Zcash ZEC
About
What Is Zcash (ZEC)?
Zcash is a decentralized cryptocurrency focused on privacy and anonymity. It uses the zk-SNARK zero-knowledge proof technology that allows nodes on the network to verify transactions without revealing any sensitive information about those transactions.
Contrary to a common misunderstanding, the majority of cryptocurrencies on the market, including Bitcoin (BTC), are not anonymous, but rather pseudonymous; while they do not explicitly reveal the identities of their users, each user has their own public address or addresses which can be traced back to them via the methods of data science and blockchain forensics.
Zcash transactions, on the other hand, still have to be relayed via a public blockchain, but unlike pseudonymous cryptocurrencies, ZEC transactions by default do not reveal the sending and receiving addresses or the amount being sent. There is an option, however, to reveal this data for the purposes of auditing or regulatory compliance.
Zcash was first released on October 28, 2016, and it was originally based on Bitcoin’s codebase.
Who Are the Founders of Zcash?
Zcash was founded in 2016 by cypherpunk, computer security expert and entrepreneur Zooko Wilcox-O'Hearn. He is also the founder of the for-profit Electronic Coin Company (ECC), which manages the development of Zcash.
Wilcox-O’Hearn has spent more than 25 years in the industry of cryptography and information security and has contributed to a number of projects, including the now-defunct electronic money firm DigiCash, peer-to-peer data storing software Mojo Nation and the Tahoe Least-Authority File Store filesystem.
He also founded Least Authority Enterprises, a technology company focused on improving digital security and preserving the fundamental right to privacy, and co-invented the BLAKE3 cryptographic hash function.
What Makes Zcash Unique?
Zcash’s main advantage lies in its optional anonymity, which allows for a level of privacy unattainable with regular, pseudonymous cryptocurrencies like Bitcoin or Ethereum.
ZEC transactions can be sent in two ways: transparent and shielded. Transparent transactions work in about the same way as in Bitcoin, whose codebase Zcash was originally based on: they are sent between public addresses and are recorded on an immutable public ledger (the blockchain). All essential information about these transactions is available online for anyone to see, including the sending and receiving addresses and the amount sent.
These public transactions do not reveal user identities in an overt manner: the only identifiers an outside observer can access from the blockchain are public addresses. However, through the efforts of data scientists and law enforcement over recent years, the methods of blockchain analysis have been developed to the point where an interested party can fairly reliably connect a public address on a blockchain to the real-world identity of its owner, essentially making private transactions impossible.
Shielded ZEC transactions, on the other hand, leverage the technology of zero-knowledge succinct non-interactive arguments of knowledge, or zk-SNARKs, in order to enable completely anonymous transactions to be sent over a public immutable blockchain. The fact that the transaction _has _happened is recorded on the ledger, but the sending and receiving addresses and the amount sent is not revealed to the public.
This allows Zcash to offer its users the right to privacy while still enjoying the advantages of a decentralized, permissionless digital currency.
How Many Zcash (ZEC) Coins Are There in Circulation?
Overall, Zcash tokenomics is similar to that of Bitcoin: it is a scarce mineable token with a total supply limit of 21 million coins.
New ZECs are created in the form of “block subsidies”: whenever a new block is mined and added to the end of the blockchain, a certain amount of coins is minted and split into “miner subsidy” and “founders’ reward” at a ratio of 80 to 20 percent respectively. The block subsidy is halved at regular intervals to slow down the issuance rate as the total supply of ZEC approaches its limit of 21 million.
The miner subsidy goes to the miner who has mined the latest block and the founders’ reward is distributed between Electronic Coin Company (ECC) founders, Zcash Foundation and ECC itself, as well as its employees. On Nov. 18, 2020, the block subsidy was halved from 6.25 ZEC to 3.125 ZEC, which was triggered at block 1,046,400. This was introduced under the Zcash Canopy upgrade, which also removed the Founders Reward. Instead, the remaining 20% will be divided among the Major Grants Fund, ECC and Zcash Foundation, at 8%, 7% and 5% respectively. The next, and fifth, Zcash network upgrade — Zcash NU5 — is estimated to go live on the testnet on Sept. 30, 2021.
Since launch there has been substantial interest in the ZEC to AUD and ZEC to EUR price pairs.
How Is the Zcash Network Secured?
Zcash network is secured by the proof-of-work SHA-256 hash function which belongs to the SHA-2 set of algorithms — same as Bitcoin.
