Odaily Planet Daily News: Gavin Wood, founder of Polkadot, said in an article on the X platform: "I am very happy to release the initial Jam specification in the Gray Paper: a proposal for the future of Polkadot." The Gray Paper mentioned: "We have proposed a comprehensive and formal definition of Jam, a protocol that combines elements of Polkadot and Ethereum. In a single coherent model, Jam provides a global singleton, permissionless object environment - similar to the smart contract environment pioneered by Ethereum, coupled with secure side-channel calculations, which can run in parallel on a scalable network of nodes, which is a solution pioneered by Polkadot. Jam introduces a decentralized hybrid system that provides smart contract functions built around the in-core/on-chain duality of security and scalability. Although the smart contract function means that there are some similarities with the paradigm of Ethereum, the overall model of the services provided is mainly driven by the underlying architecture of Polkadot. The essence of Jam is permissionless, allowing anyone to deploy code on it as a service, pay corresponding fees based on the resources used by the code, and purchase and allocate core-time To guide the execution of this code, core-time is an elastic, universal measure of computation, similar to gas fees in Ethereum. We have envisioned a CoreChains service that is compatible with Polkadot.”