A censorship-resistant DID Method using the Bitcoin blockchain as a Verifiable Data Registry to announce changes to the DID document.
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.
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.
Every update is immutably timestamped using Bitcoin, preventing late publishing and enabling a cryptographic chain-of-custody suitable for high-stakes contracts.
Supports private, purpose-specific identifiers for each relationship or task, significantly reducing the risk of tracking or correlation across digital interactions.
DID creation is possible entirely off-chain at zero cost, while updates can be aggregated, making long-term maintenance on Bitcoin practical and economical.
DID identifiers remain stable over time, even with frequent updates, making did:btcr2 suitable for lasting relationships, recurring interactions, and durable digital identities.