ProofCore.BT: def of lawful-bytes@0.1.1.0
Import: import lawful-bytes@0.1.1.0/proof_core.bend as ProofCore
Lines 19-20 of lawful-bytes@0.1.1.0/proof_core.bend: https://jend.leeeet.dev/read.txt?path=lawful-bytes@0.1.1.0/proof_core.bend&start_line=19&end_line=20

import Base
import lawful-bytes@0.1.1.0/defs.bend as D
import lawful-arrays@0.1.0.0/proof_tree.bend as P

def BT(+len: U32, +t: P.Tree<U32>) -> D.Bytes:
  D.Bytes{len, P.fromT(U32, t)}

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=lawful-arrays@0.1.0.0/proof_tree.bend&name=Tree
  https://jend.leeeet.dev/definition.txt?path=lawful-arrays@0.1.0.0/proof_tree.bend&name=fromT
  https://jend.leeeet.dev/definition.txt?path=lawful-bytes@0.1.1.0/defs.bend&name=Bytes