Topic: [TESTED IT] Minimum transaction value - page 2. (Read 508 times)

Tested it. Read: first post - EDIT(2).

Blockexplorers are not nodes and they usually have weird criteria when relaying TXes as some of them are custom implementations, which may not conform to the rest of the network. One of the blockexplorers that I've tried before actually didn't allow me to push a SegWit non-dust transaction though the reference limit was lower than the 546 threshold. A more accurate representation would be to directly broadcast to the nodes on the network.

I was 1 sat off

To complete the test, you should do the same to a Bech32 address. Sweeping from the dust inputs into a new address to make it interesting.

Tested it!

Read the first post (EDIT).

Transactions which create outputs less than the dust limit are still valid transactions. Although you will have great difficulty trying to broadcast such a transaction, there is nothing which says it cannot be mined in to a block. The two most likely ways that this transaction ended up in a block was either that one or more nodes had altered their dustRelayFee setting to accept transactions which create smaller outputs, or a miner decided to include it directly in to the block they were mining.

Nodes verify both unconfirmed transactions, which they add to their mempool, and transactions included in the blocks they receive.

If a transaction is included in a block, but a node deems that transaction invalid, then the node will reject the entire block as invalid. Creating outputs less than the dust limit does not make a transaction invalid, however.

Never mind me, node makes up the bitcoin network, even without running full node, no mempool.

Nodes have a mempool filled with unconfirmed transactions, and miners run nodes too. Each node can decide whether or not to reject a transaction that hasn't been confirmed yet.
Most of them seem to agree you can't send dust.

I am kind of confused, I thought nodes validate confirmed transactions, taken from the mempool and included into a block by miner for it to be confirmed and get validated by nodes.

Can a transaction not up to the minimum amount of bitcoin be broadcasted into the mempool, included into a block and got confirmed but later got invadated by nodes? I was thinking the transaction will never even be broadcasted into the mempool at all.

Thanks, yes I also thought > 546 but then I saw this today

transaction hash edc38bfb0ee694aa1cca1a050ad002ae390b5c865a8062fa5f8630a9cab014ad
0.00000473 BTC to bc1q25unhdrmc0vnkwgg0vjtf6xmny8g0vykek6j8a

I didn't know that Legacy and Segwit have different limits.

edited:

Most nodes: 547 sat for legacy addresses, and a bit less when sending to Segwit.
It's quite useless to do, I've seen many transactions that pay more in additional fees than the dust is worth.

IIRC, the current dust limit is 546 satoshi unless, of course, you're dealing with the lightning network.

What is the minimum transaction value to be accepted by the nodes?


EDIT:

I tested it ...

1. Took UTXO 2c88d249902586908e55116527ff8cb4c14975bd233cb93a2b759db43a3fe358 vout 0 and created several transactions. Each transaction had 1 input and 18 outputs with increasing values (+1 sat), so a whole range could be tested at once eg. 200 sats - 217 sats, if valid or not.

2. Broadcast the transactions via different providers. It wasn't accepted until 546 sat output. Below, you can see the error messages.

https://blockchair.com
result: Invalid transaction. Error: dust

https://blockstream.info
result: sendrawtransaction RPC error: {"code":-26,"message":"dust"}

https://btc.network
result: Not a valid transaction hash!

https://bitaps.com
result: Mempool accept test failed: dust

3. The first accepted transaction you can check here:

tx hash e849378d3aedb4152aad3ac71f0c15f44ed3e29c90b6e2c1b25a2c8d23d34d62 block 736,966
minimum 546 sats, 18 outputs, each +1 sat


I also wanted to know if it's 546 or 547 sats that is accepted. Now we know that it's 546 sats for non-segwit addresses.






EDIT (2):


Tested it with a TX to the address bc1qwpc320c70sz7mf7v6vyu5v7lzjv3hlsa23d8ew (from a nice bitcointalk user   )

This time I made 3 transactions: 293 sats, 294 sats and 295 sats as I knew the limit 294 sats, but didn't know what was the accepted value.

Broadcast 293 sats transaction via same providers:

https://blockchair.com
result: Invalid transaction. Error: dust

https://blockstream.info
result: sendrawtransaction RPC error: {"code":-26,"message":"dust"}

https://btc.network
result: Not a valid transaction hash!

https://bitaps.com
result: Mempool accept test failed: dust


Broadcast 294 sats transaction ... accepted:

tx hash 42bd160a3a473cbe73c4178e126921b45697e810913c8bb21c610025462076bd block 737,081


Now we know that the lowest accepted value for segwit addresses is 294 sats.