3
votes
Accepted
How To Get Transaction Royalityies on Fungable Tokens
This is not possible. Native Tokens are first class citizens on Cardano. They are not part of a smart contract that could enforce behavior like this but are assets in your wallet like ADA.
It's the ...
- 3,565
3
votes
Accepted
How is metadata typed on the blockchain
The transaction metadata lives outside of the transaction body, inside of the auxiliary_data. In the Babbage ledger era, you can see this in the wire spec (CDDL)
here
In particular, the metadata is ...
- 141
3
votes
Is there a publicly available Cardano API with pre-indexed blockchain data?
Yes, have a look at blockfrost.io an API as a service that allows users to interact with the Cardano blockchain and parts of its ecosystem.
- 7,189
3
votes
Accepted
Is the metadata limit on testnet transactions the same as mainnet?
The transaction metadata limit is the same on both networks, as they share the same ledger rules.
- 7,189
2
votes
Is there a publicly available Cardano API with pre-indexed blockchain data?
Alternatively you can also try a community driven project https://dandelion.link/
- 33
2
votes
Accepted
Store data in Tx Metadata on Cardano
Currently, transactions on Cardano are limited to a maximum of 16k so you probably wouldn't want to store the document directly onto the blockchain. That said, you might want to consider storing the ...
- 361
2
votes
Accepted
How can I make QR codes that work with wallets like nami?
The content of the QR code data will need to match what each wallet is expecting eg receiving address.
Each wallet will handle the data differently and could expect different things. Some might expect ...
2
votes
Accepted
Understanding this transaction - why isn't it spending the full amount?
I think there might be a misunderstanding in the fact that a transaction has several "outputs" - and those outputs are called "UTXO"'s (as long as they are unspent; hence "...
- 1,453
1
vote
Accepted
How to decode the datum stored across records in the tx_metadata table for a given tx
These values are the payment credentials of the address (or in case of a script its script hash).
You are probably looking for the payment_cred field of tx_out table in cardano-db-sync.
csyncdb=> ...
- 7,189
1
vote
What are the values in a Transaction Datum?
A guess:
The first set bytes (2486...) is the payment_cred key hash (pkh).
The second and third set bytes is a Cardano address that has been split.
The forth and fifth is also a Cardano address that ...
- 111
1
vote
Understanding this transaction - why isn't it spending the full amount?
In the first transaction (starting with 23141), there is a single input UTXO with three outputs - the first output (4.5 ADA) going to a non-staking address, the second and third outputs are going back ...
- 3,529
1
vote
How can I allow users to update a public array of data based on whether they own a token or not?
The transaction size is limited. So your list cannot grow too large. But assuming you stay within these constraints, you can achieve what you want by (i) parametrising your validator with a type that ...
- 1,484
1
vote
Metadata transactions / eUTOX TTL / locking up ADA
Seeing as you've solved the mystery around the pending state transactions I will try my best to answer questions 1 and 3.
Question 1: Inconsistent Lockup of UTXOs
Wallets use CIP 2 - Coin Selection ...
- 431
1
vote
Is there a 'Cardano Naming Service' available?
Adatar.me is a Project Catalyst funded project that fits the description.
- 1,527
1
vote
Accepted
How to retrieve an addresses transaction history inside a plutus contract
The current state of Plutus makes this impossible to do. Instead, you have to try and use a custom DB-sync server, and then construct the off-chain code in such a way that it passes the looked-up ...
- 942
1
vote
How to Remove Burned NFTs from SQL Output
You need to join all the assets for a policy to their transactions and join the transaction addresses to stake addresses. If the most recent transaction has a null stake address that means it's been ...
- 11
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