I will promotion bitcoin or crypto marketing and grow blockchain traffic for $2

I Will promote bitcoin website link on targeted people and sites. All genuine and real traffic through Sign Up can bring. I can prom0te your Bitcoin Links to the sites where there is more than 10 million real active members present. Get the following services and features with this Gig:- ☑ Get Worldwide Bitcoin Related Audience. ☑ Get Massive Promotion. ☑ 10 million real active Audience ☑ Get Social Do-Follow Backlink. ☑ 100% Manually Work, NO Software use. ☑ 100% Client satisfaction. ☑ Money Back Guarantee. So hurry up, Order now and get this Exclusive Service Feel free to contact me if you have any questions.

by: Hotem
Created: —
Category: Traffic
Viewed: 369


We bring your Press Releases to the Blockchain for $99

We offer the first Blockchain Press Release Service and publish your Press Releases like carved in Stone into the public Ethereum Blockchain. Why? Combat Fake News! Check source, track authenticity of Press Releases online. The Blockchain guarantees authenticity of content and quality of source and protects intellectual property by a unique and tamper-proof digital footprint. Blockchain Press Releases are for each Company, Editor, Author, Journalist or Blogger to Certificate content.

by: blockchainmg
Created: —
Category: Press Release
Viewed: 286


How to Start a Career in Blockchain Security [on hold]

I’m a Software Engineering Fresh Graduate, My Only knowledge is in Application Development. I wanted to start a career in Blockchain Security but i don’t know where to start from. I’m basically doing a career shift and i don’t have any background. can Someone explain to me how to start? What are the courses and certificates that i need? how long will it take me? and what is the best path i can follow to reach that goal? Thanks For Your Time.

Lastly, if I’m asking in the wrong site can someone tell me where i can submit my question?

Building blockchain application step-by-step for Hyperledger Sawtooth for total beginners

I have seen many beginner to advance articles on Ethereum blockchain development like Blockchain-as-a-Service Apps Using Ethereum and Quorum and Ethereum Blockchain Application Dev with Java and Web3J API

Below is good for Hyperledger but not Sawtooth https://coding-bootcamps.com/ultimate-guide-for-building-a-blockchain-supply-chain-using-hyperledger-fabric-and-composer.html

However, I am looking for similar articles for Hyperledger Sawtooth. Any suggestion? Online search gives me links mainly to documentation

Incentive for block creation in a private blockchain

Bitcoin miners are incentivized to produce valid blocks via a trasactional reward. But let’s say I wanted to implement blockchain as part of my private data system. Who would my miner’s be? I think could just have one automated miner (on a dedicated machine) with the proof-of-work difficulty being set to something very easy. But then I’m wondering, what’s the point? Is there anything to gain by using a blockchain like this?

In other words, can someone please give an example—no matter how crude—of how someone could use a private blockchain to log transactions, or whether such a thing has any practical benefit to the users?

How much data does it take to prove a given transaction exists on the blockchain?

As I understand the SVP protocol, a client can be reasonably certain that a transaction has been accepted on the blockchain if they know it is a member of a certain block, via the Merkle path, and a reasonable number of blocks have been mined on top of that block.

How much total data would that be, roughly? I guess if you were beginning with 0 knowledge, you would need all of the block headers, beginning from the genesis block? But once you are convinced you are looking at the head of the right chain, you could discard all of the ancient block headers, and just save a recent one as a trusted starting point to evaluate subsequent transactions?


I guess the premise of my question is faulty, as a fake transaction could always be embedded in a fake chain, if enough computing resources were available. So, there is no amount of data that insures a transaction is valid, without access to other information, e.g., what is the longest chain currently in existence.

A better question for my purposes would be how much would the electricity cost to create one fake block header at today’s difficulty level? Figuring that blockchain currently pays around $ 60K to mine one block, I would guess it must be in that order of magnitude, though smaller since we are removing the race condition.