Whitepaper
Shikibu World Whitepaper
Last updated: April 2026
This is a reference English summary. The Japanese version is the authoritative text.
Project Overview
Total Supply
10,000
Network
Ethereum
Standard
ERC-721
Launched
2022.12
Shikibu World (commonly known as SKB) is a generative NFT collection issued by BUSON STUDIO, featuring the character Shikibu-chan. Total supply is 10,000. NFT holders may engage in derivative-work commercial use in accordance with the guidelines, and the project aims to support business activities of individual operators and small-to-medium enterprises that build upon the character IP.
Tokenomics (Token Allocation)
All 10,000 NFTs are allocated across the following three categories.
Public Sale
General sale (issued in December 2022). Currently traded on the OpenSea secondary market.
8,000
80%
Foundation
Reserve held for long-term operations and community development.
1,500
15%
Ecosystem
Reserved for Character DAO events, project prizes, and collaboration initiatives.
500
5%
Ecosystem Allocation (500 NFTs)
The 500 NFTs in the Ecosystem allocation are intended to invigorate and grow the community, and are not expected to circulate directly on the market.
- Prizes for events and projects organized by the Character DAO
- Gifts to official collaboration partners
- Rewards for community contributors
- Marketing and alliance initiatives
These tokens are minted at release and held in operator multisig wallets in a distributed manner.
Foundation Allocation (1,500 NFTs)
The 1,500 NFTs in the Foundation allocation are reserved for long-term operations and execution of the future roadmap.
- Held as NFTs while SKB revenue remains stable (operating reserve)
- Marketed and listed as needed (at the operator's discretion)
- Reserved for large enterprise contracts arranged via BUSON STUDIO
- Capital for new projects and new IP rollouts
Foundation holdings are managed safely and in a distributed manner via operator multisig wallets.
Operator Holdings — Transparency
Operator wallet addresses and NFT holdings as of April 2026 are listed below. These can be independently verified on-chain via Etherscan at any time.
| Role | Wallet address | NFTs held | Note |
|---|---|---|---|
| Operator Wallet (multisig) | 0x0a8D214f…9d74B0 ↗ | 1,555 SKB | Primary operator holdings |
| Operator Wallet (multisig) | 0x60673e51…36fa13 ↗ | 344 SKB | Secondary operator holdings |
| Operator Wallet (multisig) | 0xee93e2D8…38428F ↗ | 8 SKB | Test and operational reserve |
| Royalty Receiver | 0xCEF8d925…74EC64 ↗ | 0 SKB | Receives Creator Earnings only (no NFTs held) |
| Total operator holdings | 1,907 SKB | ||
Security and Operations
Multisig wallets
Operator-held NFTs are distributed across multiple multisig wallets. Private keys are stored on Ledger hardware wallets, eliminating single points of failure.
Contract Allow List (CAL)
We operate at CAL Level 1, allowing transfers only via royalty-respecting marketplaces (the OpenSea Conduit). Trades on royalty-disregarding marketplaces such as Blur or LooksRare are blocked at the on-chain level.
Creator Earnings (royalty)
On secondary trades, 10% is automatically sent as OpenSea Creator Earnings to the
operator wallet (0xCEF8…EC64). This revenue funds ongoing project operations
(site operations, content production, community management).
Smart contract immutability
The NFT issuance smart contract does not use a proxy pattern; once deployed, the contract cannot be upgraded. This minimizes contract-level risk.
On-chain Information
- Token name
- ShikibuWorld (SKB)
- CAL Level
- Level 1 (OpenSea Conduit only)
- Metadata
- AWS S3 (ap-northeast-1) ↗