Questions tagged [blockchain]

Questions about blockchain in general, when other tags cannot quite capture the essence of the question.

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11
votes
2answers
365 views

Why is PoS much faster than PoW?

My understanding of the topic is this: Proof-of-Work Miners compete with their hashrate for the right to publish a block. Proof-of-Stake Validators are randomly elected to validate a block. Why is ...
11
votes
1answer
99 views

What enables the Cardano blockchain to be capable of storing so much information?

After the Africa Special it was announced that DIDs and academic records of 5 million+ people will now be stored in the Cardano blockchain and this is set up to scale for massive adoption. Thus it ...
11
votes
1answer
50 views

How does the hardfork combinator work?

Naïvely one would think it's a mere version tag on the block. However, most other chains do not include a combinator. How does it work at the low level and why only Cardano has it?
9
votes
3answers
290 views

What is the maximum number of contracts Cardano can store?

I see Ethereum (ETH) can store 2256 smart contracts, so is there any description about this for Cardano, i.e. how many contracts can Cardano store?
9
votes
3answers
777 views

How big is the Cardano blockchain (now and in the future)?

This may sound a naively simple question, but... How big is the blockchian today? How big is it likely to become in future? I note that Daedalus' state directory on my machine is currently ~10.3G. ...
9
votes
2answers
301 views

What are the long term micro-transaction plans for Cardano?

I've seen the broader implications of throughput that layer 2 solutions like Hydra will provide for the ecosystem. But I'm curious about how the Cardano ecosystem will provide cost effective solutions ...
9
votes
1answer
70 views

How does Cardano compare with other blockchains in terms of being eco-friendly?

It is pretty common knowledge now that Bitcoin is extremely energy intensive to mine, and that Cardano is several orders of magnitude less intensive. However, there are other cryptocurrencies that are ...
8
votes
5answers
180 views

Will Hydra (or anything else) reduce transaction times for Cardano in the future?

It's been brought to my attention that Hydra will offer all the scaling necessary but will it also make the blockchain faster? Is it likely Cardano will ever reach an under 10 second time which could ...
7
votes
6answers
740 views

What happens if someone gets my seed phrase?

If someone happens to get my seed phrase (off a paper I wrote it on) can they restore my Daedalus wallet on another machine and take my ADA?
7
votes
1answer
81 views

Are digital assets stored on personal devices or on the blockchain?

I keep my ADA on Daedalus. I keep my seed phrase on a piece of paper, stored somewhere at home. Say the computer where I have Daedalus suddenly dies tomorrow, and becomes inaccessible and irreparable. ...
7
votes
1answer
71 views

How are the key parameters that control Cardano governed?

I am looking to understand the 7 special keys that control all the parameters for cardano. How it's controlled, who gets to control it, and what each parameter means.
6
votes
3answers
199 views

Is it possible to reuse the blockchain for both relay and block producing nodes?

While setting up Cardano Stake Pool, we need to have at least 2 nodes: one for Relay, another for Block Producing (BP). This Relay node downloads the whole blockchain, and the BP Node will connect ...
6
votes
3answers
233 views

Is there anyway to cancel payment or revert a payment

Recently I came across a situation: a payment was executed by a customer on a site but then the consumer changed his mind. What levels of transaction revert of such activity can be done? e.g. X ...
6
votes
1answer
44 views

A summary on the goal of Cardano

On the website it's mentioned that: Cardano is a blockchain platform for changemakers, innovators, and visionaries, with the tools and technologies required to create possibility for the many, as ...
5
votes
2answers
173 views

How to publish a smart contract on the blockchain?

Let's say I have a Plutus contract written up. How do I actually submit it to the blockchain and start interacting with it?
5
votes
1answer
61 views

How are staking rewards stored?

In another question Andrew Westberg mentions that staking rewards are not stored as UTxOs to save space on the blockchain. My question is: how exactly are those rewards associated with one's stake ...
5
votes
3answers
226 views

What are technical differences in smart contract execution on Cardano in comparison to Ethereum?

In my understanding, smart contracts on Cardano are always provided to the blockchain via a transaction and there is no code that is stored at the blockchain, but just a hash (the public key address). ...
5
votes
1answer
73 views

How can we verify the 45B ada cap cannot be exceeded?

Is there a particular place in code that forbids exceeding this market cap? Should we be constantly keeping an eye on it after IOHK hands off the project to the community? Or is it somehow imbued in ...
4
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2answers
252 views

What is the size limit of transaction's metadata?

Is there a size limit on transaction metadata? If there is a limit, is it varying or fixed size?
4
votes
1answer
97 views

Are there plans to keep the blockchain/node size small enough to maintain decentralisation?

One issue bitcoiners like to mention is node size in relation to decentralisation. Currently we are at like 10gb, I saw that the max growth is apparently 100gb a year. Are there any plans for reducing ...
4
votes
1answer
66 views

what is the ADA (Cardano crypto-currency) SDK?

I'am very new to the blockchain community and I have a new project that i'am starting to work on using the Cardano Blockchain and its crypto ADA. I stumbeled upon the name "ADA SDK" and I ...
4
votes
1answer
116 views

Is there a Ganache-like in Cardano?

