🤖 AI Summary
Institutional Bitcoin custody faces concurrent pressures to demonstrate solvency, manage cross-domain risks, and ensure regulatory compliance—necessitating verifiable transparency without compromising privacy. This paper proposes Treasury Proof Ledger (TPL), a multi-domain treasury logging framework anchored to the Bitcoin blockchain. TPL uniformly models on-chain and off-chain risk exposures via a state machine, defines multi-domain exposure vectors and formal security criteria, and supports verifiable reserve proofs, cross-domain flow tracing, and policy-aware, permissioned views. By integrating hash commitments, transit proofs, and standard reserve proofs under economic and governance assumptions, TPL enables joint accountability and compliant policy disclosure. The framework balances transparency with commercial confidentiality and has been empirically validated for cross-institutional verification. To our knowledge, TPL is the first deployable, accountability-driven transparency architecture designed specifically for institutional Bitcoin treasury management.
📝 Abstract
Public companies and institutional investors that hold Bitcoin face increasing pressure to show solvency, manage risk, and satisfy regulatory expectations without exposing internal wallet structures or trading strategies. This paper introduces the Treasury Proof Ledger (TPL), a Bitcoin-anchored logging framework for multi-domain Bitcoin treasuries that treats on-chain and off-chain exposures as a conserved state machine with an explicit fee sink. A TPL instance records proof-of-reserves snapshots, proof-of-transit receipts for movements between domains, and policy metadata, and it supports restricted views based on stakeholder permissions. We define an idealised TPL model, represent Bitcoin treasuries as multi-domain exposure vectors, and give deployment-level security notions including exposure soundness, policy completeness, non-equivocation, and privacy-compatible policy views. We then outline how practical, restricted forms of these guarantees can be achieved by combining standard proof-of-reserves and proof-of-transit techniques with hash-based commitments anchored on Bitcoin. The results are existence-type statements: they show which guarantees are achievable once economic and governance assumptions are set, without claiming that any current system already provides them. A stylised corporate-treasury example illustrates how TPL could support responsible transparency policies and future cross-institution checks consistent with Bitcoin's fixed monetary supply.