Products – Surya Med Spa

Our COO @czhuling will join the #Binance 'Off the Charts' Live Panel

Our COO @czhuling will join the #Binance 'Off the Charts' Live Panel
Register here to view it live: https://www.eventbrite.com/e/binance-off-the-charts-virtual-conference-tickets-108855951080

Gold Sponsors: aelf, VITE, Elrond Network, Alchemy, IOST

https://preview.redd.it/qleatsyvnma51.png?width=1102&format=png&auto=webp&s=2eabbe1439f2140f871f7eecdf883305a8a9fc06
Binance presents the “Off the Charts!” Virtual Conference, on July 14, 2020, from 9:00 AM to 7:00 PM (UTC).

About this Event

On July 14, 2020, join Binance as we kick off our third anniversary with one of the biggest blockchain events of the year.
Get the latest news and updates on all things blockchain and crypto, and take an exclusive look at what’s coming next at our “Off the Charts!” Virtual Conference, a blockbuster 10-hour live event with multi-regional programming that brings together 80+ influential speakers, including leading blockchain and crypto innovators, business and technology leaders, influential academics, and key policymakers.
Expect to hear the latest insights on the blockchain ecosystem from some of the industry’s most prominent leaders and visionaries. Join our can’t-miss event with powerful talks, breakthrough panels, opportunities to win prizes, and much more.
The “Off the Charts!” Virtual Conference will feature five segments with spotlights on regions making a significant impact in the space: Europe & the UK, Asia-Pacific, Russia & CIS, Africa & Middle East, and North America & LATAM.
Discover an array of keynotes, panels, and fireside chats, on these following themes and more:
  • Powering Crypto Growth: Local blockchain trends and evolving technologies that are transforming crypto awareness and adoption.
  • Crypto Meets Traditional Finance: Exploring opportunities for integrated and parallel development.
  • Blockchain and Global Health: Crypto’s appeal in today’s volatile environment.
  • Policy and Regulation: Spearheading community initiatives through cooperation and investment.
  • Trading Strategies and Technical Analysis: Training and insights to improve your trading.
Hear from these speakers and more:
  • Akon - Chairman & Co-Founder, Akoin
  • Cliff Liang - Director of Solutions Architecture, Amazon
  • David Ferrer Canosa - Secretary for Digital Policies, Government of Catalonia
  • Don Tapscott - Executive Chairman, The Blockchain Research Institute
  • Oleksandr Bornyakov - Deputy Minister, Ministry of Digital Transformation of Ukraine
  • Perianne Boring - Founder and President, Chamber of Digital Commerce
  • Changpeng Zhao (CZ) - Founder & CEO, Binance
  • He Yi - Co-Founder & CMO, Binance
  • Aarón Olmos - Economist, Olmos Group Venezuela
  • Alex Saunders - CEO & Founder, Nugget's News
  • Anna Baydakova - Reporter, CoinDesk
  • Anton Mozgovoy - Head of Product, Jthereum
  • Apolline Blandin - Research Lead, Cambridge Centre for Alternative Finance
  • Beniamin Mincu - CEO, Elrond
  • Bobby Ong - Co-founder, CoinGecko
  • Brendan Eich - CEO & Co-founder, Brave Software
  • Bruno Diniz - Managing Partner, Spiralem Innovation Consulting
  • Calvin Liu - Strategy Lead, Compound Labs
  • Camila Russo - Founder, The Defiant
  • Carlos Rischioto - Client Technical Leader & Blockchain SME, IBM
  • Carylyne Chan - Interim CEO, CoinMarketCap
  • Catherine Coley - CEO, Binance.US
  • Charles Hayter - CEO, CryptoCompare
  • Charles Hoskinson - Founder, Cardano
  • Charlie Shrem - Host, UntoldStories.Com
  • Chimezie Chuta - Founder, Blockchain Nigeria User Group
  • Darius Sit - Partner, QCP Capital
  • David Ferrer Canosa - Secretary for Digital Policies, Government of Catalonia
  • Denis Efremov - Investment Director, Da Vinci Capital
  • Don Tapscott - Executive Chairman, The Blockchain Research Institute
  • Eric Turner - VP, Market Intelligence, Messari
  • Erick Pinos - Americas Ecosystem Lead, Ontology
  • Ernesto Contreras Escalona - Head of Business Development, Dash Core Group
