Update docs.hedera.com for Hedera Smart Contracts migration to Hiero

[Reccetech]

Summary

As outlined in here, multiple Hedera repositories and related packages have moved from the hashgraph GitHub organization to the hiero-ledger (or hiero) organization.

The docs.hedera.com site must be updated to remove references to legacy repositories and NPM packages and point to the new Hiero locations.

Required Updates

1. GitHub Repository Links

Search the entire hedera-docs repo for references to:
https://github.com/hashgraph/hedera-smart-contracts
and then replace with:
https://github.com/hiero-ledger/hiero-contracts

2. NPM Package Changes

Some packages have moved or been republished under new scopes as part of the Hiero transition.
Actions required:

Search for references to:
npm install github:hashgraph/hedera-smart-contracts
and replace with:
npm install github.com:hiero-ledger/hiero-contracts

Example targets for changes

HTS x EVM - How to Mint NFTs (Part 1)
HSS x EVM - Schedule Smart Contract Calls (Part 1)
HSS x EVM - Dynamic Rebalancing Through Scheduled Execution (Part 2)
System Smart Contracts
Hybrid (HTS + EVM) Tokenization
Wrapped HBAR (WHBAR)
Hedera Service Solidity Libraries
Compiling Smart Contracts

Acceptance Criteria

• No remaining hashgraph/ GitHub URLs unless intentionally preserved for archived projects.
• All npm install instructions use the correct, current package names.
• All code snippets reflect updated imports.
• Docs build passes without broken links.

[theekrystallee]

thanks for creating an issue @Reccetech. adding this to my current sprint

[Reccetech]

@kpachhai @Ferparishuertas Please add anything I forgot.

[kpachhai]

Search for references to:
npm install github:hashgraph/hedera-smart-contracts
and replace with:
npm install github.com:hiero-ledger/hiero-contracts

It should actually be npm install @hiero-ledger/hiero-contracts but this should only be changed once Fer's team pushes this to the npm registry(this hasn't happened yet).

Another thing to note: The directory structure has also changed. The old repo used contracts/system-contracts/hedera-token-service/... while the new repo uses contracts/token-service/... (no system-contracts subdirectory). URL paths will need to be mapped accordingly.

I did a quick search through and found around 26 pages(following is generated using AI but I verified most of them so this should be a good list to update):

Core Concepts — Smart Contracts

1. hedera/core-concepts/smart-contracts/compiling-smart-contracts.mdx

   • Link to HTS Precompile Methods README

2. hedera/core-concepts/smart-contracts/gas-and-fees.mdx

   • Links to HTS, PRNG, and Exchange Rate .sol files

3. hedera/core-concepts/smart-contracts/security.mdx

   • Link to HTS system contract (release/0.3 branch)

4. hedera/core-concepts/smart-contracts/system-smart-contracts.mdx

   • Repo description + 5 system contract directory links (HTS, Exchange Rate, Account Service, Schedule Service, PRNG)

5. hedera/core-concepts/smart-contracts/system-smart-contracts/hedera-account-service.mdx

   • Link to Hedera Account Service system contract directory

6. hedera/core-concepts/smart-contracts/tokens-managed-by-smart-contracts/hedera-token-service-system-contract.mdx

   • Link to HTS directory

7. hedera/core-concepts/smart-contracts/understanding-hederas-evm-differences-and-compatibility/for-evm-developers-migrating-to-hedera/accounts-signature-verification-and-keys-ecdsa-vs.-ed25519.mdx

   • Link to Hedera Account Service system contract

8. hedera/core-concepts/smart-contracts/understanding-hederas-evm-differences-and-compatibility/for-evm-developers-migrating-to-hedera/handling-hbar-transfers-in-contracts.mdx

   • 2 links to contracts/solidity directory

9. hedera/core-concepts/smart-contracts/understanding-hederas-evm-differences-and-compatibility/for-evm-developers-migrating-to-hedera/token-management-with-hedera-token-service.mdx

   • Link to HTS system contract functions

10. hedera/core-concepts/smart-contracts/understanding-hederas-evm-differences-and-compatibility/for-hedera-native-developers-adding-smart-contract-functionality/extending-token-management-with-smart-contracts.mdx

    • Link to HTS system contract functions

11. hedera/core-concepts/smart-contracts/wrapped-hbar-whbar.mdx

    • 2 links to WHBAR.sol source

Core Concepts — Tokens

12. hedera/core-concepts/tokens/erc-evm-compatible-tokenization.mdx

    • 4 facade contract links (IHRC904AccountFacade, IHRC906AccountFacade, IHRC755ScheduleFacade, IHRC904TokenFacade)

13. hedera/core-concepts/tokens/hybrid-hts-+-evm-tokenization.mdx

    • 5 system contract source links in table (HAS, HSS, HTS, Exchange Rate, PRNG)

SDKs & APIs

14. hedera/sdks-and-apis/sdks/smart-contracts/hedera-service-solidity-libraries.mdx
    • Heavy references — 15+ links to individual .sol files and IHederaTokenService.sol parameter type references throughout

Open Source Solutions

15. hedera/open-source-solutions/interoperability-and-bridging/layerzero.mdx
    • 8+ links to LayerZero examples, OFT, ONFT, OFT Adapter, ONFT Adapter, HTS Connector

Support & Community

16. hedera/support-and-community/glossary.mdx
    • Incidental text match ("hedera-smart-contracts" in a Hedera blog link — verify if this actually needs changing)

Tutorials — Smart Contracts

17. hedera/tutorials/smart-contracts/how-to-fork-the-hedera-network-with-hardhat-advanced-hts.mdx ⚠️

    • Repo link, HTS precompiles link, package.json dependency, Solidity imports (6 import lines)

18. hedera/tutorials/smart-contracts/hss-x-evm-part-1-schedule-smart-contract-calls.mdx ⚠️

    • npm install command, explanation text, Solidity imports (2 import lines)

19. hedera/tutorials/smart-contracts/hss-x-evm-part-2-dynamic-rebalancing.mdx ⚠️

    • npm install command, explanation text, Solidity imports (3 import lines)

20. hedera/tutorials/smart-contracts/hts-x-evm-part-1-how-to-mint-nfts.mdx ⚠️

    • npm install command, explanation text, Solidity imports (4 import lines)

21. hedera/tutorials/smart-contracts/hts-x-evm-part-2-kyc-and-update.mdx ⚠️

    • Solidity imports (4 import lines)

22. hedera/tutorials/smart-contracts/hts-x-evm-part-3-how-to-pause-freeze-wipe-and-delete-nfts.mdx ⚠️

    • Solidity imports (4 import lines)

23. hedera/tutorials/smart-contracts/send-and-receive-hbar-using-solidity-smart-contracts.mdx

    • 2 GitHub raw import URLs in Solidity code, 1 project repo link

24. hedera/tutorials/more-tutorials.mdx

    • Incidental match (blog link — verify)

Tutorials — Token

25. hedera/tutorials/token/create-and-transfer-an-nft-using-a-solidity-contract.mdx

    • Link to contracts folder in repo

26. hedera/tutorials/token/hybrid-hts-+-evm-tokenization.mdx

    • 5 system contract directory links (HAS, HSS, HTS, Exchange Rate, PRNG)