

What is the Aleo Blockchain Privacy Project? The latest comprehensive interpretation of Aleo! Aleo is a blockchain project focused on privacy protection, achieving higher privacy and scalability through zero-knowledge proof technology (ZKP). The core idea of Aleo is to enable users to authenticate and process data without revealing their personal data. So what is the Aleo blockchain privacy protection project? What are the characteristics of the Aleo blockchain privacy protection project? What is the current progress of the Aleo blockchain privacy protection project?
Today, the editor of this website introduced to you the project outline and latest progress of Aleo, and gave a detailed explanation of the puzzle algorithm update that the market is very concerned about. Friends who need it can take a look together!
Preview of the latest algorithm
Aleo network randomly generates a ZK circuit every hour; miners need to try different nonce as the input of the circuit during this hour, and calculate the witness (that is, all variables in the circuit, this calculation The process is also called synthesisize). After obtaining the Merkle root for the witness, it is judged whether it meets the mining difficulty requirements. Due to the randomness of the circuit, this mining algorithm is not friendly to GPUs and has great difficulty in computing acceleration.
Financing Background
Aleo completed a US$28 million Series A financing led by a16z in 2021, and a US$200 million Series B financing in 2024. Investors include Kora Management, SoftBank Vision Fund 2, Tiger Global, Sea Capital, Slow Ventures and Samsung Next, among others. The funding round values Aleo at $1.45 billion.
Project Overview
Privacy
The core of Aleo is zero-knowledge proofs (ZKPs) technology, which allows transactions and smart contract execution to be performed while maintaining privacy. User's transaction details, such as sender and transaction amount, are hidden by default. This design not only protects user privacy, but also allows selective disclosure when necessary, which is very suitable for the development of DeFi applications. Its main components include:
- Leo compiled language: adapted based on the Rust language and specially used to develop zero-knowledge applications (ZKApps), reducing developers’ requirements for cryptography knowledge.
- snarkVM and snarkOS: snarkVM allows calculations to be performed off-chain and only the calculation results are verified on-chain, thus improving efficiency. snarkOS ensures the security of data and computation and allows permissionless function execution.
- zkCloud: Provides a secure and private off-chain computing environment, supporting programmatic interactions between users, organizations and DAOs.
Aleo also provides an integrated development environment (IDE) and software development kit (SDK) to support developers to quickly write and publish applications; in addition, developers can deploy applications in Aleo's program registry without relying on third parties , thus reducing platform risks.
Scalability
Aleo adopts an off-chain processing method. The transaction is first calculated on the user device to prove it, and then only the verification result is uploaded to the blockchain. This method greatly improves the processing speed of transactions and the scalability of the system, and avoids network congestion and high fees similar to Ethereum.
Consensus Mechanism
Aleo introduces AleoBFT, a hybrid architecture consensus mechanism that combines the instant finality of validators and the computing power of provers. AleoBFT not only increases the decentralization of the network, but also enhances performance and security.
- Fast block finality: AleoBFT ensures that each block is confirmed immediately after generation, improving node stability and user experience.
- Decentralized guarantee: By separating block production from coinbase generation, the verifier is responsible for generating blocks and the prover performs proof calculations to prevent a few entities from monopolizing the network.
- Incentive mechanism: Verifiers and certifiers share block rewards; certifiers are encouraged to become verifiers by staking tokens, thereby improving the decentralization and computing power of the network.
Aleo allows developers to create applications that are not gas restricted, making it especially suitable for long-running applications such as machine learning.
Current Progress
Aleo will launch the incentivized testnet on July 1st, the following is some important latest information:
- ARC-100 Voting passed: ARC-100 ("Compliance Best Practices for Aleo Developers and Operators" proposal, involving compliance aspects, security measures such as locking and delayed payment of funds on the Aleo network) It's over and passed. The team is making final adjustments.
- Verifier Incentive Program: This program will be launched on July 1st to verify new puzzle mechanisms. The program will run until July 15, during which time 1 million Aleo points will be distributed as rewards. The percentage of points generated by a node will determine its share of rewards, with each validator needing to earn at least 100 tokens to receive rewards. Specific details have not yet been finalized.
- Initial supply and circulating supply: The initial supply is 1.5 billion tokens, and the initial circulating supply is approximately 10% (not yet finalized). The tokens, which come primarily from Coinbase missions (75 million), will be distributed over the first six months and include rewards for staking, running validators, and validating nodes.
