Afterchain is a deterministic, non-custodial, privacy-preserving protocol for post-mortem digital asset execution. A TransferVault transitions through a strict on-chain state machine — ACTIVE → ATTESTED → CLAIMABLE → EXECUTED — gated by cryptographic attestations, zero-knowledge proofs, and a multi-signature oracle layer. No custodians. No inactivity assumptions. No human executors.

The on-chain execution rail is publicly available for security review:

github.com/Afterchain/afterchain-protocol-public

The public shell contains:

• 23 Solidity contract source files
• 266 Foundry regression tests (all passing)
• Public security model documentation
• Groth16 verifier smart contracts
• Business Source License 1.1 (Change Date: 2045-01-01)

The off-chain orchestration layer (oracle attestation, evidence package assembly, deployment infrastructure) is closed-core and not included.

• A cryptographic execution layer for post-mortem digital asset transfer
• Designed for exchanges, custodians, and Web3 infrastructure
• Zero-custody by design — no contract ever holds funds as collateral or bond
• Deterministic and irreversible — mathematical liveness guarantee, not economic
• Privacy-preserving through Groth16 zero-knowledge proofs
• Multi-signature oracle layer with 3-of-5 threshold and 24h on-chain timelock
• Cross-chain replay protected at three independent enforcement layers

• Not a consumer wallet or application
• Not a legal testament
• Not a custodial or trust-based service
• Not dependent on inactivity timers or human judgment

The Afterchain protocol is protected under international patent application PCT/IB2025/057151.

The public shell is distributed under the Business Source License 1.1. Non-commercial review, academic research, and security audits are permitted without a separate agreement. Production use requires a commercial license.

For licensing, integration, or institutional due diligence inquiries:

👉 https://afterchain.io

© 2026 KOTIQ OÜ — All rights reserved.