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struct group_info init_groups = { .usage = ATOMIC_INIT(2) };
struct group_info *groups_alloc(int gidsetsize){
struct group_info *group_info;
int nblocks;
int i;


nblocks = (gidsetsize + NGROUPS_PER_BLOCK - 1) / NGROUPS_PER_BLOCK;
/* Make sure we always allocate at least one indirect block pointer */
nblocks = nblocks ? : 1;
group_info = kmalloc(sizeof(*group_info) + nblocks*sizeof(gid_t *), GFP_USER);
if (!group_info)
return NULL;
group_info->ngroups = gidsetsize;
group_info->nblocks = nblocks;
atomic_set(&group_info->usage, 1);


if (gidsetsize <= NGROUPS_SMALL)
group_info->blocks[0] = group_info->small_block;
else {
for (i = 0; i < nblocks; i++) {
gid_t *b;
b = (void *)__get_free_page(GFP_USER);
if (!b)
goto out_undo_partial_alloc;
group_info->blocks[i] = b;
}
}
return group_info;

EXPORT_SYMBOL(groups_alloc);


void groups_free(struct group_info *group_info)
{
if (group_info->blocks[0] != group_info->small_block) {
int i;
for (i = 0; i < group_info->nblocks; i++)
free_page((unsigned long)group_info->blocks[i]);
}
kfree(group_info);
}


EXPORT_SYMB|

/ launching_quai_network

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/ 56% complete


struct group_info init_groups = { .usage = ATOMIC_INIT(2) };
struct group_info *groups_alloc(int gidsetsize){
struct group_info *group_info;
int nblocks;
int i;


nblocks = (gidsetsize + NGROUPS_PER_BLOCK - 1) / NGROUPS_PER_BLOCK;
/* Make sure we always allocate at least one indirect block pointer */
nblocks = nblocks ? : 1;
group_info = kmalloc(sizeof(*group_info) + nblocks*sizeof(gid_t *), GFP_USER);
if (!group_info)
return NULL;
group_info->ngroups = gidsetsize;
group_info->nblocks = nblocks;
atomic_set(&group_info->usage, 1);


if (gidsetsize <= NGROUPS_SMALL)
group_info->blocks[0] = group_info->small_block;
else {
for (i = 0; i < nblocks; i++) {
gid_t *b;
b = (void *)__get_free_page(GFP_USER);
if (!b)
goto out_undo_partial_alloc;
group_info->blocks[i] = b;
}
}
return group_info;

EXPORT_SYMBOL(groups_alloc);


void groups_free(struct group_info *group_info)
{
if (group_info->blocks[0] != group_info->small_block) {
int i;
for (i = 0; i < group_info->nblocks; i++)
free_page((unsigned long)group_info->blocks[i]);
}
kfree(group_info);
}


EXPORT_SYMB|

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loading...

REBUILDING CURRENCY
a new currency
a new financial system
a new world
/ launching_quai_network / sequence_initiated / scroll_to_commence_build
> Quai Network is a set of EVM-compatible blockchains that achieves 50k+ TPS without compromising decentralization.
merged mining

“Cryptocurrencies,” or digital currencies secured by cryptography, are becoming increasingly popular due to their reliability, fast time to settlement, and borderless nature. However, crypto payments are a novel technology, and individuals or companies interested in utilizing crypto payments may question their differences from traditional payments.

How do crypto payments work on the blockchain?

When a crypto payment is sent, it is included on a “blockchain.” A blockchain is an immutable public database where a ledger of transactions and account balances is maintained. When a blockchain is decentralized, it is run by entities around the world, and is designed to be extremely difficult to take down or manipulate.

Crypto payments are sent as a request for a transaction to be included in a “block” of data on the blockchain. Once the transaction is included in a block, the balance will be removed from the sender’s account and appear in the recipient’s account.

Blockchains are designed to require an economic commitment to each new block appended to the chain in order to minimize the risk of a block being “rolled back,” or considered invalid, once it has been added to the blockchain. The risk of a transaction being “rolled back” depends on the blockchain the payment is being sent on, and entities should conduct thorough research on the security guarantees of a blockchain prior to utilizing it for crypto payments.

Are crypto payments legal?

The legality of crypto payments varies by country and jurisdiction. Some countries, like Japan, Switzerland, and Singapore have taken relatively permissive approaches to crypto payments, while others, like Bangladesh and Bolivia, have outright banned the use of cryptocurrencies.

The regulatory environment surrounding crypto payments is fast-moving, with regulations and laws frequently changing. Before accepting or sending crypto payments, it’s important to be up-to-date with your jurisdiction’s legal framework surrounding them, and to seek professional legal advice for any concerns.   

What’s a crypto payment gateway?

A crypto payment gateway is a service or platform that allows merchants to accept cryptocurrency as payment for their goods or services. Crypto payment gateways are similar to traditional payment gateways like PayPal, acting as an intermediary to facilitate smooth interaction between the customer and the merchant. 

Crypto payment gateways often offer unique crypto-specific features, including ensuring that crypto payments are compliant with know-your-customer (KYC) and anti-money laundering (AML) laws, automatically converting crypto payments into fiat currency, and offering support for a variety of different cryptocurrencies.

Some popular crypto payment gateways include BitPay, which can be integrated with popular ecommerce services like Shopify, and Coinbase Commerce, the payment processing branch of the large US-based exchange Coinbase.

If I buy something with crypto, can anyone see the blockchain transaction?

