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Showing 20 of 1,058 results by culexevilman
Post
Topic
Board Bitcoin Discussion
Re: The more delay on investing in bitcoin , the more backward you are.
by
culexevilman
on 17/02/2025, 08:06:01 UTC
Yes, Bitcoin is definitely a scam coin.  Smiley Smiley
Post
Topic
Board Bitcoin Discussion
Re: Bitcoin is difficult to understand
by
culexevilman
on 17/02/2025, 08:04:32 UTC
Take some time to learn about it. It is worth your time to do so.
Post
Topic
Board 中文 (Chinese)
Re: 13年来这个论坛的老人还在吗,你们还好吗
by
culexevilman
on 17/02/2025, 08:01:30 UTC
还活着呢 :)
Post
Topic
Board Development & Technical Discussion
Re: OMNI-UTXO for Bitcoin Network
by
culexevilman
on 14/04/2024, 11:49:57 UTC
We are trying to build an interesting way called OMNI-UTXO protocol to improve the ecosystem of the BTC network.

Summary

Decentralized ledger techology(DLT) is the foundation of Web3, and now we are considering whether we can build a new kind of decentralized ledger over different consensus spaces of chains. In particular, we define a new global token protocol based on the UTXO transaction model and use the Bitcoin network and other currently stable blockchains as abstract nodes to record the states of the new global decentralized ledger together. As a result, the security of the new kind of token will be guaranteed by both the Bitcoin network and other blockchains like Ethereum, so that users can keep the integrity of their tokens and more diverse applications will be introduced into the BTC ecosystem as the application businesses can be deployed anywhere but the settlements are recorded on BTC.

Simply, the legitimacy of all on-chain states and operations can be equivalently verified and recorded simultaneously over different consensus spaces, regardless of where they were initiated. That’s why we call the new token protocol OMNI-UTXO.

Motivation

We think the first thing to extend the BTC ecosystem is for assets issued on the BTC network to be able to circulate throughout the web3 world. But current methods have some problems.  
  • The current paradigm(like token bridges) of using a token by wrapped it on multi-chains seperately lead to fragmentation, and may have some centralization and security issues related to the bridge.  


As we forge ahead in this ever-evolving domain of decentralized technologies, the OMNI-UTXO protocol stands out as a beacon of potential, aiming to bolster the BTC network ecosystem significantly. The ambitious undertaking of bridging various blockchain consensus spaces under a unified global token protocol not only enhances the fluidity and accessibility of digital assets but also solidifies their security across multiple blockchain infrastructures. This endeavor aligns seamlessly with the original vision of a decentralized and secure digital currency.

The integration of UTXO models across different blockchains promises to mitigate the prevalent issues of fragmentation and centralized vulnerabilities inherent in current bridging methods. Your approach to creating a synchronized recording mechanism, rather than mere token transfers, ensures that even in the event of disruptions on one chain, the assets remain intact and protected within the Bitcoin network's robust framework. This method not only preserves the integrity of digital assets but also reinforces the trust in decentralized solutions.

By extending the utility of BTC and other cryptocurrencies, enabling them to operate fluidly across a tapestry of blockchain networks, OMNI-UTXO could very well drive greater adoption and utility of blockchain technology. It's a commendable step toward realizing a more interconnected and resilient blockchain ecosystem.

Your focus on ensuring that the legitimacy of all on-chain states and operations can be equivalently verified and recorded, irrespective of their originating blockchain, is a testament to the commitment to maintaining the decentralized ethos that Bitcoin was built upon.

I commend the team behind OMNI-UTXO for their vision and dedication to pushing the boundaries of what's possible within the blockchain space.
  • If BTC was transferred to another chain through the current token bridge, and once the target chain breaks down, it will be very hard to correctly get the BTCs back to the users although locked in the bridge account.

The core of the OMNI-UTXO protocol is recording synchronized instead of bridging, even if all the other chains break down, as long as the Bitcoin network is still running, the user’s assets will not be lost.

  • The fragment problem will be solved.
  • The security of users' multi-chain assets can be greatly enhanced.
    Specification

    The keywords "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 and RFC 8174.

    O-TX

    It is short for the transaction of OMNI-UTXO.

