ERC721: How to get the owned tokens of an addressERC721 ownedTokens array length limitations on owners with thousands of tokensHow to know which ERC20 tokens a wallet owns?List ERC721 tokens owned by a user on a web pageProper way to implement “buyable” ERC721 tokensHow do ERC721 tokens get created on private blockchain?How can there be a balance for an ERC721 contract?Two ERC721 tokens that refer to the same metadataGet ERC721 token total supply using web3.jsWhat is the difference between the transfer and transferFrom function in an ERC721 contractDeploy ERC721 tokens to many addresses
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ERC721: How to get the owned tokens of an address
ERC721 ownedTokens array length limitations on owners with thousands of tokensHow to know which ERC20 tokens a wallet owns?List ERC721 tokens owned by a user on a web pageProper way to implement “buyable” ERC721 tokensHow do ERC721 tokens get created on private blockchain?How can there be a balance for an ERC721 contract?Two ERC721 tokens that refer to the same metadataGet ERC721 token total supply using web3.jsWhat is the difference between the transfer and transferFrom function in an ERC721 contractDeploy ERC721 tokens to many addresses
There is a balanceOf function, but it only displays one uint (the token identifier)
I see most ERC721 tokens doing this so I am confused on how to view all owned tokens.
solidity web3js erc-721
asked 1 hour ago
BlockchainBoyBlockchainBoy
456
add a comment |
There is a balanceOf function, but it only displays one uint (the token identifier)
I see most ERC721 tokens doing this so I am confused on how to view all owned tokens.
solidity web3js erc-721
asked 1 hour ago
BlockchainBoyBlockchainBoy
456
add a comment |
There is a balanceOf function, but it only displays one uint (the token identifier)
I see most ERC721 tokens doing this so I am confused on how to view all owned tokens.
solidity web3js erc-721
asked 1 hour ago
BlockchainBoyBlockchainBoy
456
There is a balanceOf function, but it only displays one uint (the token identifier)
I see most ERC721 tokens doing this so I am confused on how to view all owned tokens.
solidity web3js erc-721
solidity web3js erc-721
asked 1 hour ago
BlockchainBoyBlockchainBoy
456
asked 1 hour ago
BlockchainBoyBlockchainBoy
456
asked 1 hour ago
BlockchainBoyBlockchainBoy
456
asked 1 hour ago
BlockchainBoyBlockchainBoy
456
asked 1 hour ago
BlockchainBoyBlockchainBoy
456
456
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
The function balanceOf actually returns the number of owned tokens and not the identifier of an owned token.
Therefore I'd assume the process could go something like this:
1) Find out how many tokens an address has (balanceOf). If this is more than zero, continue the process.
2) Find out which tokens exist in the contract. The standard offers no direct functionality for this so this depends on the implementation. Or, as is probably the case, simply start enumerating from zero upwards hoping that the tokens are enumerable in that way (and not assigned for example to random numbers). So you would check "does someone own token 0? does someone own token 1? .."
3) Once you have found all the tokens owned by the address you can stop the process.
answered 56 mins ago
Lauri PeltonenLauri Peltonen
5,8382525
add a comment |
There is basically no way to easily view all owned tokens. My Ethereum wallets own probably lots of random worthless tokens which someone has airdropped and I don't even know about it.
Some services (wallets) display many of the owned tokens. I'm unsure how exactly they do that but most likely they simply have a database of known token contracts and they check whether a certain address owns those known tokens.
If I now created a new token and donated some of it to random wallets nobody would probably know about it unless I somehow tell wallet creators "please include my token contract in your checks".
At least myetherwallet used to display all (known) ERC20 tokens still about a year ago but the quickly they gave up and last I checked you had to manually enter the contract address to see those tokens. The amount of different token contracts exploded a year ago and it was probably too much hassle to try to keep track of them (to store them all in their database).
answered 1 hour ago
Lauri PeltonenLauri Peltonen
5,8382525
I am looking at a specific token, I don't see a easy way to check this from the token's contract
– BlockchainBoy
1 hour ago
Ah, sorry, I had misunderstood the question. My answer is not so relevant in that case.