  • Eugene Mutai - CTO, Raise
  • Genping Liu - Partner, Vertex Ventures
  • Hany Rashwan - CEO, 21Shares AG
  • Harry Halpin - CEO, Nym Technologies
  • Hongfei Da - Founder, Neo
  • Igor Runets - CEO, BitRiver
  • İsmail Hakkı Polat - Cryptocurrency & Blockchain Lecturer, Istanbul Kadir Has University
  • Jamie Burke - CEO, Outlier Ventures
  • Jiho Kang - CEO, Binance.KR
  • John Izaguirre - Europe Ecosystem Lead, Ontology
  • John Khenneth Parungao - COO, SwipeWallet, Inc.
  • Jon Karas - President & Co-Founder, Akoin
  • Jorge Farias - CEO, Cryptobuyer
  • Joseph Hung - Director of Market Strategy, Klaytn
  • Joseph Lubin - CEO, ConsenSys
  • Juan Otero - CEO, Travala.com
  • Justin Sun - Founder, TRON & CEO, BitTorrent
  • Kristina Lucrezia Cornèr - Managing Editor & Head of Features, Cointelegraph
  • Ken Nakamura - CEO, GMO-Z.com Trust Company
  • Konstantin Goldstein - Principal Technical Evangelist, Microsoft
  • Kyle Samani - Managing Director, Multicoin Capital
  • Lucas Nuzzi - Head of Network Data, Coin Metrics
  • Mai Fujimoto "Miss Bitcoin" - Founder, KIZUNA
  • Matt Marx - Co-Founder, PhishFort
  • Meltem Demirors - Chief Strategy Officer, CoinShares
  • Mengdie Wang - CEO, Odaily
  • Michael Feng - CEO, Hummingbot
  • Michael Gu - Founder, Boxmining
  • Michelle Chivunga - Founder, Global Policy House
  • Mo Dong - Co-founder, Celer Network
  • Munachi Ogueke - Chief Business Officer, YellowCard Financial
  • Naveen Surya - Chairman, Fintech Convergence Council
  • Navin Gupta - MD MENA and South East Asia, Ripple
  • Nick White - Co-founder, Harmony
  • Nischal Shetty - CEO, WazirX
  • Pang Xue Kai - CEO, Tokocrypto
  • Paul Veradittakit - Partner, Pantera Capital
  • Perianne Boring - Founder and President, Chamber of Digital Commerce
  • Patrick Dai - CEO, Qtum Chain Foundation
  • Patrick Heusser - Senior Trader, Crypto Broker AG
  • Peter DeMeo - Global Market Development Leader, IBM
  • Priscila Yazbek - Editora de Finanças, InfoMoney
  • Rachel-Rose O'Leary - Researcher, Dark Renaissance Technologies
  • Rich Teo - Co-founder & CEO Asia, Paxos
  • Richard Yan - COO, Vite Labs
  • Robert Kopitsch - Secretary General, Blockchain for Europe
  • Roei Levav - CEO, Efficient Frontier
  • Rune Christensen - Co-founder, MakerDAO
  • Sam Bankman-Fried - CEO, FTX
  • Sandeep Nailwal - COO, Matic Network
  • Sean Rolland - Director of Product, BitPay
  • Senator Ihenyen - Lead Partner, Infusion Lawyers
  • Sergej Kunz - CEO, 1inch.exchange
  • Sergey Shayakhmetov - CBDO, Sberbank Blockchain Lab
  • Shi Shawn - Co-founder, Alchemy Pay
  • Sonya Kuhnel - COO, Xago & Co-Founder, Bitcoin Events & Blockchain Academy
  • Terry Wang - Co-founder, IOST
  • Thaise Saeter - CMO, Convex Research
  • Thamim Ahmed - Researcher, University College London
  • Tom Lee - Head of Research, Fundstrat Global Advisors
  • Tyler Spalding - CEO, Flexa
  • Veronica Wong - CEO, SafePal
  • Viktor Radchenko - Founder, Trust Wallet
  • Winpro Yan - Chief Editor, Mars Finance
  • Yele Bademosi - CEO, Bundle Africa
  • Zhuling Chen - COO, Aelf Blockchain
Stay tuned as speakers and more themes are announced in the coming weeks! For more details, read our blog post here and visit our event website here.
During the livestream, we will be holding special #BinanceTurns3 activities for viewers and giving away limited-edition prizes, swag, and collectible NFTs at various points throughout the livestream. Availability is limited! Register today!
Binance Awards 2020
Join Binance as we celebrate the standout innovators and businesses that have made sizable contributions, both to our community and to our blockchain ecosystem. Winners will be announced during our live event, and results will be published on our blog afterwards.
Register on Eventbrite today and tune in to the “Off the Charts” Virtual Conference on July 14, 2020, from 9:00 AM to 7:00 PM (UTC).
--------
Thank you to our partners for helping make this event possible!
submitted by Floris-Jan to aelfofficial [link] [comments]

