🛡️ Censorship Resistant
Anchored directly to the Bitcoin blockchain, did:btcr2 ensures DIDs cannot be blocked, erased, or overwritten, protecting identity operations from central or state-level interference.
did:btcr2
Bitcoin Reference 2.0: a censorship-resistant DID Method using the Bitcoin blockchain as a Verifiable Data Registry to announce changes to the DID document.
🕵️ Private
Avoids reliance on public registries by enabling the secure sidecar delivery of DID Documents (transferred directly from controller to relying party), preserving privacy by default.
🔏 Non-Repudiation with Time Anchoring
Every update is immutably timestamped using Bitcoin, preventing late publishing and enabling a cryptographic chain-of-custody suitable for high-stakes contracts.
🔄 Pairwise Non-Correlation
Supports private, purpose-specific identifiers for each relationship or task, significantly reducing the risk of tracking or correlation across digital interactions.
⚡ Efficient & Scalable Updates
DID creation is possible entirely off-chain at zero cost, while updates can be aggregated across an unlimited number of users, making long-term maintenance on Bitcoin practical and economical.
🔐 Closed-Loop Resolution
DID identifiers remain stable over time, even with frequent updates, making did:btcr2 suitable for lasting relationships, recurring interactions, and durable digital identities.