– Lauri Peltonen
1 hour ago
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
The function balanceOf actually returns the number of owned tokens and not the identifier of an owned token.
Therefore I'd assume the process could go something like this:
1) Find out how many tokens an address has (balanceOf). If this is more than zero, continue the process.
2) Find out which tokens exist in the contract. The standard offers no direct functionality for this so this depends on the implementation. Or, as is probably the case, simply start enumerating from zero upwards hoping that the tokens are enumerable in that way (and not assigned for example to random numbers). So you would check "does someone own token 0? does someone own token 1? .."
3) Once you have found all the tokens owned by the address you can stop the process.
answered 56 mins ago
Lauri PeltonenLauri Peltonen
5,8382525
add a comment |
The function balanceOf actually returns the number of owned tokens and not the identifier of an owned token.
Therefore I'd assume the process could go something like this:
1) Find out how many tokens an address has (balanceOf). If this is more than zero, continue the process.
2) Find out which tokens exist in the contract. The standard offers no direct functionality for this so this depends on the implementation. Or, as is probably the case, simply start enumerating from zero upwards hoping that the tokens are enumerable in that way (and not assigned for example to random numbers). So you would check "does someone own token 0? does someone own token 1? .."
3) Once you have found all the tokens owned by the address you can stop the process.
answered 56 mins ago
Lauri PeltonenLauri Peltonen
5,8382525
add a comment |
The function balanceOf actually returns the number of owned tokens and not the identifier of an owned token.
Therefore I'd assume the process could go something like this:
1) Find out how many tokens an address has (balanceOf). If this is more than zero, continue the process.
2) Find out which tokens exist in the contract. The standard offers no direct functionality for this so this depends on the implementation. Or, as is probably the case, simply start enumerating from zero upwards hoping that the tokens are enumerable in that way (and not assigned for example to random numbers). So you would check "does someone own token 0? does someone own token 1? .."
3) Once you have found all the tokens owned by the address you can stop the process.
answered 56 mins ago
Lauri PeltonenLauri Peltonen
5,8382525
The function balanceOf actually returns the number of owned tokens and not the identifier of an owned token.
Therefore I'd assume the process could go something like this:
1) Find out how many tokens an address has (balanceOf). If this is more than zero, continue the process.
2) Find out which tokens exist in the contract. The standard offers no direct functionality for this so this depends on the implementation. Or, as is probably the case, simply start enumerating from zero upwards hoping that the tokens are enumerable in that way (and not assigned for example to random numbers). So you would check "does someone own token 0? does someone own token 1? .."
3) Once you have found all the tokens owned by the address you can stop the process.
answered 56 mins ago
Lauri PeltonenLauri Peltonen
5,8382525
answered 56 mins ago
Lauri PeltonenLauri Peltonen
5,8382525
answered 56 mins ago
Lauri PeltonenLauri Peltonen
5,8382525
answered 56 mins ago
Lauri PeltonenLauri Peltonen
5,8382525
5,8382525
add a comment |
add a comment |
There is basically no way to easily view all owned tokens. My Ethereum wallets own probably lots of random worthless tokens which someone has airdropped and I don't even know about it.
Some services (wallets) display many of the owned tokens. I'm unsure how exactly they do that but most likely they simply have a database of known token contracts and they check whether a certain address owns those known tokens.
If I now created a new token and donated some of it to random wallets nobody would probably know about it unless I somehow tell wallet creators "please include my token contract in your checks".
At least myetherwallet used to display all (known) ERC20 tokens still about a year ago but the quickly they gave up and last I checked you had to manually enter the contract address to see those tokens. The amount of different token contracts exploded a year ago and it was probably too much hassle to try to keep track of them (to store them all in their database).
answered 1 hour ago
Lauri PeltonenLauri Peltonen
5,8382525
I am looking at a specific token, I don't see a easy way to check this from the token's contract
– BlockchainBoy
1 hour ago
Ah, sorry, I had misunderstood the question. My answer is not so relevant in that case.