TxProbe: Discovering Bitcoin's Network Topology Using Orphan Transactions

arXiv:1812.00942
Date: 2018-12-10
Author(s): Sergi Delgado-Segura, Surya Bakshi, Cristina Pérez-Solà, James Litton, Andrew Pachulski, Andrew Miller, Bobby Bhattacharjee

Link to Paper


Abstract
Bitcoin relies on a peer-to-peer overlay network to broadcast transactions and blocks. From the viewpoint of network measurement, we would like to observe this topology so we can characterize its performance, fairness and robustness. However, this is difficult because Bitcoin is deliberately designed to hide its topology from onlookers. Knowledge of the topology is not in itself a vulnerability, although it could conceivably help an attacker performing targeted eclipse attacks or to deanonymize transaction senders. In this paper we present TxProbe, a novel technique for reconstructing the Bitcoin network topology. TxProbe makes use of peculiarities in how Bitcoin processes out of order, or "orphaned" transactions. We conducted experiments on Bitcoin testnet that suggest our technique reconstructs topology with precision and recall surpassing 90%. We also used TxProbe to take a snapshot of the Bitcoin testnet in just a few hours. TxProbe may be useful for future measurement campaigns of Bitcoin or other cryptocurrency networks.

References
  1. Albert, R., Barabási, A.: Statistical mechanics of complex networks. CoRR condmat/0106096 (2001)
  2. Biryukov, A., Khovratovich, D., Pustogarov, I.: Deanonymisation of clients in bitcoin p2p network. In: Proceedings of the 2014 ACM SIGSAC Conference on Computer and Communications Security. pp. 15–29. CCS ’14, ACM, New York, NY, USA (2014)
  3. Biryukov, A., Pustogarov, I.: Bitcoin over tor isn’t a good idea. In: Proceedings of the 2015 IEEE Symposium on Security and Privacy. pp. 122–134. SP ’15, IEEE Computer Society, Washington, DC, USA (2015), https://doi.org/10.1109/SP.2015.15
  4. Erdös, P., Rényi, A.: On the evolution of random graphs. In: Math. Inst. Hungar. Acad. Sci. pp. 17–61 (1960)
  5. Gencer, A.E., Basu, S., Eyal, I., van Renesse, R., Sirer, E.G.: Decentralization in bitcoin and ethereum networks (2018)
  6. Grundmann, M., Neudecker, T., Hartenstein, H.: Exploiting transaction accumulation and double spends for topology inference in bitcoin. In: Financial Cryptography and Data Security. Springer International Publishing (2018)
  7. Harding, D.A., Todd, P.: Opt-in Full Replace-by-Fee Signaling. https://github.com/bitcoin/bips/blob/mastebip-0125.mediawiki (2015)
  8. Heilman, E., Kendler, A., Zohar, A., Goldberg, S.: Eclipse attacks on bitcoin’s peer-to-peer network. In: 24th USENIX Security Symposium (USENIX Security 15). pp. 129–144. USENIX Association, Washington, D.C. (2015)
  9. Jansen, R., Johnson, A.: Safely measuring tor. In: Proceedings of the 2016 ACM SIGSAC Conference on Computer and Communications Security. pp. 1553–1567. ACM (2016)
  10. Koshy, P., Koshy, D., McDaniel, P.: An analysis of anonymity in bitcoin using p2p network traffic. In: Christin, N., Safavi-Naini, R. (eds.) Financial Cryptography and Data Security. pp. 469–485. Springer Berlin Heidelberg, Berlin, Heidelberg (2014)