- Testnet Beta Reset: This is the last network reset, no new features will be added when completed and the network will be similar to the mainnet. Reset to add ARC-41 and new puzzle functionality.
- Code Freeze: The code freeze was completed a week ago.
- Validation node expansion plan: The initial number of validating nodes is 15, and the goal is to increase to 50 within the year, and eventually reach 500. It takes 10,000 tokens to become a delegator and 10 million tokens to become a validator, and these amounts will gradually decrease over time.
Interpretation of Algorithm Update
While announcing the latest test network news recently, Aleo has updated the latest version of the puzzle algorithm. The new algorithm no longer focuses on the generation of zk proof results, and has removed MSM and NTT (2 The calculation module is used extensively to generate proof in zk. Previously, testnet participants used calculations to optimize the efficiency of the algorithm to increase mining revenue, focusing on the generation of intermediate data witness before generating proof. We will give a brief introduction to the latest algorithm after referring to the official puzzle spec and code.
Consensus process
At the consensus protocol level, the prover and validator in the process are respectively responsible for generating the calculation result solution and generating the block, aggregating and packaging the solution. The process is as follows:
- Prover calculates puzzles to construct solutions and broadcasts them to the network
- Validator aggregates transactions and solutions into the next new block, ensuring that the number of solutions does not exceed the consensus limit (MAX_SOLUTIONS)
- The legality of the solution needs to be verified The epoch_hash conforms to the latest_epoch_hash maintained by the validator, and its calculated proof_target conforms to the latest_proof_target maintained by the validator in the network. At the same time, the number of solutions contained in the block is less than the consensus limit
- Effective solutions can obtain consensus rewards
Synthesis Puzzle
The latest version The core of the algorithm is called Synthesis Puzzle. Its core is to generate a common EpochProgram for each epoch. By constructing an R1CS proof circuit for the input and EpochProgram, the corresponding R1CS assignment (that is, the witness mentioned by everyone) is generated and used as a leaf node of the Merkle tree. , after calculating all leaf nodes, the Merkle root is generated and converted into the proof_target of the solution. The detailed process and specifications for building Synthesis Puzzle are as follows:
1. Each puzzle calculation is called nonce, which is constructed from the address that receives the mining reward, epoch_hash and a random number counter. Each time you need to calculate a new solution, you can pass Update the counter to obtain a new nonce
2. In each epoch, the EpochProgram that all provers in the network need to calculate is the same. It is sampled from the instruction set by the random number generated by the current epoch_hash. The sampling logic is:
- instruction The set is fixed. Each instruction contains one or more calculation operations. Each instruction has a preset weight and operation count.
- Random numbers are generated based on the current epoch_hash during sampling, and are combined from the instruction set based on the random numbers. The weights obtain the instructions and arrange them sequentially. Stop sampling after the cumulative operation count reaches 97.
- Combine all instructions into an EpochProgram.
3. Use nonce as a random number seed to generate the input of the EpochProgram. 4. Aggregate the R1CS and input corresponding to the EpochProgram. witness (R1CS assignment) calculates
5. After calculating all witnesses, these witnesses will be converted into the leaf node sequence of the corresponding merkle tree. The merkle tree is an 8-element K-ary Merkle tree with a depth of 8
6. Calculate the merkle root and convert it into the proof_target of the solution, and determine whether it meets the latest_proof_target of the current epoch. If it is satisfied, the calculation is successful. Submit the reward address, epoch_hash and counter required to build the input above as the solution and broadcast
7. The same In epoch, the input of EpochProgram can be updated by iterating counter to perform multiple solution calculations
Changes and Impact of Mining
After this update, the puzzle has changed from generating proof to generating witness. The calculation logic of all solutions in each epoch is the same, but the calculation logic of different epochs is quite different.
From the previous test network, we can find that many optimization methods focus on using GPU to optimize the MSM and NTT calculations in the proof generation stage to improve mining efficiency. This update completely abandons this part of the calculation; at the same time, due to the generation of witness The process is generated by executing a program that changes with epochs, and the instructions therein will have some dependencies on serial execution, so achieving parallelization is a big challenge.
The above is the detailed content of What is the Aleo Blockchain Privacy Protection Project? The latest comprehensive interpretation of Aleo. For more information, please follow other related articles on the PHP Chinese website!

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