did:stack

type

DID Method

Specification

Contact Name

Jude Nelson

Info

Name, Specification URL, Contact name and some relations are sourced from diddirectory.com. If you maintain this or any other didmethod, we encourage you to visit diddirectory and submit or update your data there if its not up to date!

Description −

Blockstack DID Method is a decentralized identity system built on the Blockstack Network's decentralized naming layer. The method leverages blockchain technology to bind human-readable usernames to public keys and data storage pointers.

Key aspects:

Uses a decentralized naming system as foundation for DIDs
Blockchain-agnostic design allows migration between chains
Currently operates on the Bitcoin blockchain
Supports both on-chain and off-chain DIDs
Provides human-readable names mapped to DIDs

The method features:

Global uniqueness of identifiers
Cryptographic ownership through public/private key pairs
Decentralized resolution through the Blockstack Network
Portable architecture that can migrate between blockchains
Flexible storage options for DID Documents (DDOs)

Technical Structure:

Method identifier: did:stack
Format: did:stack:v0:<address>-<index>
Address: base58check encoding of public key hash
Index: monotonically increasing integer for multiple DIDs per address

Core Operations:

DID Creation:
- Requires registering a name (on-chain or off-chain)
- Uses NAME_PREORDER and NAME_REGISTRATION transactions
- Generates unique DID based on address and index
DID Resolution:
- Translates DIDs to names and vice versa
- Returns authenticated DDO through JSON Web Token
- Validates signatures using secp256k1 keys
DID Updates:
- Supports key rotation through NAME_TRANSFER
- Allows DDO updates through storage location changes
- Implements NAME_UPDATE for zone file modifications
DID Deletion:
- Uses NAME_REVOKE transaction
- Supports both on-chain and off-chain revocation