The hash of an ECDSA key-pair's public component. Knowledge of this value allows a user to send Bitcoins to another person over the network.

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12 views

Getting all transactions that ever occurred for a bitcoin address

I know you can use various APIs to get the balance for a given bitcoin address, but is there a way to total all the bitcoin that were ever received at a given address? A so-called "transaction ...
2
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0answers
29 views

How can one prove the ownership of an address?

Is there a way to prove the ownership of an address without spending bitcoins? I Imagine something like signing some given data with the private key - how much would that weaken the security of the ...
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2answers
43 views

Bitcoin purchases by country

I'm interested in getting data on bitcoin adoption by country. Is there a way of mapping bitcoin addresses to countries of origination?
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0answers
9 views

How is a NXT account address generated? Why do we need to send out a transaction in NXT to secure the address?

I'm setting up an account and noticed: The recipient account is an unknown account, meaning it has never had an incoming or outgoing transaction. To submit this request you must supply the recipient ...
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1answer
19 views

Practical interpersonal address exchange

How can addresses be exchanged practically & efficiently between two users? Visually copying & keying them is impractical & faulty.
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0answers
21 views

Deterministic Key Generation: prove that address is in a sequence of your original seed

Lets say that someone wanted to prove they owned some metadata without revealing who they were. For instance, lets say they needed to prove they had owned a contract but that contract was in an ...
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2answers
17 views

Convert an lower-cased address to a properly capitalized address?

Is it possible to take a lower-cased address like 1dice8emzmqkvrge4qc9buff9px3xaydp and convert it to the properly capitalized address of 1dice8EMZmqKvrGE4Qc9bUFf9PX3xaYDp ? I've looked around and ...
0
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1answer
24 views

multiple parties to sign a transaction before being broadcast (or after, but either way be associated with)

Lets say someone was writing a transaction solely to denote the existence of something, or a timestamp, or writing something in OP_RETURN Could that transaction be signed by other addresses, kind of ...
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1answer
86 views

What is a bitcoin wallet?

I do not understand how addresses and wallets are related. I see that you are advised to generate an address for every transaction and, furthermore, use (multi-in multi-out) tumblers to maintain ...
2
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0answers
20 views

Key Pools and best practices

I'm wondering about what the best practices are around generating and maintaining key pools for a wallet. What is the maximum number of keys/addresses that can be created for a single wallet? ...
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2answers
56 views

What is bitcoin ID?

An answer on this page says that neither bitcoins nor satoshis have any identity. I then read that You may consider a bitcoin to be "less-anonymous" when an attacker could feasibly find the ...
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2answers
17 views

Donation wallet address

I read that wallet/account is not the same as bitcoin address. The address can be used only for single transaction. How do you receive donations on your address? Are wallet addresses unique for the ...
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0answers
31 views

Is there an API that provides this functionality?

Sorry I couldn't make my title more descriptive, but it might be a little long winded. What I need is the following, and preferably an API that can support the popular crypto currencies, not just ...
2
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1answer
48 views

NXT single address per user vs bitcoin single address per transaction

In bitcoin, the anonymity is ensured by creating a new address for each transaction and by associating this address with a wallet. As far as I understand, with NXT, you use your account (calculated by ...
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1answer
27 views

Colored coin with stealth addresses

Is it possible to use colored coins with stealth addresses? My main consideration being that coloring a unit of cryptocurrency requires being able to keep track of its exact location at all times ...
1
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0answers
40 views

How to get bitcoin address from the pubkey_hash using bitcoin-abe or something else?

I'm using: https://github.com/bitcoin-abe/bitcoin-abe to import the blockchain into a mysql DB it is almost done after 5 days. So I started looking at the data and didn't see any addresses. I know the ...
1
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1answer
33 views

Compressed keys default for brainwallet?

