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LABS
Glossary

License Framework

A standardized set of terms and smart contract interfaces that define the permissions and restrictions for using an NFT's associated intellectual property (IP).
Chainscore © 2026
definition
BLOCKCHAIN GLOSSARY

What is a License Framework?

A systematic structure of legal permissions and restrictions governing the use, modification, and distribution of software or digital assets.

A license framework is a structured set of legal terms that defines the permissions, conditions, and limitations for using, modifying, and distributing software code or digital assets. In the context of blockchain and Web3, these frameworks are critical for establishing the intellectual property rights associated with open-source software, smart contracts, and non-fungible tokens (NFTs). They provide the legal scaffolding that determines whether code can be forked, assets can be commercially remixed, or royalties must be paid on secondary sales, directly impacting developer adoption and project sustainability.

Prominent examples in the software domain include the GNU General Public License (GPL), which mandates that derivative works remain open-source, and the more permissive MIT License or Apache 2.0 License. For digital assets, specialized frameworks have emerged, such as Creative Commons licenses for media and the Can't Be Evil licenses pioneered for NFTs, which are designed to be machine-readable and enforceable on-chain. These frameworks address unique Web3 scenarios, clarifying rights around commercial use, attribution, and the handling of royalty payments.

Choosing a license framework is a foundational decision for any project. It influences developer collaboration by determining how easily code can be integrated into other projects, affects business models by defining revenue streams from licensing or royalties, and manages legal risk by explicitly granting or withholding rights. A well-chosen framework aligns with the project's goals, whether that is fostering maximum adoption through permissive terms or protecting core innovations through more restrictive, copyleft provisions that ensure contributions flow back to the community.

how-it-works
BLOCKCHAIN GOVERNANCE

How a License Framework Works

A license framework is a structured set of rules and permissions that governs the use, modification, and distribution of software or digital assets, particularly within decentralized ecosystems.

In the context of blockchain and open-source software, a license framework defines the legal and technical boundaries for developers and users. It specifies what actions are permitted—such as forking, modifying, or commercializing the code—and under what conditions. This is distinct from a single license; a framework provides a modular system, often offering a menu of license options like the Apache 2.0, MIT, or GPL, each with different requirements for attribution, patent grants, and copyleft provisions. The framework itself acts as the meta-structure for selecting and applying these licenses.

The core mechanism involves embedding license identifiers and metadata directly into the project's source code and documentation. For smart contracts and decentralized applications (dApps), this often means including standardized comments like SPDX-License-Identifier: MIT in the file headers. The framework ensures consistency and machine-readability, allowing automated tools to scan and verify compliance. This is critical for composability in DeFi, where integrating unauthorized or incompatible code can create legal and security risks for dependent projects.

A practical example is the Business Source License (BSL) framework, which offers a time-delayed open-source model. A project might be released under BSL 1.1, prohibiting production use without a commercial agreement for a set period (e.g., four years), after which it automatically converts to a standard open-source license like GPL. This framework balances protection for developers with eventual community access. Other frameworks, like Creative Commons for non-code assets, provide similar modular choices for rights like sharing and adaptation.

Implementing a license framework requires careful mapping of business goals to license attributes. Key considerations include: - Network effects vs. control: Permissive licenses (MIT) maximize adoption, while strong copyleft (GPL) ensures derivatives remain open. - Patent protection: Licenses like Apache 2.0 include an express patent grant from contributors. - Upgradeability: Some frameworks allow for license changes via decentralized autonomous organization (DAO) governance votes, enabling ecosystems to evolve their terms. The chosen framework becomes a foundational element of a project's governance and growth strategy.

key-features
BLOCKCHAIN LICENSING

Key Features of a License Framework

A blockchain license framework is a set of on-chain rules and smart contracts that define the rights, obligations, and economic terms for using a protocol's intellectual property or core technology.

01

Permissioned Access

Defines who can use the licensed technology and under what conditions. This is enforced via allowlists, token-gating, or whitelisted smart contracts. It prevents unauthorized forks or commercial use, allowing the licensor to maintain control over the protocol's distribution and commercialization.

