Web Technologies•September 30, 2026
IETF Publishes JSON Schema Draft 2026 with Native Arbitrary-Precision BigInt
The new JSON Schema specification standardizes arbitrary-precision integer keywords and ECMAScript v-flag regular expression patterns for enterprise data contracts.
Official Press Release
JSON SchemaIETFData ValidationBigIntAPI Design
The Internet Engineering Task Force (IETF) JSON Schema Working Group has released Draft 2026, officially introducing the format: "bigint" keyword and strict 64-bit unsigned integer assertions.
The update solves long-standing IEEE-754 precision truncation issues that have plagued financial ledgers and blockchain applications exchanging large integer timestamps and currency amounts in JSON format.
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