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depin-building-physical-infra-on-chain
Blog

Why Selective Disclosure Is the Key to DePIN Interoperability

DePINs are hitting a wall: to interoperate, they demand full data access, creating privacy and security risks. The solution is selective disclosure—sharing only the specific, cryptographically proven data point needed for a transaction. This is the missing primitive for scalable, trust-minimized physical infrastructure.

introduction
THE INTEROPERABILITY BOTTLENECK

Introduction

DePIN's growth is throttled by the data silos created by full-chain replication, making selective disclosure the necessary architectural shift.

Full-chain replication fails for DePIN. Projects like Helium and Hivemapper currently push all sensor data to a single chain, creating isolated data silos that prevent cross-protocol composability and efficient verification.

Selective disclosure is the fix. Instead of broadcasting all data, DePIN nodes will cryptographically prove specific attributes (e.g., 'sensor reading > X') to any requesting chain, enabling trust-minimized, on-demand data consumption. This mirrors the intent-based design of UniswapX.

The cost asymmetry is decisive. Posting 1MB of raw LIDAR data to Ethereum costs ~$200; a ZK proof of a relevant fact from that data costs ~$0.01. This 20,000x efficiency gain is the economic imperative for the shift.

Evidence: The transition is already starting. Projects like Espresso Systems are building shared sequencers with data availability layers, while zkOracle designs from RISC Zero demonstrate the proof mechanics for selective state access.

deep-dive
THE DATA PRIVACY ENGINE

Selective Disclosure: The First-Principles Fix

Selective disclosure is the cryptographic mechanism that enables DePIN protocols to share only the minimum necessary data for interoperability, solving the trust vs. transparency paradox.

DePIN's core dilemma is data. Protocols like Helium and Hivemapper generate sensitive operational data that is essential for cross-chain composability but must remain private. Full transparency destroys competitive advantage and user privacy.

Selective disclosure is the cryptographic fix. It allows a DePIN node to prove a specific claim (e.g., 'I have X uptime') without revealing the underlying raw data. This uses zero-knowledge proofs (ZKPs) or verifiable credentials to create trust-minimized interoperability.

This enables permissionless, trustless bridges. Instead of relying on a centralized oracle or a multisig bridge like Multichain, a DePIN can use a ZK-verifier contract on EigenLayer or Hyperlane to attest to provable, private states. The bridge only sees the proof.

The counter-intuitive insight is that less data creates more trust. Public blockchains demand transparency, but business logic requires opacity. Selective disclosure aligns these by making the proof of compliance public while keeping the competitive data private.

Evidence: Projects like Space and Time use ZK-proofs to allow smart contracts to query off-chain data privately. This model is the blueprint for DePINs to interoperate without leaking their moat to competitors or centralized intermediaries.

DECENTRALIZED PHYSICAL INFRASTRUCTURE NETWORKS

Interoperability Models: Full Access vs. Selective Disclosure

A comparison of data-sharing paradigms for cross-chain and cross-protocol DePIN composability.

Core Feature / MetricFull Access (Legacy Model)Selective Disclosure (Intent-Based)Verifiable Credentials (ZK-Based)

Data Exposure

Entire dataset / raw API key

Specific, consented data points

Cryptographic proof of claim only

Trust Assumption

Trust the bridge/relayer (e.g., LayerZero)

Trust minimized via solvers (e.g., UniswapX, CowSwap)

Trustless via cryptographic verification

Composability Surface

Unlimited, but risky

Intent-specific and bounded

Proof-specific and portable

Typical Latency

< 2 seconds

2-30 seconds (solver competition)

< 5 seconds (proof generation)

Fee Model

Fixed gas + relayer fee

Solver competition (often negative)

Prover cost + network fee

Example Protocols

Axelar, Celer, generic message bridges

Across, UniswapX, CowSwap, Anoma

Polygon ID, Sismo, zkPass

Privacy Guarantee

None

Data minimization

Zero-Knowledge (selective disclosure)

Integration Complexity

Low (simple API call)

Medium (intent standard & solver integration)

High (circuit design & proof verification)

protocol-spotlight
DEPIN INTEROPERABILITY

Builders on the Frontier

DePIN's trillion-dollar promise is locked in data silos. Selective disclosure is the master key.

01

The Problem: Data Silos Kill Composability

Today's DePINs are walled gardens. A Helium hotspot's location data is useless to a Hivemapper driver, forcing redundant infrastructure and killing network effects.

  • Zero Interoperability: Data is trapped in proprietary formats and access layers.
  • Fragmented Liquidity: Staking, rewards, and asset value cannot flow between networks.
  • Stunted Innovation: Developers cannot build cross-DPIN applications, limiting total addressable market.
~90%
Data Unused
10x
Dev Friction
02

The Solution: Zero-Knowledge Proofs for Provenance

Selective disclosure via ZKPs allows a DePIN to prove a data attribute is true without revealing the raw data itself. This is the foundation for trust-minimized interoperability.

