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aptos-cid

Decentralized identity on Aptos, the underlying account system of ComingChat

Intro

ComingChat 4-digit cid is abbreviated as aptos-cid on aptos

• (1) aptos-cid ends with ".aptos", such as "1234.aptos".

• (2) aptos-cid is Aptos Token (equivalent to ERC721), which can be freely circulated in the NFT market.

• (3) Limited release, the total amount is limited, only 9000 ([1000, 9999]), first come first registration, the later the fee is higher.

• (4) Each cid is valid for 2 years. After it expires, anyone can register it again.

• (5) When the validity period of each cid is less than 6 months, each cid can be renewed for 2 years.

Features

• (1) Each cid can log in to ComingChat.
• (2) Each cid holder can enjoy preferential prices from ComingChat NFT partners.

Price function

register_at_month = seconds_to_months((now - start_time_sec))
price = base_price * sqrt(register_at_month)

Validity period

• Each cid is only valid for 2 years.
• Each registration and renewal adds 2 years of validity.

Roles

• owner: aptos-cid contract deployer.
• admin: aptos-cid admin.
• foundation: aptos-cid contract revenue account.
• user: any user registered with aptos-cid.

Entry functions

cid module:

• (1) initialize(owner): execute once to complete the contract configuration.
• (2) register(user): register aptos-cid and bind the address, valid for 2 years.
• (3) renew(user): the validity period is less than 6 months to operate, and the validity period is increased by 2 years.
• (4) set_cid_address(user): rebind aptos-cid and address.
• (5) clear_cid_address(user): unbind aptos-cid and address.
• (6) allow_direct_transfer(user): allow sender transfer any nft to self.
• (7) cid_token_transfer(user): send cid nft to receiver.
• (8) token_transfer(user): send any nft to receiver.

config module:

• (1) set_is_enabled(owner/admin): whether to stop aptos-cid register and renew.
• (2) set_fundation_address(owner/admin): set the aptos-cid nft fundation address.
• (3) set_admin_address(owner/admin): set aptos-cid nft admin address.
• (4) set_tokendata_description(owner/admin): set aptos-cid nft description.
• (5) set_tokendata_url_prefix(owner/admin): set aptos-cid nft url prefix.
• (6) set_cid_price(owner/admin): set the base price of aptos-cid nft.

Important notes

• (1) Only users holding cid can bind address, and can bind any address. If the address of owner does not want to be bound to cid, then call clear_cid_address.

• (2) Users can complete the transfer of cid through aptos_token. After the transfer, the new owner of the cid should call clear_cid_address or set_cid_address to complete the binding with the address.

• (3) Call unchecked_cid_resolved_address returns the address bound to cid, this return value is not timely, because clear_cid_address or set_cid_address may not be called in time.