AI Analysis
What is the Zcash (ZEC) cryptocurrency good for? What are its main use cases?
Zcash (ZEC) is a decentralized, open-source cryptocurrency that focuses on providing strong privacy and security features. It uses advanced cryptographic techniques, such as zero-knowledge proofs, to enable private and anonymous transactions. The main use cases of Zcash (ZEC) are:
- Private transactions: Zcash allows users to send and receive transactions without revealing their identities or the amount of ZEC being transferred. This makes it ideal for individuals and organizations that require financial privacy.
- Anonymity: Zcash's zero-knowledge proofs enable users to prove that a transaction is valid without revealing any sensitive information. This provides a high level of anonymity, which can be particularly useful for whistleblowers, journalists, or individuals living in countries with restrictive financial regulations.
- Secure payments: Zcash's advanced cryptography and secure protocol make it an attractive option for secure payments, especially in high-risk industries such as finance, healthcare, or government.
- Compliance and auditing: Zcash's private transactions can be audited and verified by authorized parties, such as regulatory bodies or auditors, without compromising the anonymity of the transacting parties.
- Micropayments: Zcash's low transaction fees and fast confirmation times make it suitable for micropayments, such as content monetization, online tipping, or small transactions.
- Cross-border payments: Zcash's decentralized nature and lack of borders make it an attractive option for cross-border payments, which can be faster, cheaper, and more secure than traditional payment methods.
- Cryptocurrency trading: Zcash is listed on various cryptocurrency exchanges, making it a popular choice for traders and investors looking to diversify their portfolios.
- Research and development: Zcash's unique cryptographic techniques and zero-knowledge proofs make it an interesting subject for research and development in the fields of cryptography, mathematics, and computer science.
- Decentralized applications (dApps): Zcash's blockchain can be used to build decentralized applications (dApps) that require private and secure data storage, such as voting systems, identity verification, or supply chain management.
- Institutional adoption: Zcash's emphasis on security, privacy, and compliance makes it an attractive option for institutional investors, such as hedge funds, family offices, or financial institutions, looking to invest in cryptocurrencies.
Overall, Zcash's unique features and use cases make it an attractive option for individuals and organizations seeking private, secure, and compliant cryptocurrency solutions.
What blockchain does Zcash use? Is it its own blockchain or built on top of another?
Zcash operates on its own blockchain, which is independent of other blockchain networks like Bitcoin or Ethereum. It was launched in 2016 as a privacy-focused cryptocurrency designed to enable selective transparency through advanced cryptographic techniques like zk-SNARKs (Zero-Knowledge Succinct Non-Interactive Arguments of Knowledge).
Key Details:
- Native Blockchain: Zcash (ZEC) has its own blockchain, separate from Bitcoin or Ethereum.
- Consensus Mechanism: Initially, it used Equihash (an ASIC-resistant PoW algorithm), but in 2020, it transitioned to ProgPoW (Programmatic Proof-of-Work) to resist ASIC mining dominance.
- Privacy Features: Transactions can be shielded using zk-SNARKs, making them confidential by default, though users can opt for transparent transactions.
- Forks & Upgrades: Zcash has undergone multiple upgrades (e.g., Sapling, Overwinter, Nu5) to improve scalability, privacy, and security.
Comparison to Other Blockchains:
- Bitcoin: Zcash is not built on Bitcoin’s blockchain but was inspired by its codebase (originally a Bitcoin fork).
- Ethereum: Zcash is not an ERC-20 token; it has its own blockchain and ecosystem.
So, in summary, Zcash is a standalone blockchain with its own consensus mechanism, privacy features, and governance model.
Is Zcash programmable? Does it support smart contracts or decentralized applications?
Yes, Zcash is programmable and supports smart contracts and decentralized applications (dApps). Zcash is based on the zero-knowledge proof (ZKP) protocol, which allows for private and secure transactions. To support smart contracts and dApps, the Zcash team has implemented several features:
- Sapling: Released in 2018, Sapling is an upgrade to the Zcash protocol that enables more efficient and private transactions. It also laid the foundation for smart contract support.
- ZoKrates: ZoKrates is a zk-SNARKs (Zero-Knowledge Succinct Non-Interactive Argument of Knowledge) toolkit that allows developers to create and deploy smart contracts on the Zcash blockchain. ZoKrates provides a set of libraries and tools for building, testing, and deploying zk-SNARKs-based smart contracts.
