Night Pass Show How Private EU Battery Passport Verification fit work for Midnight

One open-source prototype wey dem present during the Midnight Fireside Dev Hang don show how manufacturers fit create EU battery passports, take anchor their integrity for Midnight and verify selected compliance claims without to expose sensitive production data.

Night Pass develop with support from the Midnight Build Club and e dey operate as demonstrator for Midnight Preview. The project combine one enterprise-facing application with zero-knowledge proofs wey cover data like carbon footprint, recycled-material content and chemical thresholds.

The prototype land before the European Union battery passport requirements go start. From February 18, 2027, every electric-vehicle battery, light-means-of-transport battery and industrial battery wey get capacity above 2 kWh wey dem put for EU market must get electronic battery passport. EU rules still require different access rights for consumers, recyclers, authorities and other authorized participants.

Night Pass Dey Anchor Battery Passport Integrity for Midnight

Night Pass dey create digital record for individual battery while e separate public information from commercially sensitive data.

The application dey store the complete passport off-chain. Na only public metadata and cryptographic commitments, including one payload hash and one Merkle root wey cover selected fields, dem dey anchor for Midnight. Any later change to the underlying document go produce different cryptographic result and go break im connection with the record wey dem don already submit to the network.

The project dey use Nightgate as im Midnight infrastructure layer. Nightgate dey provide the Compact contract, zero-knowledge proof components and one worker wey dey handle asynchronous transaction submission from the enterprise application.

During the presentation, the producer interface help create one battery passport, submit im cryptographic commitments and generate proofs wey connect to individual data fields. The public repository document one completed Preview example wey show say one passport bin don anchor before dem add three separate predicate proofs for carbon footprint, recycled content and lead concentration.

Users no need to interact directly with command-line blockchain tools. Transactions fit submit through server-managed wallet or the user fit sign am through compatible wallet connection.

Zero-Knowledge Proofs Separate Verification From Disclosure

Battery passports suppose improve traceability across manufacturing, use, reuse and recycling. The same records fit still contain supplier identities, chemical composition, sustainability metrics and other information wey manufacturers no go want make public.

Night Pass dey use field-bound zero-knowledge predicates to address that kain conflict. Producer fit prove say one value dey above or below required threshold without to reveal the number wey dem use generate the proof.

Manufacturer fit therefore verify say battery carbon footprint remain below accepted limit while dem keep the precise measurement private. The proof tie to the passport anchored content root, so e no go allow valid value from one battery record to reuse for another one.

The application still apply separate disclosure levels. Public users fit access general product information, recyclers fit receive additional technical data, and authorities fit get broader view wey include restricted fields like supplier identities. The European regulation self require make access dey controlled according to each participant role while e protect commercially sensitive information.

For Midnight $NIGHT ecosystem, the design provide more specific use of programmable privacy pass simply to hide entire transaction. The application dey reveal the information wey each participant need while e still allow other claims to verify without disclosure.

SAP Architecture Dey Connect Midnight With Enterprise Workflows

Night Pass build with the SAP Cloud Application Programming Model, framework for developing enterprise-grade cloud applications. SAP CAP support structured data models, service layers and interfaces like OData, wey allow applications to exchange information with existing business software.

The use of SAP CAP no mean say dem don announce partnership with SAP or confirm commercial deployment. Night Pass na independent prototype wey dey use SAP development framework to demonstrate how Midnight functionality fit sit behind conventional enterprise interface.

The application include separate producer, consumer and explorer views. Producers fit create and attest passports, authorized participants fit receive the appropriate disclosure tier, and public proofs fit dey inspected through explorer-style interface.

According to the project repository, the producer cockpit fit also export battery data inside Catena-X-compatible JSON structure. The export include Predicate Attestation Credential wey record which claim dem prove while e mark the underlying value as undisclosed.

That machine-readable output get meaning because battery passport data must move between manufacturers, suppliers, software platforms, recyclers and regulators, no be to remain inside single blockchain application.

Night Pass still be prototype. Production deployment go require audited contracts, secure identity controls, reliable connections to manufacturer databases and validation against the final technical requirements wey regulators and industry platforms go use.

The completed demonstrator still give the $NIGHT ecosystem operational enterprise workflow: producer fit create battery passport, anchor im integrity for Midnight, generate field-level compliance proof and export record for another business system without to publish the confidential value behind the claim.