  11. Miller, A., Litton, J., Pachulski, A., Gupta, N., Levin, D., Spring, N., Bhattacharjee, B.: Discovering bitcoin’s public topology and influential nodes (2015)
  12. Nayak, K., Kumar, S., Miller, A., Shi, E.: Stubborn mining: Generalizing selfish mining and combining with an eclipse attack. In: 2016 IEEE European Symposium on Security and Privacy (EuroS P). pp. 305–320 (March 2016)
  13. Neudecker, T., Andelfinger, P., Hartenstein, H.: Timing analysis for inferring the topology of the bitcoin peer-to-peer network. In: 2016 Intl IEEE Conferences on Ubiquitous Intelligence Computing, Advanced and Trusted Computing, Scalable Computing and Communications, Cloud and Big Data Computing, Internet of People, and Smart World Congress (UIC/ATC/ScalCom/CBDCom/IoP/SmartWorld). pp. 358–367 (July 2016)
  14. Neudecker, T., Hartenstein, H.: Could network information facilitate address clustering in bitcoin? In: Brenner, M., Rohloff, K., Bonneau, J., Miller, A., Ryan, P.Y., Teague, V., Bracciali, A., Sala, M., Pintore, F., Jakobsson, M. (eds.) Financial Cryptography and Data Security. pp. 155–169. Springer International Publishing, Cham (2017)
  15. Newman, M.E.: The structure and function of complex networks. SIAM review 45(2), 167–256 (2003)
  16. Nick, J.: Guessing bitcoin’s p2p connections. https://jonasnick.github.io/blog/2015/03/06/guessing-bitcoins-p2p-connections/ (2015)
  17. The Bitcoin Core developers: Bitcoin core 0.10.1 release notes. https://github.com/bitcoin/bitcoin/blob/v0.10.1/doc/release-notes.md (april 2015)
submitted by dj-gutz to myrXiv [link] [comments]

Dandelion++: Lightweight Cryptocurrency Networking with Formal Anonymity Guarantees

arXiv:1805.11060
Date: 2018-05-28
Author(s): Giulia Fanti, Shaileshh Bojja Venkatakrishnan, Surya Bakshi, Bradley Denby, Shruti Bhargava, Andrew Miller, Pramod Viswanath

Link to Paper


Abstract
Recent work has demonstrated significant anonymity vulnerabilities in Bitcoin's networking stack. In particular, the current mechanism for broadcasting Bitcoin transactions allows third-party observers to link transactions to the IP addresses that originated them. This lays the groundwork for low-cost, large-scale deanonymization attacks. In this work, we present Dandelion++, a first-principles defense against large-scale deanonymization attacks with near-optimal information-theoretic guarantees. Dandelion++ builds upon a recent proposal called Dandelion that exhibited similar goals. However, in this paper, we highlight simplifying assumptions made in Dandelion, and show how they can lead to serious deanonymization attacks when violated. In contrast, Dandelion++ defends against stronger adversaries that are allowed to disobey protocol. Dandelion++ is lightweight, scalable, and completely interoperable with the existing Bitcoin network. We evaluate it through experiments on Bitcoin's mainnet (i.e., the live Bitcoin network) to demonstrate its interoperability and low broadcast latency overhead.