    Data structure of O-TX

    The structure is like this

    [/list][/list]
    Code:
    ```js
    {
        deploy:  // Only used when deploying an OMNI-UTXO token
        {
            name: '<name of the token>',
            deployer: '<account of the deployer>'
        },
        name: "<name of the token>", // Can be absent when deploying
        signature: ['<signature>'],
        inputs: [ // Can be absent when deploying
            {
       txid: '<txid of the transaction from which the input is generated>',
                index: '<index of the input in the transaction>',
                address: '<the omni-address of the owner>'
                amount: '<amount of the input>',
            }
        ],
        outputs: [ // Can be absent when deploying
            {
                address: '<owner address of the output>',
       amount: '<amount of the output>'
            },
        ]  
    }
    ```

    The signature MAY be computed like this

    Code:
    sign(keccak256(CONCAT(BYTES(txid), BYTES(index), BYTES(amount))))

    O-TX types

    There are 3 types of O-TX

    • Deploy: Deploy a new OMNI-UTXO token

    Code:
       ```js
        {
            deploy: {
                name: '<name of the token>',
                deployer: '<address of the deployer>'
            }
        }
        ```
    • After deployed, the `asset_id`  is RECOMMENDED to be created as following:
    Code:
    keccak256(CONCAT(BYTES(related native transaction hash), BYTES(output index), BYTES(name), BYTES(owner)))




      • Mint:

      Code:
         ```js
          {
              name: '<name of the token> like: TEST-TOKEN',
              asset_id: '<the asset id created after deployed>',
              signatures: ['<signature>'],
              inputs: [
                  {
                      txid: 0x00,
                index: 0x00,
                      amount: '<amount to be minted>'
                  }
              ],
              outputs: [
                  {
                      address: '<owner address of the output>',
             amount: '<amount of the output>'
                  },
              ]
          }
          ```

      • The `txid` is fixed to `0x00` in `Mint` operation
      • The `index` starts at 0, and increase by 1 after every minting

      • Spend: Spend O-UTXOs

      Code:
         ```js
          {
              name: '<name of the token>',
              asset_id: '<the asset id created after deployed>',
              signatures: ['<signature>'],
              inputs: [
                  {
             txid: '<txid of the transaction from which the input is generated>',
                      index: '<index of the input in the transaction>',
                      address: '<the omni-address of the owner>',
                      amount: '<amount of the input>',
                  }
              ],
              outputs: [
                  {
                      address: '<owner address of the output>',
             amount: '<amount of the output>'
                  },
              ]
          }
          ```

      O-TXID

      It is short for OMNI-UTXO transaction ID and is generated according to the inputs of O-TX.  
      O-TXID MAY be generated as following  

      Code:
      ```js
      keccak256(CONCAT(BYTES(inputs[0].txid, inputs[0].index, BYTES(inputs[0].amount),...))
      ```

      O-UTXO

      O-UTXO is short for the UTXO of OMNI-UTXO.
      The UTXO transaction model is used for OMNI-UTXO, namely all tokens are stored in the unspent O-TX outputs. To distinguish the UTXO of OMNI-UTXO from the UTXO of BTC, we call the former the `O-UTXO`. Anyone who has the private key to the O-UTXO can spend it.

      Index of O-UTXO
      An O-UTXO is indexed by the O-TXID: O-INDEX, in which O-TXID is the id of the O-TX from which the O-UTXO is generated, and the O-INDEX is the index of the O-UTXO in the transaction.

      Constraint

      The balance amount of inputs MUST be equal to the balance amount of outputs

      Execution Layer

      The main purpose of the Execution Layer is to guarantee all chains have executed the same transactions and have the same state. In addition, the Execution Layer can batch and execute OMNI-UTXO transactions(o-transactions for short) in a period, generate zk-proof, and commit it together with state changes to chains, to improve the performance of OMNI-UTXO.

      Interpreter

      An interpreter SHOULD be introduced to execute O-TXs, due to the Bitcoin network not being able to deal with O-TXs. The transaction data that the interpreter executes are all recorded on the Bitcoin network, so anyone can restore the state of OMNI-UTXO tokens, to check if the interpreter functions well.

      Rationale

      Architecture

      Figure.1 Architecture



      With the Omni-UTXO protocol, everyone can issue global tokens that can be used on multi-chains by leveraging scripts on Bitcoin, smart contracts, or similar mechanisms on other existing blockchains.

      As shown in [Figure.1](#architecture).  

