ZNS integration — name resolution for CipherScan

[craftsoldier]

Greetings from the ZcashMe team!

This PR adds Zcash Name Service (ZNS) support to CipherScan — search for registered ZNS names and view a detail page with resolved address, registration transaction, marketplace status, and event history.

SDK

We published zcashname-sdk to npm — a zero-dependency TypeScript SDK for the ZNS JSON-RPC API. This PR uses it for all ZNS interactions (name resolution, status, events, validation, pricing).

Indexer

The testnet ZNS indexer is live at https://light.zcash.me/zns (HTTPS + CORS). CipherScan defaults to this URL on testnet. Mainnet is disabled until a mainnet indexer is deployed.

To override, set NEXT_PUBLIC_ZNS_URL in your env.

Changes

• /name/[name] detail page — resolved address, registration details (tx, block, nonce), marketplace listing, and event history for registered names. Invalid and unregistered names return 404.
• Search bar — ZNS name resolution as lowest priority after address, block, tx, hex, and label lookups. Disabled on mainnet.
• lib/zns.ts — ZNS client singleton with network guard.

Testing

Search "jameswallet" on testnet to see it in action.

[netlify]

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[craftsoldier]

Greetings from the ZcashMe team — pushed some architecture changes to this PR, heads up before you merge:

The browser no longer calls the indexer directly. The old approach had the SDK running client-side in a useEffect, which caused CORS failures and broke the pattern every other data source in CipherScan follows. Fixed it.

What changed:

• New API routes: GET /api/name/:name and GET /api/name/:name/events — names are a first-class resource now, same as blocks and txs
• lib/zns.ts is server-only — the SDK client lives behind the API, browser never touches the indexer
• NEXT_PUBLIC_ZNS_URL is gone — replaced with ZNS_MAINNET_URL and ZNS_TESTNET_URL (server-only, optional overrides)
• isZnsEnabled() is gone — mainnet indexer is live at light.zcash.me/zns-mainnet-test, ZNS works on all networks now
• API docs updated with the new Names category

To test: curl localhost:3000/api/name/zechariah or search "zechariah" in the search bar on testnet.

The indexer URLs, env vars, and API shape are all documented in ZNS_INTEGRATION.md.

[craftsoldier]

Note: the mainnet indexer URL (light.zcash.me/zns-mainnet-test) is a test instance. We'll swap it out for the production indexer URL before mainnet release — just a config change in lib/zns.ts or via the ZNS_MAINNET_URL env var, no code changes needed.