bitcoin-1o1 on Nostr: what is #branle?

{ "id": "fa2d8ebf305876ec349fe4c01d85800f4b12f74032e702a95b2041c3a3413c17", "pubkey": "4cfd02fbafa82ea6099d1e9812e5e088edb46ea4689cd239687d870899c89d1e", "created_at": 1671553192, "kind": 1, "tags": [ [ "e", "246a6fe75f90cb97515cd630ca043b36449973eab0ff85e72e687d471715f375" ], [ "p", "5ca2b3cb4bdf9000625b97b0640343b8c2b2fafa78958ead33370656eedf91c4" ], [ "t", "branle" ] ], "content": "what is #branle?", "sig": "e899b1f9fadc6c5afe9fb6b93536911ef31953d08e2cf95fbc85fc59414ebb423f1f1b765001d6af0d5c3b5627b552a9fd0e5ad100e168c3f68946fedd854c5b" }