References
[1] [n. d.]. AWS Regions and Endpoints. ([n. d.]). http://docs.aws.amazon.com/general/latest/grande.html.
[2] [n. d.]. Bitcoin Core integration/staging tree. ([n. d.]). https://github.com/bitcoin/bitcoin.
[3] [n. d.]. Chainalysis. ([n. d.]). https://www.chainalysis.com/.
[4] [n. d.]. The Kovri I2P Router Project. ([n. d.]). https://github.com/monero-project/kovri.
[5] [n. d.]. Monero. ([n. d.]). https://getmonero.org/home.
[6] 2015. Bitcoin Core Commit 5400ef6. (2015). https://github.com/bitcoin/bitcoin/commit/5400ef6bcb9d243b2b21697775aa6491115420f3.
[7] 2016. reddit/monero. (2016). https://www.reddit.com/Monero/comments/4aki0k/what_is_the_status_of_monero_and_i2p/.
[8] Elli Androulaki, Ghassan O Karame, Marc Roeschlin, Tobias Scherer, and Srdjan Capkun. 2013. Evaluating user privacy in bitcoin. In International Conference on Financial Cryptography and Data Security. Springer, 34–51.
[9] Maria Apostolaki, Aviv Zohar, and Laurent Vanbever. 2016. Hijacking Bitcoin: Large-scale Network Attacks on Cryptocurrencies. arXiv preprint arXiv:1605.07524 (2016).
[10] Krishna B Athreya and Peter E Ney. 2004. Branching processes. Courier Corporation.
[11] Alex Biryukov, Dmitry Khovratovich, and Ivan Pustogarov. 2014. Deanonymisation of clients in Bitcoin P2P network. In Proceedings of the 2014 ACM SIGSAC Conference on Computer and Communications Security. ACM, 15–29.
[12] Alex Biryukov and Ivan Pustogarov. 2015. Bitcoin over Tor isn’t a good idea. In Symposium on Security and Privacy. IEEE, 122–134.
[13] John Bohannon. 2016. Why criminals can’t hide behind Bitcoin. Science (2016).
[14] Shaileshh Bojja Venkatakrishnan, Giulia Fanti, and Pramod Viswanath. 2017. Dandelion: Redesigning the Bitcoin Network for Anonymity. POMACS 1, 1 (2017), 22.
[15] D. Chaum. 1988. The dining cryptographers problem: Unconditional sender and recipient untraceability. Journal of cryptology 1, 1 (1988).
[16] Ramnath K Chellappa and Raymond G Sin. 2005. Personalization versus privacy: An empirical examination of the online consumer’s dilemma. Information technology and management 6, 2 (2005), 181–202.
[17] H. Corrigan-Gibbs and B. Ford. 2010. Dissent: accountable anonymous group messaging. In CCS. ACM.
[18] George Danezis, Claudia Diaz, Emilia Käsper, and Carmela Troncoso. 2009. The wisdom of Crowds: attacks and optimal constructions. In European Symposium on Research in Computer Security. Springer, 406–423.
[19] George Danezis, Claudia Diaz, Carmela Troncoso, and Ben Laurie. 2010. Drac: An Architecture for Anonymous Low-Volume Communications.. In Privacy Enhancing Technologies, Vol. 6205. Springer, 202–219.
[20] R. Dingledine, N. Mathewson, and P. Syverson. 2004. Tor: The second-generation onion router. Technical Report. DTIC Document.
[21] G. Fanti, P. Kairouz, S. Oh, and P. Viswanath. 2015. Spy vs. Spy: Rumor Source Obfuscation. In SIGMETRICS Perform. Eval. Rev., Vol. 43. 271–284. Issue 1.
[22] Giulia Fanti and Pramod Viswanath. 2017. Anonymity Properties of the Bitcoin P2P Network. arXiv preprint arXiv:1703.08761 (2017).
[23] M.J. Freedman and R. Morris. 2002. Tarzan: A peer-to-peer anonymizing network layer. In Proc. CCS. ACM.
[24] Sam Frizell. 2015. Bitcoins Are Easier To Track Than You Think. Time (January 2015).
[25] Adam Efe Gencer and Emin Gün Sirer. 2017. State of the Bitcoin Network. Hacking Distributed, http://hackingdistributed.com/2017/02/15/state-of-the-bitcoin-network/. (February 2017).
[26] S. Goel, M. Robson, M. Polte, and E. Sirer. 2003. Herbivore: A scalable and efficient protocol for anonymous communication. Technical Report.
[27] P. Golle and A. Juels. 2004. Dining cryptographers revisited. In Advances in Cryptology-Eurocrypt 2004.
[28] Ethan Heilman, Leen Alshenibr, Foteini Baldimtsi, Alessandra Scafuro, and Sharon Goldberg. 2016. TumbleBit: An untrusted Bitcoin-compatible anonymous payment hub. Technical Report. Cryptology ePrint Archive, Report 2016/575.
[29] TE Jedusor. 2016. Mimblewimble. (2016).
