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Questions tagged [anonymity]

Questions related to user anonymity. For questions related to data and smart contract privacy, use [tag:privacy].

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30 views

How do I perform a fully anonymous transaction using Stealth addresses in Aztec protocol?

I want to know how to make use of Aztec's stealth address protocol.
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1answer
33 views

Commit-Reveal Sequence Design

Let's cook up a scenario to ease understanding: We have a group of 5 people (addresses) who must vote on a question. The people can only vote True or False i.e. a boolean. The result of the vote ...
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1answer
30 views

Data integrity and privacy [closed]

I have a crowd sensing system where user after checking the task I provide for a location x, sends temperature values to the contract of that location. I've been trying to a way to implement data ...
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2answers
46 views

Auction contract privacy

I have an auction contract, where bidders bid with Ether then me (owner) select which offer is most suitable and thus this bidder is contract winner. Once the winner is selected, I send him data as a ...
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0answers
60 views

Simple mixer in ethereum

I have found this mixer proposal https://hackmd.io/@HWeNw8hNRimMm2m2GH56Cw/rJj9hEJTN?type=view I'm is interested in this topic, but from my point of view with a current ethereum state it won't work. ...
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1answer
25 views

Privacy concern

I have a smart contract where user submit data based on a task set by the owner, post doing so the owner in another contract offers this data to the highest bidder. Is it possible to ensure the ...
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1answer
49 views

User anonymity while submitting data in smart contract

I've written a smart contract, that is a crowd sensing system. Where post posting a task user view that task and if they have what I'm asking for/and meet the task requirements they submit certain ...
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0answers
51 views

Anonymous Coinbase Transaction

Is there any solution to have anonymous coinbase transaction in ethereum or other Cryptocurrency? Something like using coinjoin for coinbase transactions or something else.
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14 views

Encrypt and anonymize communication

I want to anonymize the communication between participants (communication = exchange of data, not currency). This should have the effect that two participants send messages to each others but now ...
2
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1answer
237 views

How to implement Ethereum mixing (or coin tumbling) to preserve anonymity in smart contracts?

According to this answer: (https://ethereum.stackexchange.com/a/62694/23024) one of the approaches to anonymize users in smart contracts is: "writing a smart contract which accepts Ether ...
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1answer
438 views

Anonymity preserving approaches in smart contracts?

What approaches are practicable to enhance anonymity in smart contracts? P.S.1: Some proposals have been proposed such as Hawk or ZoE project ;however, I am looking for other approaches. P.S.2 : ...
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2answers
46 views

Is there any way to fund a new account privately via a randomising pool?

It isn't currently possible to create a new HD wallet account and privately fund it, is it? I'm aware of this thread, but I'm not asking about SNARKs. Instead, I'm curious if there's any way to send ...
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1answer
718 views

Is it logical to use “Proof-of-Authority” for a “public” blockchain?

According parity.io website: Proof-of-Authority is a replacement for Proof-of-Work, which can be used for private chain setups. And also: The chain has to be signed off by the majority of ...
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1answer
365 views

How to use the zksnarks capability of Ethereum?

Simple question but I couldn’t find the answer anywhere… How to use the zksnarks capability of Ethereum in order to perform fully Anonymous sending of Eter from one wallet to an other one ?
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2answers
237 views

Is there any anonymity in Proof-of-Authority?

According to the following article, Proof_of_Authority (PoA) is a modified form of Proof_of_stake (PoS) where instead of stake with the monetary value, a validator’s identity performs the role ...
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0answers
111 views

How to fund Ethereum address relatively anonymously? (breaking a link with an already established address)

I want to deploy smart contract. I just don't want people inspecting the code on Etherscan to see what crappy ICOs I've sent my ETH back in 2017... Some options coming to mind: use Shapeshift ...
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4answers
222 views

Is it possible to obscure the owner of a non-fungible token?

