DataDance

DDC (DataDance Chain) is an EVM-compatible Layer 2 built around turning personal data into an asset class, treating ownership, per-use authorisation and pricing as chain-level primitives. Individuals generate structured tags inside Data Wallet while raw data stays local, and only authorisation credentials and verifiable proofs are registered on-chain; brands buy verification results relevant to their own needs rather than raw datasets. Privacy is split across three techniques: TEEs isolate keys and the execution environment, MPC supports joint statistics without exposing inputs, and ZK proofs let data packages trade while staying verifiable; HD derivation and sub-addresses decouple behavioural identifiers from the primary identity.

Commercially it enters through data usage points, packaging audience data from brand marketing, tourism, sports events and film into assets that can be sold repeatedly: the project's site reports 1.12 billion data assets, more than 50 industry segments, over 100 brand partners and 100 million registered users. On 28 June 2026 DDC, the Commercial Press (Hong Kong) and IPDEX launched the CZ Life Global Book Club in Hong Kong, pairing a digital membership credential with physical book redemption and a record of participation; in October 2026 partners of the film Bureau 749 used its fan traffic data to sell cultural derivatives.