{"service":"Self-Radiance x402 License Gateway","issuer":"https://selfradiance.github.io","model":"content-public/license-paid","description":"All specifications are freely downloadable at their specUrl. Paying the x402 price at licenseUrl returns a signed Ed25519 license receipt binding your payment to the asset's SHA-256 fingerprint. Stripe checkout remains available for human buyers via manifest.json purchaseUrl fields.","payment":{"rail":"x402","x402Version":2,"scheme":"exact","network":"eip155:8453","currency":"USDC","payTo":"0x155463b78af48b2db07583c266b18e35bee4eed7"},"verification":{"algorithm":"Ed25519","verification_key":"LLU9AQt4chCkV6/TBAUxeUSc4nbkN5pBKrZ9V7MYedQ=","verification_key_source":"https://selfradiance.github.io/.well-known/issuer-key.json","instruction":"Verify receipt signatures over the canonical (recursively key-sorted) JSON of the receipt object. Never trust inline keys; fetch the key from 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