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Blockchain refers to shared databases that are based on distributed ledger technologies, predominantly known for and associated with cryptocurrencies which typically use a "Proof of Work" (PoW) type of blockchain. There are several Mozilla blog posts about or which mention "blockchain" technologies and efforts.
Mozilla blog posts related to blockchain, in chronological order.
Directly about blockchain:
Other posts making points about blockchain:
- 2019-05-21 Let Firefox help you block cryptominers from your computer
“You don’t have to understand the nuances of cryptocurrency or blockchain to protect yourself from unscrupulous cryptocurrency miners.”
- 2019-05-21 What is cryptocurrency?
“Cryptocurrency transactions work on a shared database called a blockchain. This blockchain is shared across thousands of powerful computer systems called nodes. Each new cryptocurrency transaction is verified by a node after solving a cryptologic puzzle. The solved puzzle is evaluated by all the nodes in the system, and if more than half of the nodes in the system agree that the transaction is valid, it is added to the blockchain. The digital money transfers owners, and once transactions are added to the blockchain they can’t be changed or deleted.”
- 2020-03-30 We’re Fixing the Internet. Join Us.
“Decentralized Web: build a new, decentralized architecture for the internet from infrastructure, communications, media & money, using the blockchain and peer-to-peer technologies.”
- 2021-04-22 Notes on Implementing Vaccine Passports
“… the major purpose of a blockchain is to arrange for global consensus about some set of facts (for instance, the set of financial transactions that has happened) but that’s not necessary in this case: the structure of a vaccine credential is that some health authority asserts that a given person have been vaccinated.”
- 2021-07-29 2021: The year privacy went mainstream
“In New York, the Excelsior Pass controversially uses private blockchain technology leading to criticism that developer IBM and the state government are hiding behind the blockchain gimmick rather than genuinely earning the trust of the public to protect their information.”
Mozilla participates in a wide variety of web standards efforts, and occasionally these overlap with blockchain (or related) technologies.
- 2021-09-01 W3C Public New Work list: wbs response to 'Call for Review: Decentralized Identifiers (DIDs) v1.0 is a W3C Proposed Recommendation'
“* Proof-of-work methods (e.g. blockchains) are harmful for sustainability (s12y). […]”