Registry Contracts

One of the earliest interactive contracts on Ethereum, allowing users to stake claims and leave permanent messages on the blockchain.

The official Ethereum GlobalRegistrar deployed by the go-ethereum team in August 2015. This was the canonical name registry contract embedded as pre-compiled by

Fixed fee name registry deployed 7 August 2015, the night before NameRegistry and by the same account. Same 69 ETH fee, no read functions.

The second deployment of the official Ethereum GlobalRegistrar, deployed nine days after the first. Both deployments use identical bytecode pre-compiled and emb

Early Frontier-era name registry contract (Aug 8, 2015, block 51807) implementing reserve, register, and setContent functions for on-chain name resolution.

Fixed-fee name registry from Day 9 of Ethereum (Aug 8, 2015). Reserve names for 69 ETH, resolve addresses. A precursor to ENS.

A second deployment of the Ethereum GlobalRegistrar — the early name registry that predated ENS — made on August 10, 2015.

Owner-controlled dynamic-array member registry.

Owner-controlled member registry with array + mapping tracking.

Owner-controlled member registry using sequential id + mapping storage.

The canonical name registration contract hardcoded into go-ethereum — Ethereum's first mainnet naming system, mapping human-readable strings to addresses. A dir

The content hash registry hardcoded into go-ethereum — maps key hashes (contract code hashes, domain name hashes) to content hashes. Part of the three-contract

The Ethereum Foundation's Frontier URL-hint registrar, hardcoded into go-ethereum.

A 2015 public key directory that keys every entry off tx.origin instead of msg.sender.

Arbiter registry by Vitalik Buterin (Sep 2015). Pay 1+ ETH to list yourself. Fee decays 50%/month. One of the earliest on-chain reputation systems on Ethereum.

Vitalik's first multi-auction ad registrar (Oct 6, 2015). EXACT byte-for-byte match.

A first come first served name registry from November 2015: claim a bytes32 alias for your address, and it can never be released.

Records marriages and life events on the Ethereum blockchain with partner details, dates, and status tracking.

DigixDAO owner + admin-ACL config registry (typed key/value store). CALLCODEs a Directory library clone for its admin set. Anthony Eufemio, Jan 2016.

DigixDAO owner + admin-ACL config registry (typed key/value store). CALLCODEs a Directory library clone for its admin set. Anthony Eufemio, Jan 2016.

DigixDAO owner + admin-ACL config registry (typed key/value store). CALLCODEs a Directory library clone for its admin set. Anthony Eufemio, Jan 2016.

DigixDAO owner + admin-ACL config registry (typed key/value store). CALLCODEs a Directory library clone for its admin set. Anthony Eufemio, Jan 2016.

DigixDAO owner + admin-ACL config registry (typed key/value store). CALLCODEs a Directory library clone for its admin set. Anthony Eufemio, Jan 2016.

DigixDAO owner + admin-ACL config registry (typed key/value store). CALLCODEs a Directory library clone for its admin set. Anthony Eufemio, Jan 2016.