temp req - closing

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What

Adds metadata and icons for two Coinbase-wrapped ERC-20 assets on Base (eip155:8453). Neither address had an entry in this repo, so MetaMask currently shows them without a name/symbol/icon and would fall back to 18 decimals for cbZEC (the contract uses 8).

Tokens

Address (EIP-55)	Name	Symbol	Decimals	erc20	Icon	Icon source	Metadata sources
0xB2000000000000000000008501b13360000cb2EC	Coinbase Wrapped ZEC	cbZEC	8	true	icons/eip155:8453/erc20:0xB2000000000000000000008501b13360000cb2EC.svg	Official issuer artwork supplied to MetaMask (no public URL published yet)	On-chain eth_call via base-rpc.publicnode.com and mainnet.base.org; Blockscout token page; Basescan
0xB200000000000000000000451d033a5000cb479e	Coinbase Wrapped Hyperliquid	cbHYPE	18	true	icons/eip155:8453/erc20:0xB200000000000000000000451d033a5000cb479e.svg	Official issuer artwork supplied to MetaMask (no public URL published yet)	On-chain eth_call via base-rpc.publicnode.com and mainnet.base.org; Blockscout token page; Basescan

CAIP-19 asset IDs:

• eip155:8453/erc20:0xB2000000000000000000008501b13360000cb2EC
• eip155:8453/erc20:0xB200000000000000000000451d033a5000cb479e

No overrides. name, symbol and decimals are taken verbatim from the contracts. The naming matches the existing convention for this family in the repo, e.g. Coinbase Wrapped MEGA / cbMEGA (metadata/eip155:8453/erc20:0xcb111E6A2a3bde90856D299d61341ac302167D23.json).

Verification

name(), symbol() and decimals() were read directly from Base via eth_call against two independent public RPC providers (base-rpc.publicnode.com and mainnet.base.org). Both return identical results:

• 0xB2000000000000000000008501b13360000cb2EC -> Coinbase Wrapped ZEC, cbZEC, 8
• 0xB200000000000000000000451d033a5000cb479e -> Coinbase Wrapped Hyperliquid, cbHYPE, 18

Cross-checked against Blockscout, which independently reports the same name/symbol/decimals, type: ERC-20, is_contract: true, is_scam: false and reputation: ok for both addresses. totalSupply() returns non-zero for both. Both addresses are already EIP-55 checksummed as written above (confirmed with ethereumjs-util.toChecksumAddress).

The same two addresses return empty code on Ethereum mainnet, so these entries are Base-only and no other chains are added.

Reviewer caveats worth a second pair of eyes:

• Both contracts are very recently deployed, so holder counts are still in the low single digits and source is not yet verified on the explorer.
• Because they are new, there is no CoinGecko/CoinMarketCap listing yet to use as a third source; verification above rests on direct on-chain reads plus Blockscout.

Icons

The icons are the official marks for these two assets as supplied by the issuer. They arrived as 320x320 RGBA PNGs (a blue #0052FF ring and glyph on a white disc with transparent corners), which conflicts with STYLEGUIDE.md in two ways: a circular background with transparent corners, and artwork running edge to edge with no safe-area padding.

So each mark was converted to a vector and re-laid out rather than committed as-is:

• The blue artwork was traced to Bezier paths and rendered against a solid white square filling a 400x400 artboard, so the circular UI crop has a real background instead of transparent corners.
• The mark sits inside the 80% safe area with 10% padding on all sides, centered.
• Colors are unchanged (#0052FF on white), so both icons stay legible in light and dark mode; checked by rendering at 16, 24, 32 and 48px on both backgrounds.
• Pure <rect> + <path> geometry, no embedded rasters, <filter>, <style> blocks or nested SVGs. ~5KB and ~4KB.

Checks

• npm run asset:set used to create the files, then npm run asset:verify for both assets — passes
• npm test — 702/702 passing
• Only icons/ and metadata/ are touched; contract-map.json is generated separately, matching recent asset PRs