  • Prove, Don't Share: A DIMO vehicle can prove it drove 1000km for a reward contract without leaking GPS logs.
  • Universal Verifiability: Any chain or contract (Ethereum, Solana, Cosmos) can verify the proof, enabling cross-chain DePIN states.
  • Privacy-Preserving: User and operator data remains confidential, complying with regulations like GDPR.
~100ms
Proof Verify
Trustless
Guarantee
03

The Architecture: Intent-Centric Data Markets

Interoperability requires a new primitive: a marketplace for verified data claims. Think UniswapX for physical world data.

  • Standardized Schemas: Frameworks like IBC or LayerZero's OFT, but for ZK-verified data packets.
  • Solver Networks: Entities compete to fulfill data requests (e.g., "prove air quality > X") most efficiently.
  • Monetization Layer: Data providers earn fees for proofs, not raw data, aligning incentives with privacy.
New Market
Primitive
-70%
Integration Cost
04

The Builders: Risc Zero, =nil;, Espresso

Infrastructure teams are laying the ZK plumbing for this future. They are not competitors but complementary layers.

  • Risc Zero: General-purpose ZKVM for proving arbitrary compute on device data.
  • =nil;: zkLLVM compiles existing code (C++, Rust) into ZK-provers, ideal for legacy DePIN firmware.
  • Espresso: Provides decentralized sequencing and shared zk-rollup infrastructure for DePIN state coordination.
10-100x
Prover Speedup
Multi-Chain
By Default
counter-argument
THE INTEROPERABILITY TRAP

The Skeptic's View: Over-Engineering a Simple Problem?

DePIN's obsession with universal interoperability standards ignores the simpler, proven solution of selective data disclosure.

Universal standards are a trap. Protocols like W3C Verifiable Credentials or IBC aim for perfect, lossless data portability, which creates brittle, over-engineered systems. DePIN's value is in specific, verifiable claims, not raw data dumps.

Selective disclosure solves the 80%. Projects like Helium and Hivemapper need to prove specific metrics to partners, not share entire datasets. A zk-SNARK proof of sensor uptime or geographic coverage is sufficient and private.

The precedent is in DeFi. UniswapX and CowSwap use intents and solvers for optimal execution, not a universal AMM standard. DePIN needs a similar intent-based bridge layer for data, not a monolithic ledger.

Evidence: The IOTA Tangle and Streamr attempted universal data marketplaces with limited adoption. The successful model is Chainlink Functions, which executes specific, verifiable computations on demand for smart contracts.

takeaways
DEPIN INTEROPERABILITY

Key Takeaways for Builders and Investors

The future of DePIN is multi-chain, but data privacy is non-negotiable. Selective disclosure is the cryptographic primitive that unlocks both.

01

The Problem: Data Silos Kill Composability

DePINs like Helium and Render operate in isolated data vaults. This prevents cross-chain asset creation (e.g., a Render GPU-hour NFT on Ethereum) and stifles DeFi integrations.

  • Fragmented Liquidity: Asset value is trapped in its native chain.
  • No Cross-Chain Proofs: A sensor's verifiable data stream cannot be trustlessly used elsewhere.
$20B+
Trapped Value
0
Native Composability
02

The Solution: Zero-Knowledge Attestations (ZKAs)

Prove a property of your private data without revealing the data itself. This is the core of selective disclosure, enabling permissioned interoperability.

  • Portable Reputation: A driver's Hivemapper trust score can be verified on any chain for a loan.
  • Conditional Logic: Share sensor data only if a smart contract condition (e.g., oracle price) is met.
~2s
Proof Gen
100%
Data Privacy
03

The Architecture: Intent-Based Relays with Proofs

Move beyond dumb bridges. The new stack uses intent-based architectures (like UniswapX and Across) relayed with ZK proofs of state.

  • User Specifies 'What': "Swap my Helium IOT tokens for SOL, best price, within 1% slippage."
  • Solver Proves 'How': A solver provides a ZK proof of valid DePIN state to fulfill the intent.
-70%
Bridge Risk
10x
Solver Competition
04

The Business Model: Data Markets, Not Just Tokens

Selective disclosure turns raw DePIN data streams into tradable, composable assets. This enables verifiable data markets beyond simple token transfers.

  • Monetize Proofs: Sell ZK proofs of specific data conditions (e.g., "network uptime >99%") to insurers.
  • Layer-2 Scaling: Batch thousands of attestations on a zkRollup like Scroll or zkSync for ~$0.01 per proof.
1000x
Data Utility
$0.01
Avg. Proof Cost
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Why Selective Disclosure Is Key to DePIN Interoperability | ChainScore Blog