Integra Ledger is a blockchain for the global legal industry that aims to empower law firms, software developers, and businesses to develop applications and standards for a decentralized legal network.

The idea behind Integra Ledger is to use blockchain technology as a means to improve the security, privacy, productivity, and interoperability of the global legal technology ecosystem. While not a smart contract platform in the same vein as Ethereum, Integra Ledger's blockchain can be used to verify and authenticate legal documents and transactions, which can be seen as a foundational part of a broader legal smart contract ecosystem.

For instance, with the use of Integra Ledger's technology, if two parties have a legal contract, the document can be given a unique identifier on the blockchain (a "hash") which doesn't contain the contents of the document, but essentially acts as a tamper-proof seal. If the document is changed, the hash will not match, and the parties will know the document is not the original. This can help to improve trust and reduce disputes.

It's important to note that the practical use of blockchain in the legal industry is still in the experimental stages. Blockchain's potential in the law is vast - from smart contracts that auto-execute based on certain conditions, to immutable ledgers of legal documents - but this potential is yet to be fully realized and adopted by the industry.

So in context of smart contracts, Integra Ledger provides the underlying blockchain infrastructure that can enhance the security and verifiability of legal transactions and could potentially be used as a platform for implementing legal-centric smart contracts in the future.