Counter-Offer Mechanism for Pair Settlement

Mechanism

The counter-offer protocol defines four message kinds: offer, counter-offer, acceptance, and rejection. An offer is a signed proposal of terms by one party, naming the prospective counterparty and the specific commitments under negotiation. A counter-offer is a signed proposal by the prospective counterparty that explicitly references the prior offer and proposes modified terms; it both rejects the prior offer's exact terms and constitutes a new offer in the opposite direction. An acceptance is a signed admission that binds the most recent offer or counter-offer into a settlement. A rejection is a signed termination of the negotiation that does not propose substitute terms.

Each message carries credentialed identity, references the prior message in the chain, and is timestamped against the negotiation's validity window. The architecture tracks the negotiation state — open, awaiting-response, accepted, rejected, expired — and admits messages only in transitions consistent with that state. When acceptance lands, the architecture binds both signatures to the matching terms and produces a single settlement record; the record carries not just the final terms but the entire chain of offers and counter-offers that produced them. Negotiation lineage is therefore retained structurally rather than reconstructed after the fact.

Downstream audit can reconstruct the full negotiation pattern. An auditor can ask which party initiated, how many rounds elapsed, which terms moved between rounds, whether either party engaged in patterns indicative of price discrimination across counterparties, and whether the final settlement matches the most recent admitted offer. Because every message is signed and lineage-bound, none of these questions requires trust in either party's after-the-fact narrative.

A defining structural property of the protocol is that no message is silently superseded. A new offer issued by a party who already has a standing offer of its own outstanding does not erase the prior offer; instead, the prior offer is automatically marked as withdrawn at the moment the new offer is signed, and the withdrawal event itself is admitted into lineage with a timestamp and a reason code. Similarly, a counter-offer does not delete the prior offer it modifies; the prior offer remains in the chain as the antecedent state, and the counter-offer is recorded as the response to it. The chain is append-only by construction, and any reconstruction of the negotiation at a later moment necessarily yields the same sequence of states, the same set of standing offers at any historical instant, and the same final disposition.

State transitions are governed by a small admissibility rule set. From the open state, an offer transitions the negotiation to awaiting-response on the receiving party's side. From awaiting-response, the receiving party may issue a counter-offer (returning the negotiation to awaiting-response on the originator's side), an acceptance (transitioning to accepted), or a rejection (transitioning to rejected). The expired state is reached automatically when the most recent offer's validity window closes without a response, and is itself a terminal state that prevents further messages in the same negotiation. Any message arriving in a state where its kind is not admissible is rejected at the protocol layer with a structured non-admission notice that is itself signed and retained, so that the attempting party cannot later claim to have transmitted a message that was simply ignored.

Operating Parameters

The validity-window parameter bounds how long an offer remains open for response before it expires automatically; expiration is recorded in lineage so that subsequent disputes cannot relitigate whether the offer was still standing at a given moment. The round-cap parameter optionally limits the number of counter-offer exchanges before the negotiation auto-terminates, preventing pathological back-and-forth. The term-scope parameter constrains which fields of an offer may be modified in a counter-offer; some negotiations may permit modification of price only, while others permit broader term renegotiation.

The simultaneity parameter governs behavior when both parties send counter-offers within an overlapping window; the architecture admits one as the canonical message based on a deterministic ordering rule and treats the other as an immediate counter, preserving the lineage of both. The withdrawal parameter specifies whether and under what conditions a party may rescind a standing offer before its validity window closes; rescissions are themselves signed events. The escalation parameter names a dispute or arbitration channel that may be invoked when the negotiation deadlocks under specific conditions.

