- is_a::[[Citation Form]]
- has_status::[[Seed Stage]]
- in_domain::[[Self-Sovereign Identity]]
- in_precinct::[[Garden Precinct]]
- cites_work_by::[[Christopher Allen]]
Allen (2024) Progressive Trust
Bibliographic Entry
Progressive Trust, 2024, [developer reference], Christopher Allen, Blockchain Commons. Retrieved from https://developer.blockchaincommons.com/progressive-trust/
Summary
Progressive trust rejects the binary trusted/untrusted model. Trust is a progression: initial contact → identity verification → context exchange → commitment → collaboration, with each stage requiring verification before advancing. The framework applies to both human relationships and technical systems — authentication, disclosure, and commitment deepen together rather than being set to maximum strength upfront.
Key Points
Trust is not binary. Systems that model trust as trusted/untrusted miss the spectrum between first contact and deep collaboration. Progressive trust maps this spectrum explicitly.
Verification before advancement. Each stage of trust deepening requires some form of verification — not necessarily cryptographic, but appropriate to the stage. A shared introduction (Level 0 in IFP terms) is sufficient for initial contact; verified public keys (Level 2) are appropriate for sustained exchange.
Disclosure deepens with trust. What you share is proportional to how much trust has been established. This is not a privacy setting — it is a natural consequence of the relationship stage.
Commitment deepens with trust. Early-stage relationships involve low-commitment exchanges (gossip, context sharing). Deeper trust enables higher-commitment actions (recommendations, collaboration, shared projects).
Applies to both human and technical systems. The same progressive model governs how people build trust in face-to-face relationships and how agents build trust in protocol exchanges.
Influence
Progressive trust is the conceptual foundation for two of IFP’s core models: progressive authentication (IFP-5, four levels from shared secret to DID-bound identity) and disclosure tiers (IFP-12, six tiers from public to close). IFP operationalizes progressive trust for agent-to-agent communication.
Sources
- https://developer.blockchaincommons.com/progressive-trust/
Relations
- relates_to::[[Progressive Authentication as Trust Deepening]]
- IFP’s four authentication levels implement progressive trust for agent identity verification.
- relates_to::[[Disclosure Tier Hierarchy for Persona-Peer Relationships]]
- IFP’s disclosure tiers implement progressive trust for information sharing boundaries.
- relates_to::[[Granularity of Progressive Authentication Stages]]
- The progressive trust framework describes a spectrum — the inquiry asks whether IFP’s four discrete stages capture the right boundaries.
- relates_to::[[Progressive Disclosure Over Eager Loading]]
- Progressive disclosure is the information-sharing expression of progressive trust.
- relates_to::[[Authority Flows from the Person]]
- Progressive trust assumes the person controls their own trust progression — no external authority decides when to deepen.
- relates_to::[[Conversation Temperature as Protocol Cadence Spectrum]]
- Temperature and trust deepen in parallel — cool conversations at low trust, hot collaboration at high trust
- relates_to::[[Allen (2022) Progressive Trust]]
- The 2022 developer reference operationalizes the concepts here with implementation vocabulary and domain examples; this node provides the why, the developer reference provides the how
- relates_to::[[Allen (2023) A Laypersons Intro to Schnorr]]
- Progressive trust architectures can use threshold signatures for escalating trust levels — requiring more signers as trust requirements increase
- relates_to::[[Allen (2023) Data Minimization and Selective Disclosure]]
- Progressive trust requires a disclosure mechanism; this article specifies the technical requirements for selective disclosure as that mechanism
- relates_to::[[Allen (2023) Least and Necessary Design Patterns]]
- Progressive trust is the interaction model for implementing necessary access — trust and data disclosure increase incrementally based on demonstrated need
- relates_to::[[Allen (2023) Open Silicon]]
- Hardware trust is the base layer of progressive trust: trust cannot progressively increase if the hardware foundation is unverified
- relates_to::[[Allen (2023) Problems of Cryptographic Agility]]
- Progressive trust’s verification phases depend on cryptographic operations; constrained choice simplifies verification across the lifecycle
- relates_to::[[Allen (2024) Building Trust in Gradients]]
- The blog post operationalizes the lifecycle phases described in this developer reference; together they form a concept-specification pair
- relates_to::[[Allen (2025) Fair Witnessing in a Decentralized World]]
- Fair witnessing provides the disclosure format that progressive trust requires; progressive trust describes the dynamics, fair witnessing provides the data structure
- relates_to::[[Allen (2025) How My Values Inform Design]]
- Progressive Trust is developed as a values-to-design example in the appendix of the values article
- relates_to::[[Allen (2025) Interop What Is It Good For]]
- Progressive trust operates across system boundaries; interoperability enables the trust-building interactions that progressive trust describes.