      • The OMNI-UTXO smart contracts and the scripts of Bitcoin are referred to as Abstract Nodes. The states recorded by the Abstract Nodes that are stored on different blockchains respectively could be considered as copies of the global state, and they are ultimately consistent.  
      • Execution-Layer is an off-chain execution program responsible for receiving Omni-UTXO transactions, executing transactions, and generating proofs to chains.
      Principle

      • The `UTXO transaction model` is mentioned above. There are several advantages to the UTXO transaction model
         - No worry about transaction sequence, because UTXOs are executed serially
          - Privacy transactions can be easily supported
          - High concurrency, because one transaction can include many inputs and outputs
      • The Execution Layer increases transaction capacity, saves gas fees, and reduces transaction latency.

      Workflow

      Suppose there is
      • An OMNI-UTXO token O-TOKEN
      • A common user `A` has public key pk-A.
      • A common user `B` has public key pk-B.
      • An O-UTXO `A1` with O-TXID `txid`, O-INDEX 0
      Code:
             ```js
              {
                  address: 'pk-A',
                  amount: 1000
              }
              ```
      • `A` signs `A1` and initiates an O-TX `tx-e`
      Code:
             ```js
              {
                  asset_id: '<the asset id created after deployed>',
                  signatures: ['<signature>'],
                  inputs: [
                      {
                          txid: 'txid',
                 index: 0,
                          address: 'pk-A',
                 amount: 1000,
                      }
                  ]
                  outputs: [
                      {
                          address: 'pk-A',
                          amount: 500
                      },
                      {
                          address: 'pk-B'
                          amount: 500
                      }
                  ]
              }  
              ```
      • `A` sends `tx-e` to the Execution Layer.
      • The Execution Layer checks that
             - If `A1` is valid, namely `A1` is not spent
              - If the inputs and outputs of `tx-e` match, the total amount of outputs is 1000
          
      • The Execution Layer executes `tx-e` after all checks are passed
      • Over a while, the Executor Layer batches transactions executed in the period, generates a related zk-proof and pushes transactions and proofs to L1s.  
      • L1s verify proofs
             - The interpreter gets proofs from the Bitcoin network, verifies proofs, and then updates states to show.
              - Smart contracts verify proofs and record new states.
          
      • Users can query outputs of `tx-e` on all chosen chains.

      More Information

      More information can be found at the GitHub of Omni Labs.

      Contact:

      Post
      Topic
      Board Development & Technical Discussion
      Re: Bitcoin's Quantum Evolution
      by
      culexevilman
      on 11/03/2024, 23:27:25 UTC
      Subject: The Quantum Quandary: NIST's Candidates vs. Bitcoin's Block Size Limit`

      Fellow visionaries,

      As we delve deeper into the realm of Post-Quantum Cryptography (PQC) and its implications for Bitcoin, an emerging challenge becomes increasingly apparent. The heart of the matter lies in the signature sizes of the three leading candidates proposed by NIST for quantum-resistant algorithms. While these candidates offer promising security against quantum computing threats, their integration into Bitcoin's ecosystem presents a notable hurdle: the significantly larger signature sizes compared to our current ECDSA secp256k1 standard.

      Bitcoin's existing block size limit, meticulously designed to balance efficiency, security, and decentralization, has served us well. However, the augmented signature sizes of NIST's PQC candidates pose a risk of bloating the block space, potentially impacting transaction throughput and, by extension, the network's scalability and performance. The elegance and compactness of ECDSA secp256k1 signatures have been instrumental in maintaining Bitcoin's streamlined and efficient operation. Transitioning to a post-quantum cryptographic standard without addressing the increased signature size could introduce constraints that challenge this delicate balance.

      The crux of our discourse should not be whether to adapt to the quantum threat—this is a given—but how we can do so while preserving the fundamental attributes that define Bitcoin. We are tasked with a formidable challenge: to innovate within the confines of our current architecture or to re-envision aspects of it to accommodate the future of quantum-resistant cryptography.

      This situation calls for a collective effort to explore and develop solutions that align with Bitcoin's principles. Whether through optimizing the proposed PQC algorithms to reduce signature size, rethinking the block size limit, or devising novel cryptographic techniques that offer both quantum resistance and efficiency, our path forward must be forged with careful consideration and collaborative ingenuity.

