The global tagging ecosystem is fragmented and siloed, with redundant infrastructure and wasted developer hours due to duplicated efforts. Social media giants favor this disjointed structure.

Ethereum Tag Service (ETS) aims to solve these issues by creating a unified, blockchain-based tagging protocol that connects fragmented tagging systems. Similar to ENS but specifically for tagging, ETS brings a groundbreaking approach to provenance, attribution, and ownership, establishing a verifiable, decentralized tag graph. How does it work?
ETS introduces a unique design where tags, content tagging, and tagging data graphs are treated as composable units and services.
In ETS, tags themselves are ERC-721 non-fungible tokens, allowing any participant to reuse a tag across multiple tagging records. This creates flexible, many-to-many data relationships, with the tokenized tag acting as the core connector in the resulting tag graph. Known as "CTAGs," these composable tags have the potential to become data hubs linking people, places, and entities across Web3.
Tagging records in ETS differ from ENS in structure. While ENS records are controlled by the namespace owner, ETS records are stored in ETS core for the signing tagger via a relayer. These relayers are independently owned smart contracts, created through the ETS Relayer Factory contract, enabling developers to seamlessly integrate ETS into their systems.
Integrations with platforms like Farcaster, Lens, and Mirror will be essential for demonstrating ETS’s practical applications and fostering widespread adoption, enhancing user interactions across decentralized social media.
The ETS Protocol involves further intricacies, including tag ownership and revenue sharing for participants from fees on tagging record creation.