02

Revenue & Fee Mechanics

Specifies the economic model for the license, typically enforced automatically by smart contracts. This includes:

  • Royalty rates (e.g., a percentage of transaction fees or protocol revenue)
  • Fee payment triggers (e.g., on token mint, trade, or yield generation)
  • Payment settlement in native tokens or stablecoins. Examples include the Uniswap Business Source License (BSL) fee switch mechanism.
03

Term & Termination Clauses

Encodes the license's duration and conditions for revocation into smart contract logic. Key aspects include:

  • Time-locked expiration (e.g., a 2-4 year commercial use license).
  • Automatic reversion to a more permissive license (like GPL or MIT) after the term.
  • Breach conditions that can trigger termination, such as non-payment of fees or violation of usage rules.
04

Scope of Grant

Precisely delineates what licensed technology can and cannot be used for. This is critical for forking and commercialization. It may restrict:

  • Use cases (e.g., non-commercial R&D only).
  • Network deployment (e.g., forbidding deployment on competing L1/L2 chains).
  • Code modifications, defining what constitutes a derivative work.
05

On-Chain Enforcement

The mechanism by which license terms are programmatically verified and enforced without relying on traditional legal systems. This is achieved through:

  • Upgradeable proxy contracts that can modify terms.
  • Modifier functions that check for compliance before execution.
  • Oracle integrations for off-chain data verification related to breaches.
examples
BLOCKCHAIN INTELLECTUAL PROPERTY

Examples of License Frameworks

These frameworks provide standardized legal templates for managing ownership, licensing, and commercialization of digital assets on-chain, from NFTs to open-source code.

04

Art Blocks Engine Artist License

A specialized license framework for generative art projects built on the Art Blocks Engine. It defines the rights split between the platform, the artist, and the collector. Typically, it grants the collector:

  • Personal, non-commercial display rights.
  • Limited commercial rights (e.g., for merchandise under a revenue cap).
  • The artist retains the underlying copyright and the right to produce derivative 2D prints. This model creates a clear commercial framework for generative art NFTs.
05

Uniswap v3 (Business Source License)

An example of a source-available license with a time-delayed open-source conversion. The core Uniswap v3 code was initially released under the Business Source License 1.1, which prohibited commercial use for a set period (initially 2 years). After this time-lock expired, the license automatically converted to a standard GPL v2.0 open-source license. This approach allows projects to maintain a temporary competitive advantage while committing to long-term openness.

COMPARISON

License Framework vs. Traditional Licensing

Key differences between on-chain license frameworks and conventional intellectual property licensing models.

FeatureLicense Framework (On-Chain)Traditional Licensing (Off-Chain)

Governing Logic

Programmable Smart Contract

Legal Contract (Paper/Digital)

Enforcement Mechanism

Automatic, Code-Based

Manual, Legal Action

Royalty Distribution

Real-Time, Automated Splits

Delayed, Manual Processing

Transparency & Auditability

Fully Transparent, On-Chain Ledger

Opaque, Private Records

Modification Process

Governance Vote or Admin Key

Contract Amendment & Re-signing

Global Compliance

Uniform Rules for All Users

Jurisdiction-Specific Agreements

Integration Cost

Gas Fee per Transaction

Legal & Administrative Overhead

Default State

Permissions Denied by Default

Rights Granted via Contract

ecosystem-usage
LICENSE FRAMEWORK

Ecosystem Usage & Integration

A blockchain license framework is a set of rules and permissions governing how a protocol's code, data, or intellectual property can be used, integrated, and commercialized by third parties.

01

Open Source vs. Proprietary

Defines the core access rights to the underlying code.

  • Open Source (e.g., MIT, GPL, Apache 2.0): Grants broad rights to use, modify, and distribute the software, often with conditions like attribution or requiring derivative works to be open-sourced.
  • Proprietary: Retains exclusive rights, requiring explicit commercial licensing for use, modification, or integration, common in enterprise blockchain solutions.
02

Commercial Licensing Terms

Specific conditions for commercial deployment and revenue generation.

