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Dave

@ItsDave_ADA25,886 subscribers

Cardano SPO - Search for DAVE stake pool. Cardano DRep - $drep@itsdave_ada I rarely check DM'S.

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Self Disclosure Privacy using ZK Proofs, Demonstrated & Executed Directly on Cardano Preview I built a demo where a customer buys a beer and proves they are 18 or over, without ever showing their ID. No name. No birth year. No photo. Just maths. Two beers were ordered. Two separate transactions. The same proof, reused, no re-verification needed. The blockchain recorded "age verified" both times. That's all it knows. No name. No address. No date of birth. No photo. No personal data of any kind. This runs entirely and directly on Cardano. No sidechains. No L2s. No off-chain verification. The ZK proof is checked by the Plutus V3 validator itself, on-chain, using Groth16. And this isn't just for bars, it works for shops, website signups, any age-restricted service. One credential, reused anywhere. Self disclosure means you choose what to share, and in this case, the customer chose to share nothing except "yes, I'm old enough, give me a nice cold beer." 🍺 Massive shout out to everybody involved in the below! Aiken smart contract language on Cardano (please don't judge my Aiken... I know it's bad 😂) ak-381 by Modulo-P, Groth16 SNARK verification library for BLS12-381 on Aiken Circom + snarkjs, ZK circuit design and proof generation MeshSDK, transaction building and wallet management Blockfrost, blockchain data provider A basic demo to set the stage for further privacy enhancements that can occur directly on Cardano. Self disclosure privacy on Cardano Cheers Cardano 🍻🍻 Beer 1 Beer 2

Dave

21,442 views • 3 months ago

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I have been building a visualisation platform that maps activity across Cardano. The objective is simple. Transparency. When information is clear and accessible it strengthens the entire ecosystem. The platform is already showing how powerful that visibility can be and it continues to improve as more data is integrated. I have successfully traced the direction of genesis funds across the blockchain end to end. The focus of the work however has increasingly turned toward Emurgo and will continue to target Emurgo.. Whether I release the tool publicly is still something I am considering carefully. In the past I built AI systems over Cardano data and chose not to release them. The reason was simple. I did not want something powerful to be turned into a weapon that hunts for minor negatives inside what is otherwise one of the most important technological and innovative blockchains built in this space, and a result of years of hard work. I have no interest in fuelling drama. My intention has always been to present Cardano for what it actually is. A blockchain built through years of research and engineering, driven by the founding entities IOHK and the Cardano Foundation, and supported by people who genuinely care about the system including Charles and many others who have given years of effort to build it. That remains true regardless of some recent comments directed toward me in spaces. Those were disappointing, and did actually upset me being completely honest, also they missed the wider context of what I have been doing and I feel discounted my care for Cardano. However transparency works both ways. I will not ignore behaviour that undermines the principles Cardano governance is supposed to protect. Emurgo, a founding entity, is accumulating a rapidly increasing share of voting power through Yoroi DRep delegations. Many users appear completely unaware that this is happening. The interface suggests things along the lines of gaining rewards by delegating voting power to Yoroi as a DRep. What many users do not realise is that they are delegating governance influence directly to the same organisation that operates the wallet ,and worst still think they need to delegate to Yoroi to get their ADA rewards! I have received countless direct messages from affected users who did not understand what they had delegated. In several cases language barriers appear to make the situation worse, particularly for users outside the English speaking community. At present Yoroi and Emurgo, which are effectively the same entity in this context, represent roughly 17 percent of all voting power. That share is rising quickly. Based on the recent rate of growth it is not unreasonable to see this exceeding 50 percent within a few years if nothing changes. Governance concentration on that scale is not healthy for a system designed around distributed decision making. Cardano’s credibility depends on users understanding where their voting power sits and being able to move it freely to representatives who actually reflect their interests. The goal of the platform was never to show how much a founding entity spent or to cause drama. The goal was to show the decisions a founding entity made and how those decisions shaped the blockchain in an era of governance

Dave

16,880 views • 3 months ago

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Ouroboros "short" Leios Protoyping simulation & visualisation work in progress demonstrated by Duncan Coutts. Full P2P network running Leios Visualisation. You can see 100 different nodes and messages flowing between them all, with representation of Input Blocks (Top left, Endorsement Blocks (20 seconds In these increment), Votes (20 seconds in these increment as the pipeline hits a vote stage) You can see the votes continue to burst at roughly 20 seconds, input blocks also increase, the smoothness of message flows to reduce these bursts is something Duncan details they are working on to improve as-well as resource usage. Input Blocks (IB) - These blocks contain the raw transaction data submitted by users to the blockchain. Endorsement Blocks (EB) - These blocks reference multiple Input Blocks and are used by nodes to validate and vote on the readiness of transactions for inclusion in the blockchain. Votes- Nodes cast votes to achieve consensus on the state of the ledger, enhancing the speed of transaction finality. I believe this is completely off-chain so does not incur transaction costs (Someone keep me honest please) Keep an eye on the diffusion latency chart, as Duncan mentions this is very important, this refers more to time taken for propagation of information across the network I believe. This was an extract from a larger demonstration, really exciting, massive credit to the team working on this. It's going to be extremely impactful to Cardano and I will share as much as I can about it, I really like seeing these visualisations especially during a prototyping stage. What I find interesting is that the visualisation vote count is so much it slows down the browser rendering. Great work! web3innovationnerds & Duncan Coutts what a demonstration that was., keep them coming!

Dave

57,107 views • 1 year ago

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