It also allows partially executed scripts to make visible their execution code only as the code is used. It is a scripting facility that increases the size of allowed scripts. Tapscript is the next innovation of the Taproot soft fork. “When Bitcoin is sent to a MAST output, the Bitcoin is locked to the Merkle root of these scripts, and to redeem the bitcoin, the spender must reveal the script which they are using to unlock the bitcoin, as well as proof that this script is included in the Merkle root of the previous transaction,” according to a research paper. The spender of a MAST output only has to reveal the script they used. Bitcoins are locked in a script, before locking them and unlocking them in another script. funds only disbursed after a certain period of time, a multi-signature condition, or other conditions. MAST gives a merkelized hash of the information.īitcoin smart contracts are written in a language called Script, which allows conditions to be specified to unlock finds e.g. Merkelized Alternative Script Trees (MAST) hides the conditions of the smart contract and compresses the information. If Person A send Person B 1 BTC, but Person A only wants it to be given to Person B after a number of conditions are met, then all of those conditions would be visible on the public ledger, which could compromise the privacy of Persons A & B. It can provide user choice, where some transactions can be visible and others public. BIP342 enables a type of payment called Pay-to-Taproot, which allows users to transact via a Schnorr public key or other ways. The three proposals are said to make Bitcoin more private and space-efficient by aggregating multiple signatures into one. BIP340 defines a standard for Schnorr signatures and the Taproot construction.
Taproot was agreed upon almost unanimously on June 13, 2021, following consensus changes in Bitcoin Improvement Proposals BIP340 (Schnorr signatures), BIP341(SegWit output conditions), and BIP342 (Validation of taproot scripts). The initial rumblings of a new soft fork came about as early as Jan 2018 from Bitcoin Core developer Gregory Maxwell.
#Upgrade bitcoin core upgrade
The Bitcoin Taproot upgrade is the first soft fork after the Segregated Witness (SegWit) upgrade in 2017.
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