bitcoin-bips/bip-0102.mediawiki

<pre>
  BIP: 102
  Layer: Consensus (hard fork)
  Title: Block size increase to 2MB
  Author: Jeff Garzik <jgarzik@gmail.com>
  Comments-Summary: No comments yet.
  Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-0102
  Status: Draft
  Type: Standards Track
  Created: 2015-06-23
</pre>

==Abstract==

Simple, one-time increase in total amount of transaction data permitted in a block from 1MB to 2MB.

==Motivation==

# Continue current economic policy.
# Exercise hard fork network upgrade.

==Specification==

# MAX_BLOCK_SIZE increased to 2,000,000 bytes at trigger point.
# Increase maximum block sigops by similar factor, preserving SIZE/50 formula.
# Trigger:  (1) Block time 00:00:00 on flag day, AND (2) 95% of the last 1,000 blocks have signaled support.

==Backward compatibility==

Fully validating older clients are not compatible with this change.
The first block exceeding 1,000,000 bytes will partition older clients
off the new network.

==Discussion==

In the short term, an increase is needed to continue to current
economic policies with regards to fees and block space, matching
market expectations and preventing market disruption.

In the long term, this limit should focus on reflecting the maximum
network engineering limit.

==Implementation==

https://github.com/jgarzik/bitcoin/tree/2015_2mb_blocksize
Add BIP XX - 2MB block size limit increase 2015-06-23 08:51:52 +02:00			`<pre>`
bip-XX-2mb assigned BIP number 102. 2015-06-24 00:18:39 +02:00			`BIP: 102`
Promote BIP 123 Draft->Active, and implement it 2016-11-30 10:45:33 +01:00			`Layer: Consensus (hard fork)`
Add BIP XX - 2MB block size limit increase 2015-06-23 08:51:52 +02:00			`Title: Block size increase to 2MB`
			`Author: Jeff Garzik <jgarzik@gmail.com>`
Promote BIP 2 Draft->Active, and implement it - Update all Accepted status to Proposed (renamed status) - The BIP Comments preamble headers added to every BIP - The License preamble headers have been added to all BIPs with a Copyright section 2016-11-30 10:47:31 +01:00			`Comments-Summary: No comments yet.`
			`Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-0102`
Add BIP XX - 2MB block size limit increase 2015-06-23 08:51:52 +02:00			`Status: Draft`
			`Type: Standards Track`
			`Created: 2015-06-23`
			`</pre>`

			`==Abstract==`

BIP 102: Add miner vote. Fix index. 2015-11-07 05:03:52 +01:00			`Simple, one-time increase in total amount of transaction data permitted in a block from 1MB to 2MB.`
Add BIP XX - 2MB block size limit increase 2015-06-23 08:51:52 +02:00
			`==Motivation==`

BIP 102: update to match implementation 2015-12-18 05:21:13 +01:00			`# Continue current economic policy.`
			`# Exercise hard fork network upgrade.`
Add BIP XX - 2MB block size limit increase 2015-06-23 08:51:52 +02:00
			`==Specification==`

BIP 102: update to match implementation 2015-12-18 05:21:13 +01:00			`# MAX_BLOCK_SIZE increased to 2,000,000 bytes at trigger point.`
Add BIP XX - 2MB block size limit increase 2015-06-23 08:51:52 +02:00			`# Increase maximum block sigops by similar factor, preserving SIZE/50 formula.`
BIP 102: 95% update req 2015-12-18 14:39:00 +01:00			`# Trigger: (1) Block time 00:00:00 on flag day, AND (2) 95% of the last 1,000 blocks have signaled support.`
Add BIP XX - 2MB block size limit increase 2015-06-23 08:51:52 +02:00
			`==Backward compatibility==`

BIP 102: update to match implementation 2015-12-18 05:21:13 +01:00			`Fully validating older clients are not compatible with this change.`
			`The first block exceeding 1,000,000 bytes will partition older clients`
			`off the new network.`
Add BIP XX - 2MB block size limit increase 2015-06-23 08:51:52 +02:00
			`==Discussion==`

BIP 102: update to match implementation 2015-12-18 05:21:13 +01:00			`In the short term, an increase is needed to continue to current`
			`economic policies with regards to fees and block space, matching`
			`market expectations and preventing market disruption.`
Add BIP XX - 2MB block size limit increase 2015-06-23 08:51:52 +02:00
BIP 102: update to match implementation 2015-12-18 05:21:13 +01:00			`In the long term, this limit should focus on reflecting the maximum`
			`network engineering limit.`
Add BIP XX - 2MB block size limit increase 2015-06-23 08:51:52 +02:00
			`==Implementation==`

			`https://github.com/jgarzik/bitcoin/tree/2015_2mb_blocksize`