Looking for Attestation Contract ABI.

[realchoubey]

I'm looking to index attestation contract event data:
https://explorer.celo.org/address/0xD787384d91a7fFaC85d51C63EF71580df6C677B7/contracts

https://github.com/celo-org/celo-monorepo/blob/master/packages/protocol/contracts/identity/Attestations.sol
Can someone point me to the attestation contracts ABI, because implementation contract is not verified.

cc: @0xarthurxyz

[critesjosh]

It looks like this page has the Attestation.sol ABI https://explorer.celo.org/address/0x936d74304a17440488e02197285a2EA5f6Dd40A8/contracts

[carterqw2]

Here is the latest implementation verified on Sourcify
https://explorer.celo.org/address/0x1EC3366D384ee7996F2F70B67A65C5d54Ce96040/contracts
https://repo.sourcify.dev/contracts/partial_match/42220/0x1EC3366D384ee7996F2F70B67A65C5d54Ce96040/

[arthurgousset]

Thanks @critesjosh and @carterqw2 for answering so quickly! 🙏

[realchoubey]

@carterqw2 @critesjosh

1. What is the difference between below three Attestation contracts:
   https://explorer.celo.org/address/0x936d74304a17440488e02197285a2EA5f6Dd40A8/contracts
   https://repo.sourcify.dev/contracts/partial_match/42220/0x1EC3366D384ee7996F2F70B67A65C5d54Ce96040/
   https://explorer.celo.org/address/0xD787384d91a7fFaC85d51C63EF71580df6C677B7/transactions

2. Which one to use for indexing Attestation transactions ?

3. As per events we don't see direct phone number, can you please let me know which event parameter is phone number.
   https://github.com/celo-org/celo-monorepo/blob/83b5c21c20fb22d17c46f73bc67b3de88f69e171/packages/protocol/contracts/identity/Attestations.sol#L97

[critesjosh]

1. I am not exactly sure about the differences between the first two, but the third contract is a proxy contract that allows the Attestations contract to be upgraded. You can read more about the proxy upgrade pattern here.
2. I think you'd want to watch this contract (another attestations proxy). If you look at the logs it includes events like AttestationCompleted.
3. The contract doesn't log the user's phone number--the phone number is considered private data. A phone hash is used as the identifier, hash(phoneNumber + pepper). The pepper is queryable via ODIS. You can find an example of how to do that in javascript here.

[realchoubey]

Thanks @critesjosh. I am from Dapplooker and implementing subgraph/dashboard for attestation contract transactions. This is very helpful

[eelanagaraj]

Agreed with @critesjosh! I believe you want the AttestationsProxy linked in (2).
You can also check the current implementation and proxy addresses for the core Celo contracts on mainnet via celocli network:contracts --node https://forno.celo.org/. (For alfajores, just use --node https://alfajores-forno.celo-testnet.org or another alfajores node!)

[realchoubey]

@carterqw2 @critesjosh @eelanagaraj
Thanks for your helps guys! I'm able to deploy the sub-graph.

It would be great if you guys can give me some idea on what will be useful in terms of Analytics of Attestation?

[arthurgousset]

Glad you found your answers @realchoubey!
Please could you take the analytics questions for the attestations contract into a separate discussion topic.
This way, we keep the threads clean and easily searchable. Thanks 🙏

[arthurgousset]

For future reference, here is also a useful page with proxy and implementation contract addresses for the "core contracts": https://dhutch-test.celo-networks-dev.org/

[arthurgousset]

Quick ping because I transferred this discussion

• from: celo-org/celo-monorepo/discussions
• to: celo-org/identity/discussions

to be more flexible in the types of discussions we have:

• 💡 Feature requests (Feedback)
• 😺 Help needed (Q&A)
• 🗳️ Polls (Voting)
• 🙌 Show and tell (Updates)

Sorry for any inconvenience 🙏