During his presentation at the Token2049 crypto conference in Dubai, Gavin Wood, the founder of Polkadot protocol, introduced an ambitious upgrade plan called Join-Accumulate Machine (JAM). This major upgrade aims to enhance Polkadot’s functionality and stability and was revealed alongside the announcement of a substantial 10 million DOT prize pool to incentivize diverse development efforts within the Polkadot ecosystem.

Polkadot Unveils JAM Upgrade


The upcoming JAM upgrade is set to overhaul Polkadot’s relay chain, the core data chain of the network, with a new, more modular design. This redesign will enable Polkadot to support generic services more efficiently while improving overall network stability. Notably, the parachains service within JAM will continue to support existing Substrate-based parachains, allowing developers to leverage Substrate for blockchain development within the Polkadot ecosystem. Importantly, these services will have expanded capacity with no predefined limits on code, data, or state, accommodating additional DOT deposits to increase capacity as needed.

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Technical Improvements and Incentives

Polkadot Price At The Time Of Writing This Article (Source: Tradingview)
Polkadot price at the time of writing this article (Source: TradingView)

JAM’s design incorporates several technical enhancements, including replacing WebAssembly with the Polkadot Virtual Machine based on the RISC-V ISA, known for its open-source custom processor development. Additionally, JAM introduces SAFROLE, a SNARK-based block production algorithm, aimed at optimizing network performance and scalability.

To support the vision of a decentralized protocol, Polkadot is committed to encouraging multiple client implementations through the JAM Implementer’s Prize, a significant 10 million DOT prize pool. This initiative seeks to foster diverse development efforts and reduce the risk associated with single implementation bugs impacting the entire network. Collaboration with existing funding initiatives within the Polkadot ecosystem, such as Decentralized Futures and Grants, underscores the network’s commitment to promoting innovation and technological advancement.


Gavin Wood’s unveiling of the JAM upgrade and the associated 10 million DOT prize signals Polkadot’s determination to enhance its protocol’s capabilities and attract broader adoption. The modular design of JAM and the emphasis on incentivizing multi-client implementations align with ongoing efforts to decentralize and strengthen the Polkadot network. As development progresses, Polkadot welcomes proposals from teams interested in implementing JAM across various programming environments, paving the way for a more robust and diverse ecosystem within the Polkadot community.

Despite recent advancements, the native token DOT has experienced a downward trend in price over the past month. However, Polkadot’s focus on technological innovation and ecosystem development remains steadfast, setting the stage for continued growth and evolution within the blockchain landscape.