[30] Philip Koshy. 2013. CoinSeer: A Telescope Into Bitcoin. Ph.D. Dissertation. The Pennsylvania State University.
[31] Philip Koshy, Diana Koshy, and Patrick McDaniel. 2014. An analysis of anonymity in bitcoin using p2p network traffic. In International Conference on Financial Cryptography and Data Security. Springer, 469–485.
[32] Greg Maxwell. 2013. CoinJoin: Bitcoin privacy for the real world. In Post on Bitcoin Forum.
[33] Dave McMillen. 2017. Mirai IoT Botnet: Mining for Bitcoins? SecurityIntelligence (April 2017).
[34] Sarah Meiklejohn, Marjori Pomarole, Grant Jordan, Kirill Levchenko, Damon McCoy, Geoffrey M Voelker, and Stefan Savage. 2013. A fistful of bitcoins: characterizing payments among men with no names. In Proceedings of the 2013 conference on Internet measurement conference. ACM, 127–140.
[35] Marc Mezard and Andrea Montanari. 2009. Information, physics, and computation. Oxford University Press.
[36] Andrew Miller, James Litton, Andrew Pachulski, Neal Gupta, Dave Levin, Neil Spring, and Bobby Bhattacharjee. 2015. Discovering Bitcoin’s public topology and influential nodes. (2015).
[37] Prateek Mittal, Matthew Wright, and Nikita Borisov. 2013. Pisces: Anonymous communication using social networks. In NDSS. ACM.
[38] Satoshi Nakamoto. 2008. Bitcoin: A peer-to-peer electronic cash system. (2008).
[39] Micha Ober, Stefan Katzenbeisser, and Kay Hamacher. 2013. Structure and anonymity of the bitcoin transaction graph. Future internet 5, 2 (2013), 237–250.
[40] Larry L Peterson and Bruce S Davie. 2007. Computer networks: a systems approach. Elsevier.
[41] P. C. Pinto, P. Thiran, and M. Vetterli. 2012. Locating the source of diffusion in large-scale networks. Physical review letters 109, 6 (2012), 068702.
[42] Fergal Reid and Martin Harrigan. 2013. An analysis of anonymity in the bitcoin system. In Security and privacy in social networks. Springer, 197–223.
[43] Michael K Reiter and Aviel D Rubin. 1998. Crowds: Anonymity for web transactions. ACM Transactions on Information and System Security (TISSEC) 1, 1 (1998), 66–92.
[44] Dorit Ron and Adi Shamir. 2013. Quantitative analysis of the full bitcoin transaction graph. In International Conference on Financial Cryptography and Data Security. Springer, 6–24.
[45] Tim Ruffing, Pedro Moreno-Sanchez, and Aniket Kate. 2014. CoinShuffle: Practical decentralized coin mixing for Bitcoin. In European Symposium on Research in Computer Security. Springer, 345–364.
[46] Eli Ben Sasson, Alessandro Chiesa, Christina Garman, Matthew Green, Ian Miers, Eran Tromer, and Madars Virza. 2014. Zerocash: Decentralized anonymous payments from bitcoin. In Symposium on Security and Privacy. IEEE, 459–474.
[47] Alexander Schrijver. 2002. Combinatorial optimization: polyhedra and efficiency. Vol. 24. Springer Science & Business Media.
[48] Rob Sherwood, Bobby Bhattacharjee, and Aravind Srinivasan. 2005. P5: A protocol for scalable anonymous communication. Journal of Computer Security 13, 6 (2005), 839–876.
[49] Jelle van den Hooff, David Lazar, Matei Zaharia, and Nickolai Zeldovich. [n. d.]. Scalable Private Messaging Resistant to Traffic Analysis. ([n. d.]).
[50] Zhaoxu Wang, Wenxiang Dong, Wenyi Zhang, and Chee Wei Tan. 2014. Rumor source detection with multiple observations: Fundamental limits and algorithms. In ACM SIGMETRICS Performance Evaluation Review, Vol. 42. ACM, 1–13.
[51] David Isaac Wolinsky, Henry Corrigan-Gibbs, Bryan Ford, and Aaron Johnson. 2012. Dissent in Numbers: Making Strong Anonymity Scale.. In OSDI. 179–182.
[52] M. Zamani, J. Saia, M. Movahedi, and J. Khoury. 2013. Towards provably-secure scalable anonymous broadcast. In USENIX FOCI.
[53] Bassam Zantout and Ramzi Haraty. 2011. I2P data communication system. In Proceedings of ICN. Citeseer, 401–409.
[54] Kai Zhu and Lei Ying. 2014. A robust information source estimator with sparse observations. Computational Social Networks 1, 1 (2014), 3.
submitted by dj-gutz to myrXiv [link] [comments]

