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    [Dev] Private Blockchain Addresses (Dark Blockchain)

    Technical Development
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    • wrapper
      wrapper Moderators last edited by

      Cheers Calem - interesting read,

      I agree with him ([email protected]) in his critique of stealth addresses. He certainly has thought about the subject from a technical point of view.

      https://medium.com/@octskyward/ecdh-in-the-payment-protocol-cb2f81962c1b

      I’d be interested to see how quickly he can trash private addresses. Although, PAs do seem to get over many of the problems he sees with the very similar “large public key” method of privacy.

      e.g. being able to index the address, so the wallet can find relevant transactions. Also, where one option is to make the private addresses indistinguishable from normal transaction addresses.

      As you know, I’ve outlined the idea in the best detail I can and the next step would be to some test coding to see if it at all viable.

      I’m just getting round to learning more about the history and state of multi-signature wallets and BIP’s. Although that is to look at whether we can change the multisignature address start values, doing that work would get us more up to speed on how private addresses might be implemented.

      I sent Mike an email to see what he thinks.

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      • ?
        A Former User last edited by

        The main thing we need with private addreses etc, is that there needs to be an Audit Key that can be used to give to tax agents accountants or tax agencies/gov etc.

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        • ?
          A Former User last edited by

          Just thought I would mention, on the opposite end of the spectrum here…

          https://github.com/opennamesystem/openname-directory
          https://openname.org/about

          OVERVIEW

          The Openname System (ONS) is a protocol that extends DNS by supporting the registration and resolution of:

          1. user handles on the blockchain (DNS for people)
          2. domains on the blockchain (decentralized DNS)

          …all with full DNS backwards-compatibility.
          ONS = ICANN DNS + blockchain handles + blockchain domains

          ONS currently uses namecoin as a key-value store but the system is blockchain-agnostic.

          I don’t want to add yet another project, but this is something that we need to sort out in time as well.

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          • wrapper
            wrapper Moderators last edited by

            Develop a wallet option to have individual addresses for each transaction.

            Mike says he thinks you can’t encrypt the address, in order to make each transaction individual, (he doesn’t explain why), but that we could use the same idea to make transactions more private, without encryption.

            We could just do the “make it easier to have individual addresses” part of private addresses white paper. I can’t quite see how this would work, as my mechanism was to have an extra layer, that the receiver and sender would have access to, via their keys, to show the link behind the encrypted address.

            As with private addresses, if each transaction uses individual addresses then there is much less information leaked. This would make each transaction more like cash, as Satoshi envisaged. It would depend how the individual address could be made and decoded by the wallet whether it would remove the need for a cryptographer to be involved with the software development to make any progress.

            https://medium.com/@octskyward/ecdh-in-the-payment-protocol-cb2f81962c1b

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            • ?
              A Former User last edited by

              Is this what Bush is currently working on?

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              • lizhi
                lizhi last edited by

                Yes, Stealth Address start , me and Bush.

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                • lizhi
                  lizhi last edited by

                  Stealth Address will was created in wallet, The use of it in much the same way as normal. Stealth Address ,The length of more than 35 .

                  stealth1.png

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                  • lizhi
                    lizhi last edited by

                    after my pool confirm a stealth transaction, but I find a problem , I can not receive coin.
                    I check logfile.
                    FindStealthTransactions show a error “StealthSecret failed” in wallet.cpp,

                    StealthSecret(sScan, vchEphemPK, it->spend_pubkey, sShared, pkExtracted)
                    

                    StealthSecret show a error “StealthSecret(): Q EC_POINT_bn2point failed” in stealth.cpp

                    if (!(Q = EC_POINT_bn2point(ecgrp, bnQ, NULL, bnCtx))) 
                    

                    my a stealth transaction on blockchain.
                    http://block.ftc-c.com/tx/137455e27de1c7b3302c3b0c462fb0d904a831339aebf468e6e85c224362f51b
                    Block number:556535

                    SX address f5QuGW2S8TvSqszejNxxTATHh4AgJC2VVvMf5Lc2tk6uR4k3F361kwM8oiLecHT4z4q7qmUgnUE47HsqpGX6uZnUghvgLN7iiSpeA7

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                    • ?
                      A Former User last edited by

                      Bugger…

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                      • lizhi
                        lizhi last edited by

                        Yes, I have fixed the bugger. I develop Stealth Address successful.