A monotonicity parameter optionally constrains the direction in which a term may move across counter-offer rounds — for example, a price field may be required to move only downward from the seller's side and only upward from the buyer's side, ensuring that negotiation converges rather than oscillating indefinitely. A reservation parameter declares whether, and under what conditions, a party may attach a private reservation value to its offers that the protocol uses to auto-reject incoming counter-offers falling outside the reservation, without exposing the reservation itself to the counterparty. A confidentiality parameter governs which elements of the negotiation chain are visible to which credentialed roles in downstream audit; settlement terms may be public to a regulator while intermediate counter-offer prices are visible only to a more restricted role, with the credentialing layer enforcing per-element visibility.

A grouping parameter permits multiple negotiations between the same pair of parties to be bundled into a single composite negotiation in which acceptance binds all elements together or none, supporting package deals and bilateral cross-trades. A dependency parameter declares external preconditions — credit verification, regulatory clearance, third-party consent — that must be satisfied before an acceptance becomes binding; the precondition events are themselves credentialed and bound into the settlement record. A dispute-window parameter declares how long after settlement either party may invoke the dispute primitive against the executed terms, after which the settlement is treated as final and unchallengeable absent fraud.

Alternative Embodiments

Embodiments span charging-station spot pricing, tolling-rate negotiation, and freight-handoff term negotiation. At a charging station, a vehicle and a station controller exchange offers and counter-offers over price-per-kilowatt and reservation duration; the protocol completes within seconds and the resulting settlement governs the actual energy delivery. In tolling, a fleet operator and a roadway authority negotiate volume-discounted tolling rates over a longer window with multiple counter-offer rounds. In freight handoff, two carriers negotiate the terms under which one accepts custody of a shipment from the other, including timing, indemnification, and rate.

In peer-commerce embodiments, autonomous agents acting on behalf of human principals negotiate over goods or services under counter-offer protocol; the principals delegate authority through credentials, and the resulting settlement is auditable end-to-end. In machine-to-machine industrial coordination, robotic units negotiate task-handoff terms under tight latency constraints; the same primitive operates regardless of whether the negotiating parties are human, institutional, or autonomous. In legal-services contexts, the protocol supports formal contract negotiation with credentialed counsel as signing authority.

Additional embodiments include grid-balancing negotiations between distributed energy resources and a balancing authority, in which counter-offer rounds resolve dispatch quantities and prices over short windows under monotonicity constraints; insurance-claim negotiations between an insured party and a carrier, in which the term-scope parameter narrows admissible counter-offers to settlement amount and release conditions; and supply-chain replenishment negotiations between a buyer and one of several pre-credentialed sellers, in which the protocol runs in parallel across sellers and the first acceptance commits while open negotiations with other sellers are auto-rejected. In a regulator-supervised embodiment, a regulator subscribes to the negotiation lineage at a credentialed boundary so that anti-discrimination, anti-collusion, or fair-dealing rules can be evaluated against the actual sequence of offers rather than against participant attestations.

Composition

The counter-offer primitive composes directly with the no-consensus-settlement primitive: when a negotiation terminates without acceptance — whether through explicit rejection, validity-window expiration, or round-cap exhaustion — the no-consensus-settlement primitive produces a structured non-agreement record that captures the final state of the negotiation, the most recent offers from each side, and the reason for non-conclusion. Subsequent re-engagement between the same parties may reference the prior non-agreement record explicitly.

Counter-offer composes with cross-authority taxonomy: when negotiating parties operate under different classification schemes, counter-offers may carry translated terms admitted under a credentialed taxonomy translation. It composes with escrow primitives that hold collateral pending acceptance; the escrow is bound to the chain of offers and is released, returned, or rebound as the negotiation evolves. It composes with the dispute primitive: post-settlement disagreements about whether the executed terms match the accepted offer are resolved against the lineage-bound chain rather than against unwritten understandings. And it composes with credentialed-delegation primitives that govern when an agent may sign offers on behalf of a principal.