Basically, I'd like to have unique records which can be transferred between parties without anyone knowing who owns a particular record until a transfer occurs, at which time only the recipient can ...
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2answers
342 views

Can variables be read by miners? [duplicate]

Suppose I have an array of addresses which I append to somewhere in the contract. Do the miners (or anyone else) have a way of figuring out what the variables holds in terms of data? In other words, ...
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1answer
315 views

How are some addresses known to belong to certain exchanges?

I searched for a Ethereum address into etherscan.io and it showed me that it was a Poloniex address. That address was the receiving address of a wallet I created on Poloniex. How did etherscan know it ...
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3answers
622 views

How to make a token private

How can I create a smart contract that has a function that receives an input ( either eth or another erc20 token ) and sends it to a specified address without revealing who sent it? Basically making ...
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1answer
1k views

Tracing wallet IP address

I read about this privacy attack to the BTC network : https://bitcoin.stackexchange.com/questions/193/how-do-i-see-the-ip-address-of-a-bitcoin-transaction It is based on network observation from a ...
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0answers
413 views

Is it possible to make ethereum private by default like how monero has it?

How would ethereum be made private and anonymous by default like how monero has it? Is it possible to turn an token into a fully private anonymous token by default?
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1answer
236 views

ENS: Guessing bids amounts and protecting bid anonymity

Regarding adding ETH for extra anonymity on an ENS bid, @Arachnid said: Disguising the exact amount makes it more difficult for people who have guessed what name you are bidding on to also guess ...
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1answer
248 views

Blockchain use case – Trying to understand provenance tracking

I am trying to understand how blockchain would be helpful in provenance tracking of goods. Example: Company X is using blockchain technology to import pork into USA. Let us assume there are many ...
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3answers
4k views

Is there any way to hide a transaction?

Is there any way to hide a transaction on the Ethereum blockchain? Some blockchain have protocols that implement this by default, like Monero and Zcash. Is something similar possible on Ethereum?
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0answers
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Will forthcoming ability to make transactions private hide gas usage and mining information?

I understand that people are working on allowing for more private transactions on the public Ethereum mainnet. This would involve hiding (at the very least) the from, to, value and probably input ...
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2answers
213 views

Confidential value transfers

Is there currently any way to do confidential transactions with Ethereum for a custom token? If not, is there any work/research being done on how this might be possible?
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2answers
228 views

How can we find “the DAO” attacker on 17 June 2016?

This question is about the level of anonymity in the system. I would like to know how anonymous one can be at this ecosystem? In other words, is it possible to track down an individual responsible ...
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3answers
11k views

Is there any Ether mixer / tumbler available?

Quick checking around there are exactly two references to an Ether Mixer - this non functioning and here (r/ethereum) 24 days ago. Unless I am missing something how can I hide the source of an ETH ...
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4answers
1k views

With a ring signature mixer, will Ethereum transactions be completely anonymous?

I was reading the Serenity PoC2. The part quoted below grabbed my attention. Does it imply full anonymity for Ethereum transactions should I decide to use the ring signature mixer? Ring signature ...
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1answer
3k views

How anonymous are Ether transactions?

I read some sources that say transactions are anonymous, some that say they are semi-anonymous, and some that say they are not anonymous at all. In what ways are the transactions anonymous and in what ...
8
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1answer
2k views

Can one use ethereum as a client over Tor?

Does ethereum work when there is only TCP available? Can one use ethereum as a client over Tor? It does not work for me. Using Whonix. So running the traffic over Tor is not an issue. Blockchain ...
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4answers
1k views

How to increase my privacy on Ether accounts?

What would be the best way, if any, that one could change their address/account in order to make themselves unknown or hard to identify by people they traded with? More specifically, if I send ETH to ...
8
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1answer
652 views

Are linkable ring signatures available in Ethereum?

Are transactions with ring signatures available in Ethereum? There should be as anonymity/fungibility is important. Also, I think Vitalk Buterin mentioned it may be possible to implement an EVM ...
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1answer
775 views

Is it possible to achieve anonymous mixing through the Ethereum protocol?

Are any developers working on anonymous mixing? Is it achievable through the development of either smart contracts or dapps? Is information leakage reduced or eliminated?