I would like to use RPC to get blockchain information, then manually ...
4
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1answer
340 views

What is the “SpendProofV1…” or “OutProofV1…” in the details of a sent transaction in the GUI?

I'm guessing it's either the Confidential Transaction range-proof? Or is it some kind of proof-of-payment I can send to the recipient to prove... payment...? Either way, what privacy or security is ...
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1answer
125 views

Can the sender of the transaction find out via any blockchain explorer, how much money he sent?

The sender has all 4 keys and can have the destination address, but does not have the tx_key, is there any way to find out, how much money he sent in a transaction using any blockchain explorer? Or ...
7
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1answer
576 views

Size requirements for different “pieces” of a Monero transaction

What are the different pieces of a transaction that take up precious bytes on the blockchain (range proof, MLSAG, inputs, outputs, ECDH, keys, TX extra, other)? How much space do they take up (in ...
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1answer
133 views

Does it make sense to run two nodes in order to disguise your identifiable information?

I'm repeatedly encountering statements related to passive monitoring. Like that: If you send XMR frequently to another person, an attacker passively monitoring both parties will know with ...
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1answer
104 views

Global index of output

Can anyone please tell me, is there a way to find out the future global index of the output that is currently in the tx pool?
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2answers
195 views

Is the 'pseudoOuts' of 'rctSig' the commitment on input amounts for simple RCT

It seems that the genRctSimple function will make a different input commitment for each input amount (line 675-683 in file src/rct/rctSigs.cpp). And summation of these input commitments = output ...
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1answer
90 views

Signatures instead of rct_signatures in a transaction

I'v noticed that the current version of transaction in monero is now: vin, vout, extra, rct_signatures etc. My question is - when I run monero in testnet environment on my computer, the transaction ...
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1answer
68 views

Trying to update a small analysis, does anyone have a source on current median transaction sizes?

Doing this little shitpost: https://www.reddit.com/r/Monero/comments/9s5n51/monero_selfish_mining_strategy_when_you_need_to/, need to update because it's currently using RingCT figures
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1answer
44 views

Command for returning transactions in json format to external code

I want to iterate (from a Python program) over all the outputs of all the transactions on the blockchain. Is there any RCP command or something like that, that returns a structure of transactions as ...
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1answer
155 views

The entire lifecycle of an XMR transaction with RingCT

I'm trying to understand the data structure in monerod and create a simple workflow for a transaction's life cycle. It doesn't look like this has been done post-RingCT activation, and I see a lot of ...
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1answer
68 views

Correlation between transaction vout key and an address

I'm working on a more robust implemenatation for a mining pool to figure out what the actual amount was it received from a block's reward. Retrieving a block using getblock includes the miner_tx ...
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1answer
98 views

Getting transaction hash / ID from the raw data

Is it possible to get the hash/ID of the transaction having its raw signed hex value only?
2
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1answer
83 views

How does key images work when you create a transaction using two or more of your previously unspent transaction outputs?

I've read key images are the critical element in Monero to avoid double spends. I think I understand how it works when you are using only one of your previously unspent transaction outputs to create ...
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1answer
125 views

Can the sender find an address of the receiver of the transaction when not using GUI wallet?

wallet-CLI was used to send the transaction, but the sender forgot, where he send the money, so is there a way to determine, where it was sent? I would prefer wallet-CLI or wallet-RPC solution if ...