PLC is a persistent global identifier system, which allows accounts to retain relationships while changing names or migrating between service providers. It makes use of cryptography and gives individuals (or organizations) direct control and ownership over their identitifier, but does not make use of any blockchain or cryptocurrency technology, and is inexpensive enough to provide as a no-cost service.
did:plc Directory
PLC is a persistent global identifier system, which allows accounts to retain relationships while changing names or migrating between service providers. It makes use of cryptography and gives individuals (or organizations) direct control and ownership over their identitifier, but does not make use of any blockchain or cryptocurrency technology, and is inexpensive enough to provide as a no-cost service.
PLC Organization
The PLC Organization is a small Swiss Association ("Verein") which provides open network identifier infrastructure. It serves as a neutral steward for the Public Ledger of Credentials (PLC) system, which provides persistent identifiers to over 40 million accounts in the atproto social web ecosystem.
PLC Organization
The PLC Organization is a small Swiss Association ("Verein") which provides open network identifier infrastructure. It serves as a neutral steward for the Public Ledger of Credentials (PLC) system, which provides persistent identifiers to over 40 million accounts in the atproto social web ecosystem.
Creating an Independent Public Ledger of Credentials (PLC) Directory Organization - AT Protocol
As the next step of maturing governance of the PLC identity system, Bluesky Social PBC is supporting the creation of an independent organization to operate the PLC directory.
did-method-plc/did-method-plc
Public Ledger of Credentials: a cryptographic, strongly-consistent, and recoverable DID method
Introducing plcbundle - Tree For You
A Transparent and Verifiable Way to Sync the AT Protocol's PLC Directory
did:plc Specification v0.1
DID PLC is a self-authenticating DID which is strongly-consistent, recoverable, and allows for key rotation.
First steps of the PLC organization - Public Ledger of Credentials Organization
One year ago, Bluesky Social PBC announced their intention to facilitate the creation of an independent organization to operate the Public Ledger of Credenti…
Adversarial PLC directory migration - microcosm
Contingency planning: what's our credible failover for the centralized underpinning of ATProto identities?
Adversarial PLC directory migration - microcosm
Contingency planning: what's our credible failover for the centralized underpinning of ATProto identities?
socialdept/plc-mint
Grind vanity did:plc identifiers on your CPU or Apple GPU, then claim them as a new account on any AT Protocol PDS.
did-method-plc/website/spec/v0.1/did-plc.md at main · did-method-plc/did-method-plc
Public Ledger of Credentials: a cryptographic, strongly-consistent, and recoverable DID method - did-method-plc/did-method-plc
did-method-plc/website/spec/v0.1/did-plc.md at main · did-method-plc/did-method-plc
Public Ledger of Credentials: a cryptographic, strongly-consistent, and recoverable DID method - did-method-plc/did-method-plc
Been thinking about plc.directory as a single-point-of-failure So as a learning exercise, I threw together DIDMARC - an example of an independent witness for the directory 🔍 This approach uses Starknet to be fully trustless, but a trusted mirror could perform similar checks to identify abuse
DIDMARC: DID Mapping Alignment, Reporting & Conformance
didmarc.devdid:cow: Another idea to billionaire-proof ATProto IDs, also "art of using a blockchain without using a blockchain". Blockchain-managed wrapper ID, no tx to create, points to a did:plc/did:web but you can move it if something goes wrong. Got carried away and made a resolver and front-end cow.watch
did:cow
cow.watch
Edmund Edgar
Wrote up an idea to improve the DID:PLC system to protect us from the inevitable corporate enshittification phase when the centralized server stops serving mirrors for a bit then starts screwing us over. It's kind of "art of using a blockchain without using a blockchain" github.com/edmundedgar/did-plc-p2p-guard…
09.06.2026 - release 1 of 3 Sovereign social infrastructure, one layer at a time. We’re now mirroring the did:plc directory - where identities live - on European infrastructure: plc.eurosky.network Decentralisation means not depending on a single directory.