– Lauri Peltonen
1 hour ago
add a comment |
There is basically no way to easily view all owned tokens. My Ethereum wallets own probably lots of random worthless tokens which someone has airdropped and I don't even know about it.
Some services (wallets) display many of the owned tokens. I'm unsure how exactly they do that but most likely they simply have a database of known token contracts and they check whether a certain address owns those known tokens.
If I now created a new token and donated some of it to random wallets nobody would probably know about it unless I somehow tell wallet creators "please include my token contract in your checks".
At least myetherwallet used to display all (known) ERC20 tokens still about a year ago but the quickly they gave up and last I checked you had to manually enter the contract address to see those tokens. The amount of different token contracts exploded a year ago and it was probably too much hassle to try to keep track of them (to store them all in their database).
answered 1 hour ago
Lauri PeltonenLauri Peltonen
5,8382525
I am looking at a specific token, I don't see a easy way to check this from the token's contract
– BlockchainBoy
1 hour ago
Ah, sorry, I had misunderstood the question. My answer is not so relevant in that case.
– Lauri Peltonen
1 hour ago
add a comment |
There is basically no way to easily view all owned tokens. My Ethereum wallets own probably lots of random worthless tokens which someone has airdropped and I don't even know about it.
Some services (wallets) display many of the owned tokens. I'm unsure how exactly they do that but most likely they simply have a database of known token contracts and they check whether a certain address owns those known tokens.
If I now created a new token and donated some of it to random wallets nobody would probably know about it unless I somehow tell wallet creators "please include my token contract in your checks".
At least myetherwallet used to display all (known) ERC20 tokens still about a year ago but the quickly they gave up and last I checked you had to manually enter the contract address to see those tokens. The amount of different token contracts exploded a year ago and it was probably too much hassle to try to keep track of them (to store them all in their database).
answered 1 hour ago
Lauri PeltonenLauri Peltonen
5,8382525
There is basically no way to easily view all owned tokens. My Ethereum wallets own probably lots of random worthless tokens which someone has airdropped and I don't even know about it.
Some services (wallets) display many of the owned tokens. I'm unsure how exactly they do that but most likely they simply have a database of known token contracts and they check whether a certain address owns those known tokens.
If I now created a new token and donated some of it to random wallets nobody would probably know about it unless I somehow tell wallet creators "please include my token contract in your checks".
At least myetherwallet used to display all (known) ERC20 tokens still about a year ago but the quickly they gave up and last I checked you had to manually enter the contract address to see those tokens. The amount of different token contracts exploded a year ago and it was probably too much hassle to try to keep track of them (to store them all in their database).
answered 1 hour ago
Lauri PeltonenLauri Peltonen
5,8382525
answered 1 hour ago
Lauri PeltonenLauri Peltonen
5,8382525
answered 1 hour ago
Lauri PeltonenLauri Peltonen
5,8382525
answered 1 hour ago
Lauri PeltonenLauri Peltonen
5,8382525
5,8382525
I am looking at a specific token, I don't see a easy way to check this from the token's contract
– BlockchainBoy
1 hour ago
Ah, sorry, I had misunderstood the question. My answer is not so relevant in that case.
– Lauri Peltonen
1 hour ago
add a comment |
I am looking at a specific token, I don't see a easy way to check this from the token's contract
– BlockchainBoy
1 hour ago
Ah, sorry, I had misunderstood the question. My answer is not so relevant in that case.
– Lauri Peltonen
1 hour ago
I am looking at a specific token, I don't see a easy way to check this from the token's contract
– BlockchainBoy
1 hour ago
I am looking at a specific token, I don't see a easy way to check this from the token's contract
– BlockchainBoy
1 hour ago
Ah, sorry, I had misunderstood the question. My answer is not so relevant in that case.
– Lauri Peltonen
1 hour ago
Ah, sorry, I had misunderstood the question. My answer is not so relevant in that case.
– Lauri Peltonen
1 hour ago
add a comment |
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