Currently, I have been playing around with the Cardano Playground and I was wondering if there is an existing tool already present where I can personally run a Cardano blockchain like Ganache of ...
4
votes
1answer
146 views

How to check using CLI that a token is a NFT?

One can check with online tools (described here) if a token is an NFT. How the same thing can be done using CLI tools (in some sort of a script)?
3
votes
4answers
388 views

How to verify data signed with nami wallet in a node backend?

I am playing around with the nami cardano wallet. I am able to link the wallet in the frontend and now want to link it to the backend. First action the frontend sends an auth request with the cardano ...
3
votes
3answers
144 views

Could BTC migrate to Cardano?

According to research by the University of Cambridge, the Bitcoin network currently consumes around 100 terawatt-hours of electricity annually, enough to run a country such as Sweden. The second ...
3
votes
1answer
71 views

Any update on RINA?

Recursive Interconnect Network Architecture was being discussed for Cardano. Is the networking team or anyone looking into this?
3
votes
1answer
57 views

Identifying node locations by region

I want to operate stake pool nodes in underserved areas. My cloud provider automatically chooses the cheapest datacenter nearest to me. But I am willing to pay more to deploy to data centers in ...
3
votes
1answer
88 views

Historic and Real-Time Data on Cardano Blockchain in csv or json format

I am conducting some research on Cardano and would like to know if there's any historic and real-time information (on daily basis or more granular) for the below area in json or csv format: (1) Number ...
2
votes
2answers
152 views

How to move Daedalus's blockchain data folder out of AppData?

I'm a newbie with Cardano. Anyone can tell me how to move the Daedalus blockchain data folder from AppData to another drive? I want to keep my C-drive's space by moving DB to another drive.
2
votes
2answers
33 views

How can I get access to the epoch nonce?

I see the Cardano epoch nonce being used as a source of randomness. How can a non-technical person verify if the nonce used is actually legitimate? Is there a source where I can find the nonce for a ...
2
votes
1answer
140 views

Is there any platform to read the Mempool?

I want to see the queued transactions in the mempool, where can I see that? Thank you.
2
votes
1answer
101 views

Mainnet – How to fix a frozen DB syncing?

I've been trying to sync with the Cardano blockchain in order to use CLI wallet on macOS Big Sur 11.6. But syncing is frozen at epoch 289 on block 6,236,059. cardano-cli query tip --mainnet { &...
2
votes
1answer
32 views

Researching potential smart contract use in streamlining spare parts supply chain

I'm researching the potential for blockchain smart contracts to be utilized for streamlining order fulfillment against requirements contracts; and possibly other contracting/acquisition uses. By way ...
2
votes
0answers
18 views

Is there a "Moore's law" type function, that has been fitted to the Cardano blockchain size as a function of time?

In technology, when something is growing quickly and monotonically over time, we often fit the data over time to a curve and make claims like "the doubling time of the number of transistors in a ...
1
vote
2answers
91 views

How to permanently persist an arbitrary hash string in the blockchain?

I have an interesting use case for permanently storing an arbitrary hash string somewhere "reliable" publicly and, very important, with a trustworthy timestamp. For me, this sounds like a ...
1
vote
3answers
86 views

how can i show my minted NFT images on cardano testnet

this my minted nft address https://testnet.cardanoscan.io/transaction/38415ba47ba757b5ccb7240962fc064be56850b19f820e9a837aeed6e56e8081?tab=utxo Now i wants to show these minted NFT Images to any ...
1
vote
2answers
68 views

Error while decoding the protocol parameters

This is occurring on testnet. Trying to calculate a fee for a transaction that will include metada. Here's the script: cardano-cli transaction calculate-min-fee \ --tx-body-file tx.draft \ --...
1
vote
0answers
24 views

Is there an established pathway yet for someone with a purely mathematical background to become a fully equipped Cardano developer? If so, what is it?

Title asks my question. I have a mathematics degree (undergrad) and have dipped a toe in the water of software development in Python, but have no clue where the optimal place to start to become an ...
0
votes
1answer
28 views

Advantages and data load sharing of blockchain tech for consumer applications

I want to have an application developped (for on pc) and actually I have several questions about blockchain advantages for this purpose and more. My blockchain of preference is naturally, Cardano. I'm ...
0
votes
2answers
27 views

Build transaction script ERROR in cardano .Not support the policyid with tokenname

this is my transaction build script cardano-cli transaction build --mainnet --alonzo-era --tx-in $txhash#$txix --tx-out $address+$output+"$tokenamount $policyid.$tokenname" --change-...
0
votes
0answers
17 views

Forking and costs of ones own blockchain

This is hypothetical and not what I will do. But it will help with some financial calculations. Could anyine give me an estimation of both how many developers to fork cardano and hydra as it looks ...
0
votes
1answer
31 views

Validating transactions

Original question: When 51% or more of consensus participants validate any transaction for recording on-chain, against what evidence are they validating? Original Answer: Each transaction is broadcast,...
0
votes
1answer
39 views

Data and metadata protection

Original question: Where is confidential data held and how is access to it controlled? response: It depends on the context, but if you include metadata in a transaction, those metadata will be ...
0
votes
1answer
38 views

Questions about data storage and unique identifiers

Hi there I have a number of questions i hope you can help answer: Who binds the public key to the real-world identity and the identifier used for transactions? Where is confidential data held and how ...