There doesn't seem to be a need to convert to byte at cbor.encode function argument in constructAnchorsMap.

[hirokazu-kobayashi-koba-hiro]

ptyhon library

https://github.com/blockchain-certificates/lds-merkle-proof-2019-py/blob/master/lds_merkle_proof_2019/merkle_proof_2019.py#L53-L68

fixed code

constructAnchorsMap(anchors) {
    return anchors.map(anchor => {
      let values = anchor.split(':')
      values.shift()
      console.log(values)

      return values.map((value, index) => {
        if (index === 0) {
          return [index, Keymap.chain[value].id]
        }
        if (index === 1) {
          return [index, Keymap.chain[values[index - 1]].networks[value]]
        }
        return [index, cbor.encode(value) ] 
      })
    })
  }

Your review is appreciated.