Bitcoin (BTC)

Coin Dance

Bitcoin Cash Protocol Development

Under Development

Bitcoin Cash Proposals Currently Under Development or Under Preliminary Discussion

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Representative Tokens

 Bitcoin Unlimited

Enable representative tokens via OP_GROUP

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Under Discussion
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Double Spend Notifications

 

New Bitcoin Cash network message for notifying nodes when a double spend of an unconfirmed transaction has occured.

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Under Discussion
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Bobtail

 

A Proof-of-Work Target that Minimizes Blockchain Mining Variance

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Under Discussion
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One Way Aggregate Signatures

 Electron Cash

A non-interactive fungibility solution for transactional privacy.

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Under Discussion
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Switch standard denomination to 'bits'

 

Switch the standard denomination of Bitcoin Cash to 'bits' (1 millionth of a Bitcoin) and switch the ticker from 'BCH' to 'BIT'.

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Under Development
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Binary Contracts

 Bitcoin Unlimited

Enable Binary Contracts via OP_DATASIGVERIFY

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Under Development
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Graphene

 Bitcoin Unlimited

An efficient method of announcing new blocks

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Under Development
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Revised DAA (w/ PID control)

 Bitcoin ABC | Bitcoin XT

Revise Difficulty Adjustment Algorithm to further improve block times using a new PID control algorithm

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UTXO commitments

 Bitcoin ABC | bitCrust

The construction of a 32-byte hash that is uniquely defined for a UTXO set, that is, the set of all unspent transaction outputs that exist at a certain block in the blockchain

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Under Development
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Double spend proof creation and forwarding

 Bitcoin Unlimited

Update to inform other nodes of double spend attempts immediately to improve the reliability of 0-conf transactions.

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Under Development
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BUIP087 nomenclature for 1/1,000,000 BCH

 Bitcoin Unlimited

Add "cash" in addition to "bit" as a term for 100 (one hundred) satoshi or 1/1,000,000 (one one-millionth) of a bitcoin cash BCH (i.e. 0.000001 BCH). Further, we propose the unofficial ISO code "XCH" to represent a cash unit (millionth of a BCH unit).

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Completed

Bitcoin Cash Proposals Either Completed or Currently Awaiting Activation on Mainnet

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Completed

Base32 addresses

 Bitcoin ABC | Bitcoin XT | Copay (Bitpay)

Support Base32 address format

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Completed

Revised DAA

 Bitcoin ABC | Bitcoin XT

Revise Difficulty Adjustment Algorithm

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Completed

Re-enable Satoshi Opcodes

 Bitcoin ABC | nChain

Re-enable the previously disabled opcodes which were part of the original Bitcoin design. This should enable smart contract compilers, and a variety of functionality on Bitcoin Cash.

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Completed

Default to 32MB blocks

 Bitcoin ABC

Start accepting blocks up to 32MB by default.

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Completed

Increase default datacarriersize to 220 bytes

 Bitcoin ABC

To disincentivize the use of other methods to embed data into the chain, in particular via P2SH, the default datacarriersize is raised from 80 byte to 220 bytes, so it becomes the "cheapest" way of embedding data into the chain.

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