@Get('/:txid/vins')
  async getVins (@Param('txid') txid: string, @Query() query: PaginationQuery): Promise<ApiPagedResponse<TransactionVin>> {
    const vin = await this.transactionVinMapper.query(txid, query.size, query.next)

    return ApiPagedResponse.of(vin, query.size, vout => {