I'm somewhat confused re compressed addresses... Assuming I were to make a brainwallet using "correct horse battery staple" as my passphrase gives 1JwSSubhmg6iPtRjtyqhUYYH7bZg3Lfy1T (uncompressed ...
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1answer
52 views

Can you help me fix this address?

I just got this address: 1a8LDh3qtCdMSAgRXzMr4zB8w1EG4h1Xi, but the checksum doesn't validate. Can someone help me fix it by changing some characters that look/sound similar?
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1answer
40 views

Bash BTC and LTC address generator

Do you know any bash script or C simple program to generate btc and ltc addresses? I need to generate address while in recovery mode on osx or on a linux onthefly. But I cannot find such a thing on ...
2
votes
2answers
61 views

Is it possible to check if a bitcoin address “belongs to” a master public key from a deterministic wallet?

Let's say I have a Master Public Key (MPK) and have a derived some addresses from it. How can I check later if a given address was derived from my MPK?
2
votes
1answer
65 views

Advanced Bitcoin Transactions

Let's say that 7 users want to spend money from a Bitcoin multisig address. The approval of funds from this address requires the signatures of A (the leader), either B or C (two managers), and 2 of 4 ...
2
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1answer
22 views

On multibit how do I update my sending address? [closed]

I have bitcoin in my transactions but it does not appear in my wallet. It says updates stopped
1
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1answer
59 views

Why is it possible to have multiples addresses in an output of a transaction?

I am trying to load the blockchain into a MySQL database by using the data gathered from RPC calls to bitcoind. I am wondering why the "addresses" key within the "vout" array of a transaction is ...
1
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1answer
12 views

Bitcoin wiki docs, account or address?

listtransactions [account] [count=10] [from=0] Returns up to [count] most recent transactions skipping the first [from] transactions for account [account]. If [account] not provided it'll ...
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1answer
73 views

Is it safe to send to my own address from my wallet?

I have a wallet.dat which has so many addresses in it. Like 1, 2, 3, 4, ....., 1234324234 addresses. (Each number is address) I backed up original wallet.dat, and I want to use this light wallet.dat ...
4
votes
2answers
86 views

Decentralized democratic voting [duplicate]

Has the fundamental problem in cryptovoting, one person, one vote, in a completely decentralized or blockchain centric manner been solved? In other words, how can votes be allocated in a ...
2
votes
1answer
45 views

How to get the Input Address from vin where only a txid is given (Insight-Api)

I like to find the Input Address and Amount for a vin like this: "vin": [ { "txid": "e3f0e88ce224d342a0189c1b9d2fd488d8bda2f303dbe1e1dbbaa5f51d9f4a53", "vout": 1, ...
1
vote
1answer
23 views

How to distinguish addresses currencies apart on php [closed]

I need depending on the address to assign a value of the transaction. Both at the level of php distinguish btc ltc from ppc?
2
votes
2answers
129 views

How does the bitcoin network disallow people generating a key pair already generated? [duplicate]

Is it possible to generate a key pair that has already been generated? Wouldn't it collide with an existing value? I assume it is mathematically very unlikely, but odds higher than 0 are still ...
1
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1answer
66 views

Why does bitcoin use public keys as pseudonyms?

Why does bitcoin use public keys as pseudonyms? Is there any reason for that? What are the advantages of using public key as the pseudonyms? Highly appreciate if someone can give me an answer.
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1answer
36 views

Do receiving addresses expire on Multibit?

Okay so I have tried Resetting Blockchain and Transactions plenty of times. The only thing is I used an old receiving address that I used about 2 months ago. Do these addresses expire? Can they only ...
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2answers
139 views

Generating Ripple address

I am trying to recreate the Ripple address from Account Family wiki page and I am having some problems. I have the private generator of ...
2
votes
1answer
63 views

Genenerate address offline, but blockchain knows about my address

I generate new address in client. I hear that blockchain doesn't know about it. Blockchain will know about it when I use this address for transaction. My example: I generate this address(offline): ...
8
votes
2answers
617 views

Can two private keys generate the same (public) Bitcoin address?

