Dcrtimejs

Javascript wrapper for dcrtime

Table of Contents

• Dcrtimejs
  • Table of Contents
  • Install
    • yarn
    • npm
  • Docs
    • DcrtimeResponse
    • StatusResponse
    • VersionsResponse
    • LastAnchorResponse
    • GetLastDigestsResponse
    • setNetwork
    • getVersions
    • getLastAnchor
    • getLastDigests
    • getStatus
    • timestamp
    • timestampFromBase64
    • Timestamp Results
    • verify
    • verifyFromBase64
    • Verify Results
    • getSHA256fromBase64
    • Usage

Install

If you want to use this library in a Nodejs environment make sure you are using Node v17.5+ because of fetch.

yarn

yarn add dcrtimejs

npm

npm install --save dcrtimejs

Docs

DcrtimeResponse

Properties

Name	Type	Description
digests	array	array of objects containing the SHA256, result, servertimestamp and chaininformation if applicable
id	String	unique identifier

StatusResponse

Properties

Name	Type
id	String

VersionsResponse

Properties

Name	Type
versions	Array.<Number>
routeprefixes	Array.<String>

LastAnchorResponse

Properties

Name	Type	Description
chaintimestamp	Number	chain timestamp if the tx block has more than 6 confirmations
transaction	String	id of the latest successfully broadcasted tx
blockhash	String	block hash
blockheight	Number	block height

GetLastDigestsResponse

Properties

Name	Type	Description
digests	array	array of objects containing the SHA256, result, servertimestamp and chaininformation if applicable

setNetwork

Sets the dcrtime server that will be used. Default is mainnet. If network is "testnet", it will be set to testnet. You can also send a custom URL if you want to use your own server

Param	Type
network	string

getVersions

getVersions returns the versions available and its route prefixes

Returns: Promise.<VersionsResponse> - A promise that returns VersionsResponse if resolved

getLastAnchor

getLastAnchor returns the last successful anchor info request

Returns: Promise.<LastAnchorResponse> - A promise that returns LastAnchorResponse if resolved

getLastDigests

getLastAnchor returns the last n digests submitted

Returns: Promise.<GetLastDigestsResponse> - A promise that returns GetLastDigestsResponse if resolved

getStatus

getStatus is used to ask the server if everything is running properly.

Returns: Promise.<StatusResponse> - A promise that returns StatusResponse if resolved

Param	Type	Description
id [optional]	string	Identifier that can be used if a unique identifier is required. A 200 Status and the unique identifier sent will be returned.

timestamp

Timestamps an array of SHA256 hashs using dcrtime.

Param	Type	Description
digests	Array[string]	Array of SHA256 hashs
id [optional]	string	Identifier that can be used if a unique identifier is required

Returns: Promise.<DcrtimeResponse> - The data from dcrtime.

timestampFromBase64

Timestamps an array of base 64 encoded strings using dcrtime.

Param	Type	Description
base64s	Array[string]	Array of base64 encoded strings
id [optional]	string	Identifier that can be used if a unique identifier is required

Returns: Promise.<DcrtimeResponse> - The data from dcrtime.

Timestamp Results

The 'result' key in the returned object means:

Result	Description
0	Invalid
1	The HASH has been sent to the dcrtime server to be anchored
2	Hash was already in the server

verify

Verifies if an array of SHA256 hashs is anchored to the blockchain.

Param	Type	Description
digests	Array[string]	Array of SHA256 hashs
id [optional]	string	Identifier that can be used if a unique identifier is required

Returns: Promise.<DcrtimeResponse> - The data from dcrtime.

verifyFromBase64

Verifies if an array of base 64 encoded strings is anchored to the blockchain.

Param	Type	Description
base64s	Array[string]	Array of base64 encoded strings
id [optional]	string	Identifier that can be used if a unique identifier is required

Returns: Promise.<DcrtimeResponse> - The data from dcrtime.

Verify Results

The 'result' key in the returned object means:

Result	Description
0	Invalid
1	Digest was found in the server and verified successfully
3	Digest was NOT found in the server and is not anchored

getSHA256fromBase64

Calculates the SHA256 hash of a 64bit encoded string

Param	Type	Description
base64	string	base64 encoded string

Returns: string - The SHA256 hash.

Usage

import dcrtime from "dcrtimejs";

dcrtime.setNetwork("testnet");
dcrtime.timestamp(["9F86D081884C7D659A2FEAA0C55AD015A3BF4F1B2B0B822CD15D6C15B0F00A08"], "dcrtimejs");
dcrtime.timestampFromBase64(["dGVzdA=="], "dcrtimejs");
dcrtime.verify(["9F86D081884C7D659A2FEAA0C55AD015A3BF4F1B2B0B822CD15D6C15B0F00A08"], "dcrtimejs");
dcrtime.verifyFromBase64(["dGVzdA=="], "dcrtimejs");