Pearl (PRL) | SafeTrade

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Pearl (PRL) is a Proof-of-Useful-Work Layer 1 blockchain designed to combine AI computation with blockchain mining. Instead of performing separate hash-based mining calculations, Pearl uses matrix multiplication performed by GPUs for AI inference and training as the underlying computational work used to secure the network.

The network is designed so that the same GPU computation can both perform useful AI workloads and contribute to Pearl's Proof of Useful Work consensus. PRL is the native cryptocurrency of the Pearl network and is issued through the protocol's AI-based mining process.

Project Background

Pearl Research developed Pearl around the concept of Proof of Useful Work, with the goal of replacing conventional computational mining with useful matrix multiplication. Matrix multiplication is a fundamental operation in modern AI systems, particularly in neural network training and inference, and is highly suited to parallel GPU hardware.

Pearl integrates its mining system directly into AI serving infrastructure. Its 2-for-1 architecture allows a GPU to perform an AI workload while simultaneously generating computational work eligible for Pearl block rewards. The project describes this as a way to turn AI compute from a pure operating expense into infrastructure that can also contribute to blockchain security.

The Pearl blockchain uses a UTXO-based accounting model derived from Bitcoin. Transactions consume existing unspent transaction outputs and create new outputs, while nodes propagate transactions and blocks through a peer-to-peer network.

Proofs of useful work are based on arbitrary matrix multiplication. Pearl's protocol introduces cryptographic commitments, matrix tiling, hashing, and zero-knowledge proofs to allow useful computation to be converted into verifiable blockchain work without requiring every node to repeat the complete computation.

The network uses a ZK proof system for block certificates. The current implementation includes a ZK Proof-of-Work circuit and verifier based on Plonky2 and STARK-oriented components. The blockchain also includes an XMSS implementation for post-quantum signatures and a privacy-preserving SPV light client.

Pearl's AI infrastructure includes integrations with vLLM and SGLang, allowing the Proof-of-Useful-Work system to operate alongside production AI inference workloads. The project has also developed CUDA-based mining infrastructure and GPU-specific kernels for its computation system.

History

Pearl Research was established around research into whether cryptocurrency Proof of Work could be based on real-world computation rather than intentionally useless hashing. The project's research focuses on making matrix multiplication both economically useful and cryptographically verifiable.

Pearl's technical research led to the development of its Proof-of-Useful-Work protocol, which uses matrix multiplication as the computational operation underlying mining. The project subsequently developed the protocol into a functioning Layer 1 blockchain and integrated it with AI serving infrastructure.

The Pearl network launched as a Bitcoin-derived Layer 1 with a modified Proof-of-Work system. The current implementation includes a full node, wallet, SPV client, ZK proving system, GPU miner, DNS infrastructure, and supporting developer tools.

During 2026, development expanded across the blockchain, wallet, zero-knowledge proving, GPU mining, and AI serving components. The public repository shows continued work on consensus, ZK verification, GPU kernels, wallet functionality, networking, and node performance.

The Pearl mainnet is operational and can be viewed through the project's public blockchain explorer. The network had passed block 104,000 by September 2026, with blocks continuing to be produced and transactions being recorded on the live chain.

Tokenomics and Emissions

PRL is the native cryptocurrency of the Pearl blockchain. The protocol defines a total supply of 2,100,000,000 PRL, with the smallest supported unit equal to 10^-8 PRL, known as a grain.

Pearl uses a smooth emission curve rather than Bitcoin-style periodic halvings. The emission schedule is designed around a polynomial decay, with the remaining unissued supply declining approximately in proportion to 1/t as block height increases.

The protocol uses a characteristic emission period of 650,226 blocks, corresponding to approximately four years at the target block interval. The emission curve is calibrated so that approximately 50% of the eventual supply is allocated by that point, while issuance continues through a long declining tail rather than ending through a fixed final halving.

The block subsidy is calculated from block height using the network's emission formula. Because the reward changes continuously with block height, Pearl does not use a fixed block reward or traditional halving schedule.

The target block interval is 194 seconds, or approximately 3 minutes and 14 seconds. Pearl uses the Weighted-Target Exponential Moving Average (WTEMA) difficulty adjustment algorithm to respond continuously to changes in network mining activity.

Mining rewards are distributed to participants that produce valid Proof-of-Useful-Work blocks. In addition to newly issued PRL, miners can receive transaction fees using the network's first-price transaction fee auction model.

Pearl's monetary design ties issuance directly to verifiable computational work. The protocol is intended to make GPU computation used for AI workloads simultaneously contribute to network security and PRL issuance.

Roadmap

Pearl's development roadmap focuses on expanding Proof-of-Useful-Work infrastructure, improving AI serving performance, strengthening the blockchain protocol, and making useful GPU computation increasingly accessible to network participants.

AI infrastructure development includes continued optimization of the Pearl mining kernel, integration with modern inference engines, support for additional GPU architectures, improved quantization, and higher-performance matrix multiplication implementations.

The protocol roadmap includes continued development of zero-knowledge Proof-of-Work verification, block certificate efficiency, networking, consensus hardening, wallet infrastructure, light clients, and post-quantum cryptographic components.

Pearl is also developing infrastructure for broader AI workloads. The project has identified applications including AI inference, training, GPU telemetry, model tracing, and other systems where verifiable computation can provide an economic or trust layer.

The broader vision is to create an AI-native monetary and trust infrastructure in which useful computation can simultaneously provide AI services, contribute to blockchain security, and generate PRL rewards. The project continues to publish research and engineering work around the mathematics, economics, cryptography, and GPU implementation of Proof of Useful Work.