did:cow, a proposal for an ID resolution method with most of the convenience of did:plc/did:web and the robustness of a public blockchain
move empty check
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README.md
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README.md
···
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## 9. Reference Implementation
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-
Deployed on Sepolia testnet: [`0xE75B156D97cd47a09939837411b0D9D7b64c3CF2`](https://sepolia.etherscan.io/address/0xE75B156D97cd47a09939837411b0D9D7b64c3CF2)
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Deployed on Sepolia testnet: [`0xfca809F35369b6A5F47f52226893Ae1B55eE281b`](https://sepolia.etherscan.io/address/0xfca809F35369b6A5F47f52226893Ae1B55eE281b)
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**Contract functions (`CowRegistry.sol`):**
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- `calculateCowHash(controller, wrappedDID)` — derive the registry key for a did:cow ID
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src/CowRegistry.sol
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src/CowRegistry.sol
···
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Cow storage cow = cows[cowHash];
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if (cow.deactivated) revert AlreadyDeactivated();
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if (!cow.initialized) {
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if (bytes(_wrappedDID).length == 0) revert EmptyWrappedDID();
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cow.initialized = true;
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cow.controller = _controller;
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cow.wrappedDID = _wrappedDID;
···
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/// @param _controller The initial controller address.
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/// @param _wrappedDID The initial wrapped DID, without the leading "did:" prefix.
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function initializeCow(address _controller, string memory _wrappedDID) external {
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if (bytes(_wrappedDID).length == 0) revert EmptyWrappedDID();
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_ensureCowInitialized(_controller, _wrappedDID);
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}
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