At present, the NFT market is blooming everywhere. As of today, the total sales of NFT on the Ethereum chain have exceeded 24 billion US dollars, a record high, a 20% increase from January, and the number of transactions on the chain has exceeded 9 million.
A large number of sought-after collectibles are constantly emerging in NFT transactions, such as the Meebits series of Cryptopunks, with a 24-hour transaction volume of more than 2.8 million US dollars, an increase of 17.17%, while BAYC (Bored Ape Yacht Club, Boring Ape) parent company Yuga Labs announced that it has acquired the IP of CryptoPunks and Meebits NFT collections from Larva Labs, as well as the recent popularity of Moonbirds in the community. NFTs from all walks of life are appearing on the world stage in their own ways.
ERC721 and ERC20
We can always see all kinds of news about NFT, tracing back to the source, what is NFT? NFT originated from EIP-721 (Ethereum Implementation Proposal 721) at the end of 2017. Non-fungible tokens contain identifying information recorded in their smart contracts. This information makes each token unique and therefore cannot be directly replaced by another token.
Use the Tokenview Ethereum browser to query the list of ERC721 tokens on Ethereum and the transfer information of each token.
https://eth.tokenview.com/cn/tokenlist?token=721&activeTab=1
How are these NFTs different from the homogeneous token ERC20 we usually come into contact with? The table below lists the differences between ERC20 and ERC721.
ERC1155
ERC-20 and ERC-721 tokens are not compatible with each other. Therefore, the highlight of the ERC-1155 token protocol standard is cross-chain compatibility. The ERC-1155 standard also makes its assets compatible with other ecosystems, enabling operations across multiple blockchains.
Similarly, you can use the Tokenview Ethereum browser to check which ERC1155 token information and transactions are currently available. The first place is Opensea Shared Storefront issued by Opensea, with a total of 3773 transfers in 24 hours.
https://eth.tokenview.com/cn/tokenlist?token=1155&activeTab=1
NFT API
As a multi-currency blockchain browser and data platform, Tokenview has also launched an NFT API, which can call NFT data including ERC721 and ERC1155. mainly include:
1. The proportion of holdings of all addresses of ERC721/ERC1155 NFT.
"quantity": 290, 0x7381...e2ad addresses hold 290 NFTs.
"address": 0x7381c2e71a60cf9ef5ef8fbc7b040b390797e2ad, which holds an address of this NFT.
"ratio": 0.9292489105357601, the proportion of NFT held by this address.
2. The number of ERC721/ERC1155 token NFT held by the address.
3. ERC721/ERC1155 NFT transaction records for each ID.
"block_no": 14568803, the block height where this NFT ID transaction is located;
"tx": 0x7570cb6e2a2dfcdf3ccddb3768a67b63851114a971be2bbba8a297e84a11b681, the hash of this NFT ID transaction;
“timestamp”: 1649740490,transaction hour;
"token": 0x495f947276749ce646f68ac8c248420045cb7b5e, NFT contract address;
“from”: ’0x5f0373bd3785f292459b5db700e663e9fd3b14b9’,The transfer-out address of this NFT ID transaction;
"to": '0x8888888888e9997e64793849389a8faf5e8e547c', the transfer-in address of this NFT ID transaction;
"nftid": 42975819958711721920232916901508235966651862508478342993704198279389415211009, the ID of NFT;
"amount": '1', the amount of the transaction is 1.
4. Specify the current address of the ERC721/ERC1155 NFT ID.
"owner": '0x2a1dc3355da17a9496b82065f368e9f2a6547f10', the current address of this NFT;
"nftid": '2840', the ID of this NFT;
“date”: ’2022-04-12’,Time to own this ID NFT;
"amount": '1' the number of NFTs with this ID;
Tokenview blockchain full-currency data API (https://services.tokenview.com) provides blockchain data API services for 2000+ companies. Real-time access to blockchain data through a stable and fast data interface can avoid costs such as self-built nodes, synchronous blocks, space occupation, and operation and maintenance.
