> For the complete documentation index, see [llms.txt](https://docs.zecblocks.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zecblocks.xyz/faq.md).

# FAQ

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<summary>Is ZB-1 a native Zcash NFT standard?</summary>

No. ZB-1 is an application-layer protocol whose events are recorded through Zcash transactions. Zcash consensus does not interpret ZB-1 NFT semantics.

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<summary>Is ZB-1 mining the same as ZEC mining?</summary>

No. ZB-1 uses a separate SHA-256 proof-of-work challenge for claiming collectibles.

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<summary>How many ZEC BLOCKS exist?</summary>

Maximum supply is **5,000**.

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<summary>How difficult is mining?</summary>

ZB-1 v1 requires **26 leading zero bits** in the SHA-256 proof hash.

The expected search space is approximately 67.1 million hashes per valid proof, although individual attempts are probabilistic.

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<summary>Are the first 500 claims free?</summary>

The first **500 canonical valid claims** have **zero ZB-1 protocol claim fee**. Users may still pay ordinary Zcash network transaction fees.

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<summary>What happens after claim #500?</summary>

Canonical valid claims #501–#5,000 require a protocol claim fee of **0.0013 ZEC**.

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<summary>Can a mined ZEC BLOCK be sold?</summary>

Yes, once the public v1 ownership and marketplace implementation is active. Official ZB-1 BUY events require the 3% marketplace protocol fee.

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<summary>Is the 3% fee unavoidable?</summary>

It is required for an event to be accepted as a valid ZB-1 marketplace BUY. Zcash itself cannot prevent parties from arranging a direct transfer and separate payment outside the ZB-1 marketplace.

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<summary>Is the artwork stored as PNG files?</summary>

The primary artwork is intended to be generated deterministically using `BITMAP_V1` from public source data.

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<summary>Does ZB-1 require the ZEC BLOCKS website forever?</summary>

The protocol design goal is no. The website is an interface. Canonical protocol state should remain independently reconstructible from the published rules and chain data.

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