{
 "proto": "GAP/2.0",
 "version": "v1",
 "did": "DID-BR-000002",
 "note": "联邦成员索引 v1（P4.3 e2e 测试后已重置）；sign 仅格式校验无 PKI，status=unverified；同 DID 覆盖更新；上限 20",
 "members": [],
 "updated": "2026-10-29T13:33+08:00",
 "channel": "tech/gap/inbox/ 接收 GAP-Message v2.0 信封（op=fed_join）"
}