const BITBOX = require('bitbox-sdk').BITBOX
const { GrpcClient } = require('grpc-bchrpc-node')
// it was 'bchd.ny1.simpleledger.io' below
const client = new GrpcClient({ url: 'bchd.greyh.at:8335' })
const validator = new slpjs.BchdValidator(client)
const bchdNetwork = new slpjs.BchdNetwork({ BITBOX, client, validator })
const addresses = ['simpleledger:qp.....', 'simpleledger:qq']
const balances = await bchdNetwork.getAllSlpBalancesAndUtxos(addresses)(...) below replacing path to my working directory
error in getAllUtxos: Error: 12 UNIMPLEMENTED: unknown method GetTrustedSlpValidation for service pb.bchrpc
at Object.exports.createStatusError (.../node_modules/grpc/src/common.js:91:15)
at Object.onReceiveStatus (.../node_modules/grpc/src/client_interceptors.js:1209:28)
at InterceptingListener._callNext (.../node_modules/grpc/src/client_interceptors.js:568:42)
at InterceptingListener.onReceiveStatus (.../node_modules/grpc/src/client_interceptors.js:618:8)
at callback (.../node_modules/grpc/src/client_interceptors.js:847:24) {
code: 12,
metadata: Metadata { _internal_repr: {}, flags: 0 },
details: 'unknown method GetTrustedSlpValidation for service pb.bchrpc'
}