L7 Chain smart contracts — public specification

Paper: L7-SC
Version: 2026.08.22-10
Effective: August 22, 2026
Pages: 9 (print)

The public shape of L7 contracts: one root, isolated L2 micros, lanes, moves, and what a seal contains. No keys. No chat. No source.

Public. Not a securities prospectus. Not legal advice.

L7-SC · 1. Scope

1. Scope

This is product legal copy for Wrooms and L7 Chain. It is not legal advice, not a securities prospectus, and not a registration statement. Wrooms is the Service and the contracting party. The Wrooms App is hosted at wrooms.ai. Wrooms AI is the house desks inside the Wrooms App. L7 Chain (also L7) is the public settlement ledger of the Service, readable at l7c.ai. Its purpose is to seal economic events — buys, sends, swaps, issues, wraps, and pieces — so a later record cannot quietly replace an earlier one. L7C is the layer-one coin of L7 Chain. WRO is the native layer-two token of Wrooms, isolated on L7 Chain. The Wrooms User Agreement remains the binding terms of use. The Token Sale Agreement is the binding purchase terms for L7C and WRO sold on the Wrooms book.

This document describes the public contract model of L7 Chain. It is for users, auditors, and builders reading the book. It is not source code, not an SDK dump, and not a license to copy the chain. L7 Chain, the L7 mark, the explorer, and the seal format are proprietary to Wrooms. User Agreement §7 and §11 apply.

L7 is not a permissionless public chain for third-party virtual machines. Shared features use the same root contract. Each token and piece keeps its engagement inside its own micro contract.

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L7-SC · 2. Public identifiers

2. Public identifiers

Every contract id on L7 is 43 characters, starts with l7t, and is unique. Plates that receive value start with l7w. These ids are public. They are not private keys.

Name	Id	Role
L7 root (L7C, L1)	l7t33ed01317832c3d15e0710ee045b184968f2f7be	Layer-one coin and parent of every L2
WRO (L2)	l7tf1c90b88e95ea91554e1a22a46f423a673a0d171	Native Wrooms token, isolated L2
Trade	l7t6242e1ca306bb1b4c3fd9d1119853006937dd220	Shared trade lane
Mint	l7tec822dcb1b3b30fb3452c44504abb154a78d67e4	Shared mint lane
Own	l7tae347bca3a7a11890ef9b76e1946c27d4896dd4e	Pieces — one collection under the root
Book plate	l7w125f6441651fd47dd86249b42e5d56ea28695d82	Liquidity for sale

Rails and spans have their own public ids on the book. A wrap of Bitcoin (or any buyable rail, including USDC, USDT, and DAI) is that asset on L7, sealed under HLP-2 to the live field — L7C plus every rail spine plus the aggregated host bind of each stable. It is not Bitcoin on Bitcoin.

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L7-SC · 3. Hierarchy

3. Hierarchy

L1 — L7C and buyable rails (USD, USDC, USDT, DAI, BTC, ETH, SOL, BNB, TRX, HYPE, AVAX, SUI, APT, ADA, TON, XRP, DOGE, POL). Base, Arbitrum, Optimism, and Robinhood Chain are Ethereum L2 spines under ETH, not coins you buy.
L2 — WRO and every user-created token. Isolated. Parent is the L7 root.
Own — pieces (NFT, title, lot condensed). Listed under the root. Engagement stays in the micro.
Span — a foreign chain address bound to L7. Issue, own, and dApp registration still settle on L7.

A move on one L2 never shares a book with another L2. L2 checks back to L1. That is the isolation rule.

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L7-SC · 4. Lanes, moves, and abilities

4. Lanes, moves, and abilities

Lane	Move	What it does
Trade	buy / sell	Fill against the book in Pay dollars
Trade	send	Plate to plate on L7
Trade	swap	Convert through an L7C pool
Trade	stake / unstake	Lock or free L7C
Mint	issue	Genesis of L7C or WRO, or a new token
Mint	redeem	Burn or redeem where the contract allows
Own	seal	Name a piece. One owner at a time

Public abilities on a sealed contract: hold, send, trade, convert, stake L7C, issue a unique token (when permitted), wrap and unwrap a rail to a live block, bind a span, and seal a piece. Fractions to four decimal places. Book buys start at $1.

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L7-SC · 5. What a seal contains

5. What a seal contains

A seal is one hash-linked line. Public fields on the book: height, hash, previous hash, lane, move, from, to, asset, amount, layer, contract, time, and (for a wrap) the Hash-Linked Protocol digest, Short HLP (H1S), and the live heights of every rail spine at that instant, including USDC, USDT, and DAI. HLP is a valid transaction that happened over the internet. Idempotent: a reused or failed proof does not mint twice, pay twice, or rewrite a height.

A seal never contains a seed phrase, private key, card number, Social Security number, password, or chat. If you see those on a page that claims to be L7, it is not the book.

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L7-SC · 6. Creating a token

6. Creating a token

Name: 2–32 characters, letters and numbers.
Symbol: up to 7 characters, unique. L7C, WRO, USD, USDC, and rail tickers are reserved.
Supply: whole number, maximum 100,000,000,000. Total equals circulating.
Contract: unique. No two tokens share a contract or a symbol.
Layer: always L2, parent the L7 root.
User-created tokens are not L7C or WRO and are not sold under the Token Sale Agreement.

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L7-SC · 7. How to verify

7. How to verify

Open the public book at l7c.ai.
Search a hash, plate (l7w…), asset, or contract (l7t…).
Confirm layer: L7C is 1. WRO and issued tokens are 2.
Confirm the fill matches your in-app receipt. Pay and L7 link to the same seal.
Do not paste a private key into the book. The book cannot show one.

Related: Token Sale Agreement /sale · Whitepaper /whitepaper · Tokenomics /tokenomics · HLP /hlp · Audit /audit · User Agreement /agreement §7 · hello@wrooms.ai.

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