BIP proposal - Dandelion: Privacy Preserving Transaction Propagation | Andrew Miller | Jun 12 2017

Andrew Miller on Jun 12 2017:
Dear bitcoin-dev,
We've put together a preliminary implementation and BIP for
Dandelion, and would love to get your feedback on it. Dandelion is a
privacy-enhancing modification to Bitcoin's transaction propagation
mechanism. Its goal is to obscure the original source IP of each
transaction.
https://github.com/gfanti/bips/blob/mastebip-dandelion.mediawiki
https://github.com/gfanti/bitcoin/tree/dandelion
The main idea is that transaction propagation proceeds in two
phases: first the “stem” phase, and then “fluff” phase. During the
stem phase, each node relays the transaction to a single peer. After
a random number of hops along the stem, the transaction enters the
fluff phase, which behaves just like ordinary transaction
flooding/diffusion. Even when an attacker can identify the location of
the fluff phase, it is much more difficult to identify the source of
the stem. Our approach and some preliminary evaluation are explained
in more detail in the BIP. The research paper originally introducing
this idea was recently presented at SIGMETRICS'17.
https://arxiv.org/pdf/1701.04439.pdf
Compared to the original paper, our current proposal includes
several new design ideas, especially:
actively tries to learn which nodes were involved in the stem phase.
Our approach is called "Mempool Embargo", meaning a node that receives
a "stem phase" transaction behaves as though it never heard of it,
until it receives it again from someone else (or until a random timer
elapses).
expense of propagation quality. Our implementation is designed so that
if some node drops the transaction (or when Dandelion is adopted only
partially), then the fallback behavior is ordinary Bitcoin
propagation.
We'd especially like feedback on the implementation details related
to the two points above. The mempool embargo mechanism is tricky,
since it hard to rule out indirect behavior that reveals if a
transaction is in mempool. In the BIP we explain one counterexample,
but at least it requires the attacker to get its connections banned.
Are there other ways we haven't thought of? We think the alternative
approach (bypassing mempool entirely) seems even harder to get right,
and foregoes existing DoS protection.
We're currently running in-situ benchmark experiments with this code
on testnet and will report on those in this thread if there's
interest.
Some prior discussion can be found here:
from gmaxwell that we've mostly incorporated in the current proposal)
Thanks!
Giulia Fanti
Andrew Miller
Surya Bakshi
Shaileshh Bojja Venkatakrishnan
Pramod Viswanath
original: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-June/014571.html
submitted by dev_list_bot to bitcoin_devlist [link] [comments]