- Zcash Virtual Machine (ZVM): The ZVM is a virtual machine that allows developers to execute smart contracts on the Zcash blockchain. The ZVM is designed to be compatible with the Ethereum Virtual Machine (EVM), making it easier for developers to port existing Ethereum smart contracts to Zcash.
- Web3 libraries and tools: Zcash has developed Web3 libraries and tools, such as zcash-web3 and zcash-SDK, which provide a set of APIs and interfaces for interacting with the Zcash blockchain, similar to those available on Ethereum.
With these features, Zcash supports a wide range of use cases, including:
- Private and secure transactions
- Decentralized finance (DeFi) applications
- Non-fungible tokens (NFTs)
- Governance and voting systems
- Supply chain management
- Identity verification
However, it's worth noting that Zcash's smart contract ecosystem is still in its early stages, and the number of available dApps and smart contracts is limited compared to other blockchain platforms like Ethereum. Nevertheless, the Zcash team and community are actively working to expand the platform's capabilities and support for decentralized applications.
How fast are Zcash transactions? What is the typical confirmation time and throughput (transactions per second)?
Zcash transaction speeds and throughput depend on network conditions, transaction type (transparent or shielded), and network congestion. Here’s a breakdown of key metrics:
1. Transaction Confirmation Time
- Typical Block Time: ~75 seconds (adjusts dynamically based on network difficulty).
- First Confirmation: ~75 seconds (time for one block).
- Recommended Confirmations: 3–6 blocks (~3.75–7.5 minutes) for security, especially for large transactions.
2. Throughput (Transactions Per Second - TPS)
- Theoretical Max TPS: ~27 transactions per second (TPS) (assuming 1 block every 75 seconds with ~2,000 transactions per block).
- Real-World TPS: Typically 5–10 TPS due to network congestion, shielded transaction overhead, and miner prioritization.
3. Factors Affecting Speed
- Shielded vs. Transparent Transactions:
- Transparent (t-to-t): Faster (~5–10 TPS), similar to Bitcoin.
- Shielded (z-to-z): Slower (~1–3 TPS) due to cryptographic overhead (zk-SNARKs).
- Network Congestion: High demand can slow confirmations.
- Miner Fees: Higher fees may speed up confirmation times.
4. Comparison to Other Cryptocurrencies
- Bitcoin: ~7 TPS, ~10-minute block time.
- Ethereum: ~15–30 TPS (varies with network state).
- Zcash: Slower than transparent chains but competitive with privacy-focused coins like Monero (~10 TPS).
Conclusion
Zcash transactions take ~75 seconds per block, with 3–6 blocks recommended for security. Throughput is 5–10 TPS in practice, with shielded transactions being slower. For faster confirmations, users can opt for transparent transactions or pay higher fees.
Would you like details on optimizing transaction speed?
How much data can I store on the Zcash blockchain? Does it support on-chain data storage?
The Zcash blockchain is designed primarily for financial transactions, and it's not optimized for large-scale data storage. While it is technically possible to store small amounts of data on the Zcash blockchain, there are some limitations and considerations to keep in mind.
Zcash, being a fork of the Bitcoin protocol, has a similar transaction structure and limitations. Each transaction has a limited size, and the blockchain has a limited capacity for storing data.
Here are some key points to consider:
- Transaction size limit: The maximum size of a Zcash transaction is around 100 KB (kilobytes). This limit is in place to prevent overly large transactions from congesting the network.
- Data storage: Zcash transactions can include a small amount of data, known as "OP_RETURN" data, which can be used to store arbitrary data on the blockchain. However, the size of this data is limited to 80 bytes (not kilobytes) per transaction.
- On-chain data storage: While it's technically possible to store small amounts of data on the Zcash blockchain, it's not a scalable or cost-effective solution for large-scale data storage. The blockchain is designed for transactions, not data storage.
- Cost: Storing data on the Zcash blockchain can be expensive, as each transaction incurs a transaction fee. This fee can add up quickly, making it impractical for large-scale data storage.
- Alternative solutions: For larger data storage needs, it's recommended to use off-chain storage solutions, such as InterPlanetary File System (IPFS), decentralized storage networks like Filecoin or Sia, or traditional cloud storage providers.
In summary, while it's possible to store small amounts of data on the Zcash blockchain, it's not designed for large-scale data storage. The limitations on transaction size, data size, and costs make it impractical for storing large amounts of data. Instead, consider using alternative solutions for larger data storage needs.
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