Overview
RKP-3 (Hybrid) is ROOTKey’s enterprise-grade data processing protocol, combining the auditability of full on-chain anchoring with the throughput of off-chain processing. It is designed for organisations that cannot afford to sacrifice either - systems requiring both high availability under load and cryptographically verifiable records for regulatory or operational purposes. In RKP-3, critical metadata and proof-of-existence are anchored on-chain, while large payloads, high-frequency operations, or sensitive content are processed off-chain with cryptographic binding to the on-chain record. The integration model adapts to the data classification and performance requirements defined per vault or operation type. This protocol is the default recommendation for enterprise document management, multi-party workflows, and compliance-critical platforms operating at production scale.Architecture Overview
The classification layer determines routing based on vault configuration, operation type, and payload characteristics. Both paths are cryptographically linked - the on-chain record contains a hash binding to the off-chain record, ensuring end-to-end integrity across both paths. On-chain anchors include:- Operation type and timestamp
- Vault and asset identifiers
- SHA-256 hash binding to off-chain content (where applicable)
- Version and lineage markers
Request Limits and Throughput
For plan-specific throughput limits, visit Pricing.
Performance Indicators
Latency profile depends on routing - operations taking the on-chain path inherit blockchain confirmation times, while off-chain operations return near real-time. Routing is deterministic based on vault configuration.
Validation Capabilities
RKP-3 supports dual-path validation: verifiers can confirm the on-chain anchor independently, then validate off-chain content integrity by comparing against the bound hash. This provides the same cryptographic guarantees as RKP-1 for the audit layer, with the operational flexibility of RKP-2 for the data layer.
Strengths
- Enterprise-grade flexibility - route operations to on-chain or off-chain based on data classification, without changing the API contract
- Full auditability for critical events - on-chain anchoring for operations that must be independently verifiable
- High throughput for volume operations - off-chain path for high-frequency or large-payload workloads
- Cryptographic binding across both paths - integrity is guaranteed end-to-end across the full operation lifecycle
- GDPR compatibility - off-chain data is erasable; on-chain metadata does not contain personal data
- Version and lineage tracking - supports complex document lifecycle management with full history
- Multi-party workflow support - each party can independently verify their segment of a shared workflow
Weaknesses
- Higher architectural complexity - requires careful vault configuration and data classification design
- Mixed latency profile - operations are not uniformly fast or uniformly slow; predictability depends on routing configuration
- Storage dependency for off-chain records - full verification of off-chain content requires retained data
Typical Use Cases
Enterprise Document Management
Document creation, approval, versioning, and audit - with on-chain anchoring for critical events and off-chain storage for large files.
Supply Chain Traceability
Multi-party custody chains with high-frequency sensor data off-chain and key transfer events anchored on-chain for regulatory evidence.
Regulated Compliance Platforms
Platforms serving regulated industries - insurance, legal, public sector - where different data types carry different auditability obligations.
Financial Reconciliation Systems
Transaction-level records processed off-chain at volume, with settlement and reconciliation events anchored on-chain for audit.
Clinical Trial Data Management
High-volume trial data collected off-chain with critical protocol deviations, consent events, and final submissions anchored on-chain.
Critical Infrastructure Management
Operational data from critical systems where most telemetry is off-chain, but configuration changes and incident events require immutable on-chain records.
Compliance Alignment
ROOTKey is actively pursuing NIS2 alignment and ISO 27001 certification. Contact us at [email protected] for the current compliance posture, security documentation, and pending certifications.
Get started with a free account
Access sandbox and live environments immediately. No commitment required.
Request a technical briefing
Work with our engineering team to design your vault configuration and data classification strategy for RKP-3.