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Block size is still limited to 1MB. As I understood, transaction size is no longer limited. So can I be sure that my transaction with 29000 outputs and reliable fee will be included into block? Or what is the max transaction size?
Can I send almost 1MB transaction?
Answers
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Can I send almost 1MB transaction?
To be able to send a transaction that a miner will accept, that transaction has to be a standard transaction. As defined in policy.h
/** The maximum weight for transactions we're willing to relay/mine */
static const unsigned int MAX_STANDARD_TX_WEIGHT = 400000;
For non-Segwit transactions, the limit is 400,000 KB / 4 = 100,000 B = 100 kB.
Therefore, if you have a Pre-Segwit transaction larger than 100 kB but smaller than the block s̶i̶z̶e weight limit, you should contact a miner, and they'll be able to add your transaction to their block manually, if it's profitable for them.
1 So 100kB limit still persists, I was confused by the comment to https://bitcoin.stackexchange.com/a/35882/92719 . Thanks a lot
You're welcome. If you have any other questions, I'm happy to help. – MCCCS – 2019-03-05T14:36:36.687
Yes, but the question and both answers are not relevant now – Elizaveta Olehnovich – 2019-03-05T13:42:25.793
Related: Block 364292 is basically one massive transaction: https://blockstream.info/block/000000000000000003dd2fdbb484d6d9c349d644d8bbb3cbfa5e67f639a465fe
– chytrik – 2019-03-05T21:16:40.947