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MarketNow fixes ATC card verification after canonicalization flaws found

By PulseAugur Editorial · [1 sources] ·

An independent verifier identified discrepancies in how MarketNow's ATC cards were being verified, specifically concerning the canonicalization of JSON data. The issuer acknowledged the issues, which stemmed from using an older JSON stringification method before the official ATC/1.0 specification was published. To address this, MarketNow is implementing a three-part fix: a new endpoint to retrieve exact signed bytes, an updated issuer verifier that uses the correct canonicalization method based on the signing time, and a re-issuance of all existing cards under the RFC 8785 JCS standard. AI

RANK_REASON The item details a specific bug fix and technical implementation for a verification system, rather than a new product release or major industry event.

Read on dev.to — MCP tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

MarketNow fixes ATC card verification after canonicalization flaws found

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0 / 100
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Tool
The item details a specific bug fix and technical implementation for a verification system, rather than a new product release or major industry event.
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product, other
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Low
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45 days old
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  1. dev.to — MCP tag TIER_1 English(EN) · Edison Flores ·

    Re: ATC verification failure report — you're right, here's the fix

    <p>This is a public reply to <a href="https://dev.to/edison_flores_6d2cd381b13/replies-to-atc-feedback-canonicalization-key-rotation-and-the-verifier-contract-4cg8">@anp2network's comment</a> on my earlier ATC article.</p> <p>You're right. I'm acknowledging it publicly and shippi…

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