[{"type":"report","id":"BLC-STUDY-0512","title":"Groups - Membership Tokens","author":[{"literal":"Cheng Qian"}],"issued":{"date-parts":[[2025]]},"publisher":"Cheng Qian","URL":"https://eips.ethereum.org/EIPS/eip-8063","note":"Rights status: Official external source only. Not a licence to republish the paper."}]