Universal Registrar Driver: did:btcr

This is a Universal Registrar driver for did:btcr identifiers.

Specifications

• Decentralized Identifiers
• DID Method Specification

Build and Run (Docker)

docker build -f ./docker/Dockerfile . -t universalregistrar/driver-did-btcr
docker run -p 9080:9080 universalregistrar/driver-did-btcr

Driver Configurations

The BTCR Driver can be configured with environment variables and/or passing application properties. In case no properties file is provided, the driver will try to load driver.properties. If a parameter has value as an environment variable, it will be used over its field in the properties file.

• Driver Variables Table

• Driver Defaults

• Example Application Properties and its Corresponding Environment Variables.

  Requirements:

  • Values have to be passed to the parameters without default values.
  • Private Key for the wallet must be dumped for an address of bech32 format!
  • BTCD or Bitcoin Core full node is required
  • The given bitcoin full node must be configured with txindex=1 (additionally addrindex=1 for BTCD)
  • Only the use of P2PKH addresses is supported in this version.

Operations

Please check:

• API Requests and API Responses

Implementation Notes

This iteration of the implementation is highly experimental. Stability issues are possible.

• Most importantly, tests and proper abstraction of the components are lacking.
• Transaction fees are not calculated per transaction; instead, default constant fees are deducted. This needs to be adjusted.
• The implementation process started with highly relying on the BitcoinJ library. Initial startup is blocking until BitcoinJ syncs up, it can take a long time.
• Failure mechanisms need to be refactored, especially rejected transactions.