Composition with the cross-domain handoff primitive permits a counter-offer negotiation conducted within one operational domain to be exported across a credentialed domain boundary, carrying the full negotiation chain into the receiving domain's lineage so that downstream audit on the target side has the same visibility into the negotiation pattern as the source side. Composition with the n-party coordination primitives admits multi-party variants in which a counter-offer must be acceptable to a quorum of declared participants rather than to a single counterparty; the protocol generalizes by treating the receiving role as a credentialed group whose internal acceptance rules are governed by the group's own quorum policy. Composition with the audit primitive permits a third-party auditor to subscribe to negotiation events at a credentialed boundary and to receive lineage-bound copies of the chain under negotiated visibility terms, supporting regulatory oversight without altering the protocol structure between the negotiating parties.

Prior-Art Distinction

Conventional pair-settlement systems are predominantly take-it-or-leave-it: a single offer is presented, and acceptance produces a settlement while non-acceptance produces no record at all. Where negotiation is supported, it is typically out-of-band — conducted over messaging channels, voice, or paper — and only the final agreement is admitted to the settlement system. Out-of-band negotiation is structurally opaque: disputes about what was offered, when, by whom, and under what conditions cannot be resolved against the settlement record because the negotiation never entered it.

Some electronic-marketplace systems support bid-and-ask matching, but bidding is anonymous and aggregate, not bilateral and identity-bound. Some procurement platforms support counter-proposal flows, but the counter-proposals are typically not cryptographically signed, are not bound to lineage, and do not compose with structured non-agreement records. The architecture described here departs from prior art by making each negotiation message a credentialed, signed, lineage-bound observation; by binding the entire negotiation chain into the settlement record on acceptance; and by composing explicitly with no-consensus-settlement so that non-agreements are recorded structurally rather than dropped silently.

Prior-art electronic contracting systems, including conventional e-signature platforms, treat the contract as a finished document that the parties sign in sequence; the negotiation that produced the document is recorded, if at all, in correspondence external to the signing platform, and the platform's lineage extends only to the document and its signatures. The disclosed primitive inverts this relationship: the negotiation is the lineage-bearing artifact, and the settlement record is a derived disposition of the negotiation rather than a separate document. A consequence is that the primitive supports negotiation patterns — partial acceptance with reserved-term counter, conditional acceptance pending external verification, simultaneous-counter resolution — that document-signing platforms cannot represent at all because they presuppose a finished document as the unit of agreement. The primitive thereby serves not only as an audit improvement over conventional negotiation but as a structural enabler of negotiation patterns that prior art did not admit.

Disclosure Scope

The counter-offer primitive is disclosed in Provisional Application 64/049,409 within the matched-pair settlement framework. The disclosure covers the four-message protocol (offer, counter-offer, acceptance, rejection), the signed-and-lineage-bound treatment of each message, the negotiation-state machine, and the composition with no-consensus-settlement for terminated negotiations. Operating parameters disclosed include validity windows, round caps, term-scope constraints, simultaneity rules, withdrawal conditions, and escalation channels. Embodiments disclosed include charging-station spot pricing, tolling-rate negotiation, freight-handoff term negotiation, peer-commerce, machine-to-machine industrial coordination, and credentialed legal-services negotiation. The disclosure encompasses both human-signed and autonomous-agent-signed negotiation under credentialed delegation.

The recitation extends to apparatus components implementing the primitive: the message-construction modules that assemble offers, counter-offers, acceptances, and rejections under credentialed identity; the state-machine engines that track admissibility of each message kind against current negotiation state; the lineage-binding stores that retain the complete chain in append-only form across all participants; and the audit interfaces that expose the chain to credentialed third parties under negotiated visibility terms. The recitation is non-limiting as to the substantive subject matter of the negotiation: any bilateral or n-party negotiation whose participants wish to record the full negotiation history as a credentialed lineage is within scope, including but not limited to commercial trades, regulatory consents, custody transfers, professional engagements, and machine-to-machine task allocations. The disclosure also extends to the structural composition rules that bind counter-offer with adjacent primitives — escrow, dispute, cross-domain handoff, no-consensus-settlement, audit — recognizing that the value of the primitive lies as much in its composability as in its standalone operation.