Share this article

First Grin Block Mined as Mimblewimble Privacy Crypto Goes Live

Grin, a privacy-focused cryptocurrency built on "mimblewimble" tech, has gone live on mainnet.

Updated Sep 13, 2021, 8:48 a.m. Published Jan 15, 2019, 5:44 p.m.
miner

Grin, a cryptocurrency that leverages the mimblewimble privacy technology, has just gone live on mainnet.

Named after the tongue-tying curse in the Harry Potter book series, mimblewimble is a protocol that fuses transactions together such that they are indecipherable – even on a public digital ledger.

STORY CONTINUES BELOW
Don't miss another story.Subscribe to the Crypto Daybook Americas Newsletter today. See all newsletters

While it has been in the works since late 2016, Grin saw its first block of transactions (after the network's genesis block) appear Tuesday at 17:38 UTC. A second block was mined less than a minute later, according to one block explorer.

A market for the cryptocurrency is already beginning to form, and though the first block only awards 60 grin, one investor has already bid 0.1 BTC for 1,000 grin (roughly $0.37 per token) on Bisq, a decentralized exchange listing the token. Another bid on Bitmesh values the token much more highly, offering 10 BTC for 1 grin (though the buy order is for 0.001 grin).

What is Grin?

It is the second cryptocurrency leveraging the tech to go live on mainnet, the first being created by an Israel-based startup known as Beam.

As highlighted by Grin developer “Yeastplume” in late October, though the two privacy-focused chains are separate, the projects are by no means in competition, with proponents at Beam even helping to raise funds at one point for Grin development.

Indeed, as stated on the official website, Grin is a fully donations-based initiative that is “launched fairly, free of [initial coin offering], pre-mine or founder’s reward.”

Unlike Beam, Grin has an unfixed monetary policy, meaning it issues tokens once every second.

This is meant to spur confidence in the coin as a currency, Yeastplume told CoinDesk back in December, adding that he didn’t want to “unfairly reward early adopters with an arbitrary deflationary halving schedule.”

And with over 7,000 followers on Grin’s official Twitter account, there is a sizable community supporting and watching the continued development of this privacy coin now that it has officially launched.

Crypto miner image via Shutterstock

More For You

KuCoin Hits Record Market Share as 2025 Volumes Outpace Crypto Market

16:9 Image

KuCoin captured a record share of centralised exchange volume in 2025, with more than $1.25tn traded as its volumes grew faster than the wider crypto market.

What to know:

  • KuCoin recorded over $1.25 trillion in total trading volume in 2025, equivalent to an average of roughly $114 billion per month, marking its strongest year on record.
  • This performance translated into an all-time high share of centralised exchange volume, as KuCoin’s activity expanded faster than aggregate CEX volumes, which slowed during periods of lower market volatility.
  • Spot and derivatives volumes were evenly split, each exceeding $500 billion for the year, signalling broad-based usage rather than reliance on a single product line.
  • Altcoins accounted for the majority of trading activity, reinforcing KuCoin’s role as a primary liquidity venue beyond BTC and ETH at a time when majors saw more muted turnover.
  • Even as overall crypto volumes softened mid-year, KuCoin maintained elevated baseline activity, indicating structurally higher user engagement rather than short-lived volume spikes.

More For You

Coreweave stock gains 9% on fresh $2 billion Nvidia investment

(Michael M. Santiago/Getty Images)

Already an investor in CoreWeave, Nvidia last September had agreed to purchase $6.3 billion of computing services from the AI infrastructure provider.

What to know:

  • CoreWeave shares jumped about 9% in pre-market trading after Nvidia invested another $2 billion in the AI-focused cloud company.
  • The new funding is intended to help CoreWeave expand to more than 5 gigawatts of AI-dedicated data centers by the end of the decade.
  • The deal deepens a yearslong collaboration in which Nvidia and CoreWeave will align on hardware, software and data center strategy, and test CoreWeave’s Mission Control resource-scheduling platform for potential integration into Nvidia’s ecosystem.