Surya Genesis - GNS-2303 Silver Gray, White, Denim Surya magic bitcoin #Bitcoin क्या है ? जानिए बिटकॉइन की पूरी जानकारी . Surya Samachar SETKUMAR SURYA - YouTube BITCOIN's NEXT STOP $6'000!!? DECISION TODAY!!! & Peter Schiff EXPOSED!!! w. DavinciJ15

Bitcoin Buy. Coming Soon MKC available coin Ethereum Buy. Coming Soon More coins will be added Request for New Coins Please suggest other coins to be used in SURYA services. After the internal review, we will inform you of the result of it. Send a Request. Problem-Solution SURYA Technologies Web/Mobile Service Technology. Users can access all SURYA game services, based on HTML5, from ... Bakkt Bitcoin Monthly Futures gab täglich 15.955 BTC-Kontrakte nach und übertraf das bisherige Rekordhoch um 36%. "Tatsächlich geht es nicht einmal um Bitcoin, sondern um den binären Handel, etwas, das niemand mit einem Bargepole anfassen sollte." Jeder Kontrakt des Bakkt Bitcoin-Futures-Kontrakts entspricht 1 BTC. Es ist jedoch nicht nur Baakt, da sich das Volumen von LMAX Digital, einer ... Bitcoin adalah CRYPTOCURRENCY dikenalkan sejak tahun 2009 dan mulai populer pada tahun 2013. VIP BITCOIN merupakan market place terbesar di Indonesia, tempat anda dapat membeli dan menjual bitcoin dengan mudah dan aman. Buat rekening bitcoin disini! Isi kolom lengkap. Setelah klik registrasi, silahkan cek email anda dan klik AKTIVASI ACCOUNT. Surya Rastogi. Follow. Mar 16, 2018 · 3 min read. To complete my BEng in Computing degree at Imperial, I chose to complete a thesis conducting a visual analysis of the Bitcoin blockchain. My ... Academia.edu is a platform for academics to share research papers.

[index] [43117] [39045] [16060] [17348] [18535] [10492] [34451] [25477] [10742] [50963]

Surya Genesis - GNS-2303 Silver Gray, White, Denim

#creativethink #freeenergy I am show about free energy generator using high powered copper winding coil. the permanent magnets create magnetic field and conv... Bitcoin trading method guaranteed not to lose money - Duration: 33:07. davincij15 8,820 views. 33:07. What's Next For Bitcoin & Altcoins - Complete Market Analysis - Duration: 57:15. ... Hi Guys! Selamat Datang di Channel Ferry Surya Windy ya Bro! Channel Gue Ini Berisikan Tentang Video Game Konyol - Konyolan, VLOG, Tutorial, Tips dan Trik, d... The Surya Genesis GNS-2303 features an updated traditional design that renovates traditional motifs. This item is Machine-woven and perfect for high-traffic areas with virtually no shedding and ... SETKUMAR SURYA; Videos; Playlists; Channels; Discussion; About; Home Trending History Get YouTube Premium Get YouTube TV Best of YouTube ...

#