The field guide
Four classes. Three thousand folios.
The collection contains 750 Witness insects, 750 Oracle eye instruments, 750 Threshold passages and 750 Reliquary rooted keys. These are original procedural variations within four approved visual families, not 3,000 independently hand-drawn compositions.
Variation changes geometry, anatomy, counts, proportions, branches and arrangement. SHA-256 checks cover the complete SVG and the artwork-only foreground without folio labels or the shared frame. Zero exact duplicates does not mean zero visual similarity: related family members deliberately resemble one another. Trait combinations may repeat while geometry differs. This is not a perceptual uniqueness guarantee.
Explore the complete searchable catalogue, open a folio, and download its actual SVG or inspect its JSON metadata. The collection manifest contains the SHA-256 for every canonical artwork.
The personal reading
Connect an Ethereum-compatible wallet and sign a plain-language, domain-bound entry message. It requests no transaction, gas, token approval or payment. The server verifies control of the wallet address; a typed address alone is insufficient.
Each address receives a deterministic HMAC-derived three-stage reading: a shifted alphabet, a shuffled coordinate instrument, and a root-order ledger. These are original puzzles inspired by the atmosphere of internet mysteries, not copies of Cicada 3301 puzzles. We have no affiliation with Cicada 3301.
Different wallets receive different derived parameters with overwhelming likelihood, not a mathematical guarantee of unique answers for every possible address. The puzzle methods are shared. Hints are deliberately available and determined readers or software can solve the clues; this is not an anti-bot or proof-of-humanity system. Answer keys and the derivation secret are held on the server, never sent as client answer data.
Security and privacy
Entry nonces expire after five minutes and are single-use. Sessions expire after thirty minutes. Challenge proofs bind the wallet, session, stage, nonce and expiry. Successful submissions advance atomically and cannot be replayed. There are wallet and IP request limits, including twelve answer attempts per fifteen minutes.
Wallet addresses, entry messages, sessions, rate-limit identifiers and completion timestamps are stored in the service database. The hosting provider processes network information. Session tokens stay in page memory, not local storage. Disconnect revokes the current session. Changing wallet disconnects the reading. Chain switching for mint does not change wallet eligibility. Never enter a seed phrase or private key.
Recording on chain
CICADA is an ERC-721 collection on Robinhood Chain (chain ID 4663). The price is 0.0002 ETH per NFT, plus gas. Supply is capped at 3,000 and each wallet may mint at most two over its lifetime; transferring tokens never resets this limit. This is a mainnet deployment using real ETH.
Contract: 0x826bf4e167dA3ED190fB7Fc6e1b9972F36629a20. The vault reads mint-open state directly from the chain. Solving all three readings records eligibility, not a reservation. A short-lived EIP-712 permit binds your wallet, quantity, nonce, expiry, chain and contract. Only the wallet completing the reading can use it. Exact payment is required.
There is no administrative ungated mint. The owner can pause or resume minting and rotate the permit signer. Only the fixed treasury 0x0F5C908749Ea5a0A674fB17D5a84247ffCd4c8d1 can withdraw proceeds, to itself. The contract has no royalty mechanism. Source is exact-match verified on Sourcify (creation and runtime). Official Blockscout verification is unconfirmed because its API is blocked by a Cloudflare challenge. Local security tests are not an independent audit.
Token IDs are assigned sequentially from 1 to 3000. Existing canonical artwork and metadata are visible before mint: there is no hidden reveal or on-chain art storage. Metadata URLs are fixed to https://vesper-archive.pages.dev/metadata/{id}.json, but this hosting remains operator-controlled and availability is not guaranteed forever. Confirmed mint receipts identify your tokens and show their artwork.