Who Can Sign What: How Blockchains Handle Authorization

The article explores the authorization mechanisms of Ethereum, Stellar, and Solana blockchains, focusing on transaction structures and how different chains handle authorization. Stellar’s structured authorization model is highlighted, offering more flexible transaction handling, such as fee sponsorship and multi-party authorization, compared to Ethereum’s more linear approach. Solana’s account model allows for permissions to be inherited across contract calls but lacks the granularity of Stellar’s authorization. Cross-contract interactions show Stellar’s partial call authorization, whereas Solana relies on explicit account listings, and Ethereum has limitations. Stellar’s authorization flexibility offers significant advantages for applications like fee sponsorship and cross-contract interactions.