Add ERC: Compressed Display Format for Addresses #1438
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Introduces a presentation layer standard for abbreviating consecutive
identical hex characters in EVM addresses using run-length encoding.
- Unicode mode for UI (superscript notation: 0¹⁸)
- ASCII fallback for CLI/logs (bracket notation: 0{18})
- Preserves EIP-55 checksum compatibility
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The commit c26323b (as a parent of 9216fb0) contains errors. |
2kxj2q6n7d-pixel
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Dec 30, 2025
2kxj2q6n7d-pixel
approved these changes
Dec 30, 2025
abcoathup
reviewed
Dec 30, 2025
abcoathup
reviewed
Dec 30, 2025
abcoathup
reviewed
Dec 30, 2025
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Author
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Thanks, @abcoathup |
Co-authored-by: Andrew B Coathup <[email protected]>
Co-authored-by: Andrew B Coathup <[email protected]>
Co-authored-by: Andrew B Coathup <[email protected]>
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Summary
This PR introduces a new ERC proposing a presentation layer standard for abbreviating consecutive identical hex characters in EVM addresses using run-length encoding.
Motivation
As vanity addresses (CREATE2) and gas optimization proposals like EIP-7939 become more common, addresses with long sequences of identical characters (especially zeros) are increasingly prevalent. This creates:
0x1234...5678) obscures the internal structureSpecification
Two display modes:
0x0¹⁸44...- Uses superscript characters0x0{18}44...- Uses bracket notationCompression triggers when a sequence has length ≥ 6.
Key Features
{}, superscripts) cause rejection in legacy systemsChecklist
eipw,markdownlint,codespell)