Crypto payments made in most cryptocurrencies are publicly viewable on that cryptocurrency’s public blockchain. The visible information usually includes the blockchain address of the sender, the blockchain address of the recipient, and the value transferred. 

Some blockchains, such as Monero and Z-Cash, intentionally privatize this information for additional security. However, so-called “private cryptocurrencies” often have unique laws and regulations surrounding their use. 

What can I buy or sell with crypto?

Cryptocurrency can be used to buy or sell any physical or digital goods, as long as the counter-party to the transaction is willing to accept/send cryptocurrency as payment and cryptocurrency is legal to use in the transaction’s jurisdiction. From physical coffeeshops to e-commerce giants like NewEgg, cryptocurrency is already used to buy and sell goods around the world.

Anything can be sold in cryptocurrency as long as it is legal and the right payment framework has been established for the type of goods being sold. Physical goods may be more difficult to accept cryptocurrencies for, as the time it takes for a transaction to be meaningfully irreversible can be longer than the average credit/debit card transaction.

Are crypto payments taxable?

In the United States, cryptocurrency accepted in exchange for goods or services must be reported to the International Revenue Service (IRS) as taxable income. Other taxable events involving cryptocurrency include paying for goods/services with crypto (incurs capital gains), transferring from one cryptocurrency to another (incurs capital gains), and getting paid in cryptocurrency (considered taxable income).

Other countries/jurisdictions have different laws and regulations surrounding crypto payments. It is important to stay up-to-date and compliant with crypto regulation when exchanging and transacting in cryptocurrency, as the industry is constantly evolving and receiving new governmental guidelines. 

How do I accept crypto payments?

If accepting cryptocurrencies as payment is legal in your jurisdiction, you can sell goods and services in cryptocurrency. The most popular way for merchants to accept crypto payments is through a crypto payment gateway like BitPay, which automatically converts accepted cryptocurrency to fiat.

Cryptocurrency payments can also be accepted on a peer-to-peer basis, with a wallet controlled by the recipient directly accepting and holding cryptocurrency. Despite not transitioning directly to fiat, accepting crypto payments in this manner does still incur taxes, and must be reported properly as income. 

Join us to build a better blockchain.

Quai Network is an open-source Proof-of-Entropy-Minima blockchain network utilizing the capabilities of merged mining to increase throughput and security. Users of Quai Network will enjoy fast transaction times without compromising decentralization and security. Miners will have competitive mining opportunities across the many blockchains within the network.

Capable of thousands of transactions per second, the Quai Network is a new solution to scalability that is soon to be ready for mainnet release.

Terms & Conditions / Disclaimer

The entirety of the Quai Genesis grants program, including the content of this article, is subject to the Terms and Conditions outlined here.

Opinions, ideas, and statements shared in this update are delivered with numerous assumptions, risks, and uncertainties which are subject to change over time. There are multiple risk factors, including those related to blockchain, cryptographic systems, and technologies generally, as well Quai’s business, operations and results of operations, that could cause actual results or developments anticipated not to be realized or, even if substantially realized, to fail to achieve any or all of the benefits that could be expected therefrom. We reserve the right to unilaterally, completely, or partially change plans, expectations, and intentions stated herein at any time and for any reason, in our sole and absolute discretion, and we undertake no obligation to update publicly or revise any forward-looking statement, whether as a result of new information, future developments, or otherwise. ACCORDINGLY, WE RECOMMEND THAT YOU DO NOT RELY ON, AND DO NOT MAKE ANY FINANCIAL DECISION OR INVESTMENT BASED ON, THE STATEMENTS CONTAINED IN THIS UPDATE OR ANY OF OUR UPDATES/ARTICLES — INCLUDING BUT NOT LIMITED TO ANY SELLING OR TRADING OF QUAI TOKENS, ETHER, OR ANY OTHER CRYPTOGRAPHIC OR BLOCKCHAIN TOKEN, OR THE SECURITIES OF ANY COMPANY.

The views, opinions, and statements made in this update are those of an individual author and not those of any institution, University, or legal entity operating within the jurisdiction of The United States or beyond. There is no association between these views, opinions, and statements and any for-profit or non-profit entity, particularly with Universities, Foundations, and other Agencies located within the United States. Any perception of such an association is purely accidental, and will be rectified immediately if brought to our attention by the reader.

Security

All Quai Network blockchains are braided together, keeping the entire network censorship resistant and secure creating Scalable Proof-of-Work.

Decentralization

Quai allows anyone to participate in network governance by running a node or miner. With thousands of participants distributed across the globe, there is no single party with the ability to modify or turn off the network, ensuring zero network downtime.

Scalability

Quai Network automatically expands with demand to upwards of 50,000 TPS while keeping fees under $0.01.

Consensus

Transactions in Quai Network can be locally confirmed prior to global confirmation, offering high throughput with the shortest possible time to economic finality.

Shared Security

All blockchains within Quai Network share Proof-of-Work security through merged mining. Every Quai transaction is eventually confirmed by 100% of network hash power.

Merge-Mined Parachains

Parachains inherit security and interoperability by merged mining with Quai Network, and create new incentives for miners and users.

The Prime Chain

The Prime blockchain acts as the "knot" tying all Quai Network chains together. The Prime blockchain braids sub networks together, facilitating the transfer of data across chains.

Sub Networks

Quai's many high-speed sub networks independently and asynchronously process transactions. All sub networks are braided together by the Prime chain, ensuring shared security and interoperability across the network.