DeleteAssetRoot

DeleteAssetRoot deletes the Universe root for a specific asset, including all asoociated universe keys, leaves, and events.

Source: universerpc/universe.proto

gRPC

rpc DeleteAssetRoot (DeleteRootQuery) returns (DeleteRootResponse);

REST

HTTP Method	Path
DELETE	/v1/taproot-assets/universe/delete

Code Samples

gRPC

Javascript

const fs = require('fs');
const grpc = require('@grpc/grpc-js');
const protoLoader = require('@grpc/proto-loader');

const GRPC_HOST = 'localhost:10029'
const MACAROON_PATH = 'TAPROOT-ASSETS_DIR/regtest/taproot-assets.macaroon'
const TLS_PATH = 'TAPROOT-ASSETS_DIR/tls.cert'

const loaderOptions = {
  keepCase: true,
  longs: String,
  enums: String,
  defaults: true,
  oneofs: true,
};
const packageDefinition = protoLoader.loadSync('universerpc/universe.proto', loaderOptions);
const universerpc = grpc.loadPackageDefinition(packageDefinition).universerpc;
process.env.GRPC_SSL_CIPHER_SUITES = 'HIGH+ECDSA';
const tlsCert = fs.readFileSync(TLS_PATH);
const sslCreds = grpc.credentials.createSsl(tlsCert);
const macaroon = fs.readFileSync(MACAROON_PATH).toString('hex');
const macaroonCreds = grpc.credentials.createFromMetadataGenerator(function(args, callback) {
  let metadata = new grpc.Metadata();
  metadata.add('macaroon', macaroon);
  callback(null, metadata);
});
let creds = grpc.credentials.combineChannelCredentials(sslCreds, macaroonCreds);
let client = new universerpc.Universe(GRPC_HOST, creds);
let request = {
  id: <ID>,
};
client.deleteAssetRoot(request, function(err, response) {
  console.log(response);
});
// Console output:
//  {
//  }

Python

import codecs, grpc, os
# Generate the following 2 modules by compiling the universerpc/universe.proto with the grpcio-tools.
# See https://github.com/lightningnetwork/lnd/blob/master/docs/grpc/python.md for instructions.
import universe_pb2 as universerpc, universe_pb2_grpc as universestub

GRPC_HOST = 'localhost:10029'
MACAROON_PATH = 'TAPROOT-ASSETS_DIR/regtest/taproot-assets.macaroon'
TLS_PATH = 'TAPROOT-ASSETS_DIR/tls.cert'

# create macaroon credentials
macaroon = codecs.encode(open(MACAROON_PATH, 'rb').read(), 'hex')
def metadata_callback(context, callback):
  callback([('macaroon', macaroon)], None)
auth_creds = grpc.metadata_call_credentials(metadata_callback)
# create SSL credentials
os.environ['GRPC_SSL_CIPHER_SUITES'] = 'HIGH+ECDSA'
cert = open(TLS_PATH, 'rb').read()
ssl_creds = grpc.ssl_channel_credentials(cert)
# combine macaroon and SSL credentials
combined_creds = grpc.composite_channel_credentials(ssl_creds, auth_creds)
# make the request
channel = grpc.secure_channel(GRPC_HOST, combined_creds)
stub = universestub.UniverseStub(channel)
request = universerpc.DeleteRootQuery(
  id=<ID>,
)
response = stub.DeleteAssetRoot(request)
print(response)
# {
# }

REST

Javascript

const fs = require('fs');
const request = require('request');

const REST_HOST = 'localhost:8089'
const MACAROON_PATH = 'TAPROOT-ASSETS_DIR/regtest/taproot-assets.macaroon'

let options = {
  url: `https://${REST_HOST}/v1/taproot-assets/universe/delete`,
  // Work-around for self-signed certificates.
  rejectUnauthorized: false,
  json: true,
  headers: {
    'Grpc-Metadata-macaroon': fs.readFileSync(MACAROON_PATH).toString('hex'),
  },
}
request.delete(options, function(error, response, body) {
  console.log(body);
});
// Console output:
//  {
//  }

Python

import base64, codecs, json, requests

REST_HOST = 'localhost:8089'
MACAROON_PATH = 'TAPROOT-ASSETS_DIR/regtest/taproot-assets.macaroon'
TLS_PATH = 'TAPROOT-ASSETS_DIR/tls.cert'

url = f'https://{REST_HOST}/v1/taproot-assets/universe/delete'
macaroon = codecs.encode(open(MACAROON_PATH, 'rb').read(), 'hex')
headers = {'Grpc-Metadata-macaroon': macaroon}
r = requests.delete(url, headers=headers, verify=TLS_PATH)
print(r.json())
# {
# }

Shell

$ tapcli universe delete --help

NAME:
   tapcli universe delete - delete a known asset universe root

USAGE:
   tapcli universe delete [command options] [arguments...]

DESCRIPTION:
   Delete a known asset universe root

OPTIONS:
   --asset_id value    the asset ID of the universe to delete
   --group_key value   the group key of the universe to delete
   --proof_type value  the type of proof to delete the roots for, either 'issuance' or 'transfer' (default: "issuance")
   

Messages

universerpc.DeleteRootQuery

Source: universerpc/universe.proto

Field	gRPC Type	REST Type	REST Placement
id An ID value to uniquely identify a Universe root. Nested REST Parameters id.group_key_str: string in query id.proof_type: string in query id.asset_id: string in query id.asset_id_str: string in query id.group_key: string in query	ID	object	query

universerpc.DeleteRootResponse

Source: universerpc/universe.proto

note

This response has no parameters.

Nested Messages

universerpc.ID

Field	gRPC Type	REST Type
asset_id The 32-byte asset ID specified as raw bytes (gRPC only).	bytes	string
asset_id_str The 32-byte asset ID encoded as a hex string (use this for REST).	string	string
group_key The 32-byte asset group key specified as raw bytes (gRPC only).	bytes	string
group_key_str The 32-byte asset group key encoded as hex string (use this for REST).	string	string
proof_type	ProofType	string

Enums

universerpc.ProofType

Name	Number
PROOF_TYPE_UNSPECIFIED	0
PROOF_TYPE_ISSUANCE	1
PROOF_TYPE_TRANSFER	2