  • Revenue Sharing: Requires a percentage of fees or profits from applications built on the protocol to be paid to the original developers or a treasury.
  • Usage Tiers: Different terms based on scale (e.g., free for startups, paid for enterprises).
  • Restricted Use Cases: May prohibit use in certain industries (e.g., gambling, illicit activities).
03

Integration & API Licensing

Governs how external systems connect to and use a protocol's services.

  • API Terms of Service: Defines rate limits, data usage rights, and acceptable query patterns for accessing node RPCs or indexed data.
  • Branding & Attribution: Specifies how the protocol must be credited in front-end applications and marketing materials.
  • SLA (Service Level Agreement): For licensed node infrastructure, defines uptime guarantees and support levels.
04

Data & Oracle Licensing

Rules for using data generated by or fed into a blockchain.

  • On-Chain Data: Typically considered public domain, but derived datasets (e.g., indexed histories) may be licensed.
  • Oracle Data Feeds: The data itself (e.g., price feeds) is often licensed from providers like Chainlink, with terms for on-chain and off-chain use.
  • NFT Licensing: Governs IP rights for the underlying artwork/media, often specified separately from token ownership (e.g., Creative Commons, commercial rights).
05

Forking & Derivative Works

Policies on creating new chains or protocols from the original codebase.

  • Permissive Licenses (Apache 2.0): Allow forking into proprietary, competing networks without obligation to open-source changes.
  • Copyleft Licenses (GPL): Require any forked chain to also be open-sourced under the same license, discouraging proprietary derivatives.
  • Brand & Trademark: Even if code is open-source, forking a project does not grant rights to use its original name or logos.
06

Compliance & Legal Enforcement

Mechanisms to ensure adherence to the license terms.

  • On-Chain Enforcement: Using smart contracts to manage access keys, collect fees, or revoke permissions programmatically.
  • Off-Chain Legal: Traditional legal agreements and copyright law to pursue violations, especially for breaches of commercial terms.
  • Governance Upgrades: DAOs or foundations may hold the right to update license terms via governance votes, affecting all future users.
BLOCKCHAIN DEVELOPMENT

Common Misconceptions About License Frameworks

Clarifying persistent myths and misunderstandings surrounding the legal frameworks governing blockchain code, from open-source licenses to proprietary models.

No, blockchain code is not automatically open-source. The source code's license determines its permissions. While many public blockchain clients (like Geth or Bitcoin Core) use permissive licenses (e.g., MIT, GPL), the underlying protocol's rules are separate from the license of a specific implementation. A project can release a closed-source client that interacts with an open protocol. Furthermore, the deployment of a smart contract as bytecode to a public ledger does not inherently license its source code; explicit licensing is required for it to be considered open-source.

LICENSE FRAMEWORK

Technical Details & Implementation

This section details the legal and technical frameworks governing the use, modification, and distribution of blockchain software, protocols, and data.

A software license in blockchain is a legal instrument that grants permission to use, modify, and distribute the source code of a protocol, smart contract, or application. It defines the rights and obligations of developers, users, and contributors, directly impacting a project's open-source nature, commercialization potential, and ecosystem growth. Common licenses include the GNU General Public License (GPL), which requires derivative works to be open-sourced, and the MIT License or Apache 2.0, which are more permissive and allow for proprietary forks. The choice of license is a critical governance decision that shapes developer adoption and project sustainability.

LICENSE FRAMEWORK

Frequently Asked Questions (FAQ)

Answers to common questions about the licensing of Chainscore's data, APIs, and intellectual property for developers and enterprises.

The Chainscore License Framework is a structured set of terms that governs the use, distribution, and modification of Chainscore's proprietary data, software, and intellectual property. It defines the rights and obligations for different user types, from individual developers to large enterprises, ensuring clarity and legal compliance. The framework typically includes provisions for API usage limits, data redistribution rights, attribution requirements, and commercial licensing fees. It is designed to protect Chainscore's core assets while enabling innovation and integration by third parties.

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License Framework: NFT IP Terms & Smart Contracts | ChainScore Glossary