                        Look , This is first stealth transaction in blockchain ,It is at 566321 (Mainchain)

                        http://block.ftc-c.com/tx/85568ae1dacfdc6730b0d2ddeb2c4d7d07b0ac702e6d9a7f408293e2cd628d57

                        MyStealth Address is f5QuGW2S8TvSqszejNxxTATHh4AgJC2VVvMf5Lc2tk6uR4k3F361kwM8oiLecHT4z4q7qmUgnUE47HsqpGX6uZnUghvgLN7iiSpeA7

                        sx2.png

                        sx1.png

                        I send 0.01FTC to my Stealth Address ,then I receive them successful. :)

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                        • ?
                          A Former User last edited by

                          It’s working?

                          Amazing Job…

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                          • ?
                            A Former User last edited by

                            Yes, I have fixed the bugger.

                            FE62.gif 467a1c5c71e418299c86644fa7988bcb.png

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                            • ?
                              A Former User last edited by

                              We need to start testing this… Testnet time?

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                              • MrWyrm
                                MrWyrm administrators last edited by

                                Count me in.

                                Like what I do: 6uuy6isbrW1SBF191Bzgui1gWxPdNKx2PB

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                                • lizhi
                                  lizhi last edited by

                                  We need to start testing this… Testnet time?

                                  No, It is working on main_net. Some SX transactions have been confirmed.

                                  List:

                                  Block # 556535 (Mainchain)

                                  http://block.ftc-c.com/tx/137455e27de1c7b3302c3b0c462fb0d904a831339aebf468e6e85c224362f51b

                                  http://block.ftc-c.com/tx/ff6179824ddad55fe0666b2f7f7a25958d12644a5563f776ddfda7aeda20cf12

                                  Block #566321 (Mainchain)

                                  http://block.ftc-c.com/tx/843cf93bebad1682b6385ba4c8b19f137d40d3f0808330b196057eaa6b445a98

                                  http://block.ftc-c.com/tx/85568ae1dacfdc6730b0d2ddeb2c4d7d07b0ac702e6d9a7f408293e2cd628d57

                                  Block #569270 (Mainchain)

                                  http://block.ftc-c.com/tx/4305587958876434ba60af536a108f2adf2e99f3616b90ed8a1aec96b398817a

                                  Block #582187 (Mainchain)

                                  http://block.ftc-c.com/tx/530c29dffffeb8fe24a8b03f4ccbef0adc7008f5bdfbb29c8a3cf6f9cdcaf9a7

                                  http://block.ftc-c.com/tx/1de36440571edf827920007704f9987389d1f9c7fe597377ae93c29508f70013

                                  http://block.ftc-c.com/tx/d5005bb2cf68dbbdf23aa348742bf62e3056ab05bfc62f00a358b45c24e41a12

                                  Block #556535,566321,569270,582187 make in my 0.9.3 core pool(pool.ftc-c.com). If my miners find a block, SX transactions will been confirmed.

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                                  • lizhi
                                    lizhi last edited by

                                    SX transactions all right ^-^ , we can send FTC with SX address, then we can receive those coins.

                                    sx3.png

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                                    • kris_davison
                                      kris_davison last edited by

                                      So do we just download the new wallet and starts testing it?

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                                      • kris_davison
                                        kris_davison last edited by

                                        Is it possible to add support to the android wallet?

                                        Not sure if that’s required. Buy would any changes be needed to the wallet to make it compatible?

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                                        • lizhi
                                          lizhi last edited by

                                          So do we just download the new wallet and starts testing it?

                                          Yes. You can . download it at http://www.ftc-c.com/pack2/feathercoin-qt.rar

                                          sx4.png

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                                          • ?
                                            A Former User last edited by

                                            Let the testing begin

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