I know that private key is generated randomly by wallet. Is it possible that wallet generate the same address which is used in Bitcoin? In other words: Given two private keys ka ≠ kb, is it ...
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3answers
93 views

Is it possible generate three public key( address ) by only one private key?

I hear that each address has one private key. Is it possible generate three public key address by only one private key?
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0answers
27 views

How many addresses are in blockchain? [duplicate]

I understand that client like bitcoin-qt can generate addresses indefinitely, but only true or active addresses are in blockchain. How many addresses are in blockchain? Is somewhere statistics data ...
1
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1answer
128 views

What is the maximum of receive addresses the default wallet can handle?

I guess there is no limit. But on tests, what is the maximum before the bitcoind start to slow down in a specific machine?
0
votes
2answers
238 views

How does cryptsy.com currency trading works?

I am using cryptsy and i am unclear how cryptsy works, At first i deposited dogecoin to newly generated address and then I made the sell offer for DOGE/LTC, now i am having some LTC but i don't see ...
0
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3answers
125 views

Getting sender address, python

Getting senders account Say we got txid by listtransactions: "txid" : "2ca54b92338e52bbb16562dd7a91e8670d9362bb255e21fb568acc13e732b6b7" then getrawtransaction ...
0
votes
1answer
42 views

Is it possible to retrieve bitcoin address?

I have Bitcoin daemon running in Amazon AMI, i have some balance in my bitcoin wallet, suppose i re-install os/daemon, is it possible to retrieve those balance what happened to that bitcoin ...
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1answer
52 views

CoinPunk questions with private base58 encoded private keys?

I am extemely sorry if this not the right place... but thought I could maybe get some pointers? Well, basically, if you look at this: ...
2
votes
1answer
63 views

What is BIP32-style derivation?

I am reading the technical "specification" for stealth addresses, available here. The core idea is described in the following paragraph: Using Elliptic curve Diffie-Hellman (ECDH) we can generate ...
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2answers
62 views

What is the best method of getting the originating address of Bitcoin transaction?

As far as I see there are currently two methods of getting the sender's address in a Bitcoin transaction: Look up the input transaction and read the corresponding output address there (like this: ...
1
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1answer
100 views

Which wallet application lets you send to multiple output addresses with just 1 fee?

Which wallet applications lets you send to multiple addresses from one output? I'm looking to build a physical bitcoin kiosk faucet and was looking to see how I would avoid miner fees if i combined ...
2
votes
2answers
45 views

Generating addresses on the fly or pre-generate and store public key?

When running a service that needed a bitcoin address, would it be better to generate a new address to use at that moment and store the private key on your server, or would it be better to pre-generate ...
7
votes
2answers
366 views

Is it possible for someone to verify that a wallet is theirs wallet, without providing their private key?

I need to know with 100% certainty that someone can tell me "this is my wallet" and prove it to me. I could of course simply get their private key/brainwallet phrase, is there any other way to do it? ...
2
votes
1answer
71 views

Is change of Bitcoin address of an account possible?

I have multiple Bitcoin addresses in my Bitcoin Daemon, Which address will be used for receive transaction Can i change my default account address(mentioned in 1) to new one
2
votes
1answer
151 views

Do electrum fully support Hierarchical Deterministic Wallets?

I'm curious if electrum fully support Hierarchical Deterministic Wallets (BIP32). I have seen in source code that some part of implementation is done. But there are also as I think some electrum ...
1
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1answer
75 views

multibit balances wrong, not correct for any individual address

In my multibit wallet, it reports X bitcoins. But no address in that wallet contains exactly X bitcoin, and the total reported amount should be greater than X. The reason this is stranger than ...
2
votes
1answer
77 views

Remove address sub from blockchain websocket API

According to the docs, Blockchain.info provides a websocket API that streams a few things: All unconfirmed transactions using "op: unconfirmed_sub" New blocks & the data they contain using "op: ...