      As we stand at this crossroads, I invite the community to engage in a profound and forward-thinking dialogue. Let us pool our knowledge, creativity, and spirit of innovation to address this challenge. Together, we can navigate the complexities of integrating quantum-resistant algorithms into Bitcoin, ensuring its security and legacy in the face of quantum advancements.

      In the spirit of collaboration and progress,

      [A Legendary Member of Bitcointalk]
      Post
      Topic
      Board Development & Technical Discussion
      Re: Bitcoin's Quantum Evolution
      by
      culexevilman
      on 11/03/2024, 23:23:48 UTC
      Navigating the Quantum Threat: A Call to the Bitcoin Community

      To my fellow pioneers,

      Over the past few decades, the cryptographic underpinnings that form the bedrock of our digital communications—and indeed, Bitcoin itself—have withstood numerous challenges. The secure, decentralized transactions that Bitcoin enables rely on public-key cryptosystems, notably ECC digital signatures, to ensure integrity and security within the network. These systems, however, rest on the computational intractability of problems like Integer Factorization and the Discrete Log Problem, a foundation that quantum computing threatens to unsettle.

      In 1994, Peter Shor introduced an algorithm demonstrating that quantum computers could, in theory, solve these problems in polynomial time. This revelation places the security mechanisms of Bitcoin, and indeed all similar cryptosystems, at risk. Recognizing this impending challenge, entities like the NSA and NIST have initiated transitions towards quantum-resistant algorithms, signaling a shift that the cryptographic community must take seriously.

      The evolution of quantum computing from theoretical curiosity to practical concern compels us to contemplate the future of Bitcoin in a post-quantum world. As developers, miners, and users vested in the ecosystem, the responsibility falls to us to anticipate and mitigate these threats. The dialogue around Post-Quantum Cryptography (PQC) is not just academic—it is a necessary evolution of our collective effort to preserve Bitcoin's legacy and ensure its resilience.

      The NSA's 2015 announcement and NIST's subsequent call for quantum-resistant algorithms underscore the urgency of this transition. As a community that has thrived on innovation and adaptation, we are uniquely positioned to lead the charge in securing our technology against quantum vulnerabilities.

      The path forward involves a collaborative effort to research, develop, and eventually deploy quantum-resistant cryptographic algorithms within the Bitcoin protocol. This task is neither small nor simple, but it is essential. Our proactive measures today will safeguard Bitcoin's security, decentralization, and integrity for the future.

      Let this message serve as a call to action. I encourage developers, cryptographers, and all community members to engage in this vital discussion. Together, we can confront the quantum challenge and secure the future of Bitcoin against the unforeseen threats of tomorrow.

      In unity and anticipation,

      [A Legendary Member of Bitcointalk]
      Post
      Topic
      Board Tokens (Altcoins)
      Re: Unveiling Bitcoin's Layer 2 Revolution:
      by
      culexevilman
      on 11/03/2024, 23:14:42 UTC
      **Invitation to Participate in the Ligo OS Testnet**

      Greetings to the Bitcointalk Community,

      We are on the verge of ushering in a groundbreaking chapter in the evolution of blockchain technology. It is with great excitement that we unveil the launch of the **Ligo OS testnet**. This initiative marks a pivotal step forward in our unified quest to forge a digital infrastructure that is not only more secure and efficient but also more user-centric.

      **Why Your Participation Matters**

      The testnet phase is a critical window for discovery and enhancement. It presents us all with a unique opportunity to work hand-in-hand to unearth and address any underlying vulnerabilities, thereby solidifying the foundation of Ligo OS before its progression to the Mainnet phase. This phase is not merely a reflection of our technological aspirations but also a testament to our dedication to transparency, security, and a development philosophy that values community input above all.

      We extend an open invitation for you to engage in this crucial phase. Your active participation promises to not only enhance the Ligo OS ecosystem but also contribute to the broader objective of propelling blockchain technology to new heights. Through testing, feedback, and suggestions, you become an essential contributor to the future trajectory of Ligo OS.

      **Testnet Phase: A Proving Ground**

      Currently, Ligo OS is nestled within the Testnet environment, serving as a vital arena for protocol and security testing, as well as overall system integrity checks. This stage is instrumental in enabling comprehensive testing and fine-tuning, ensuring that any potential flaws are identified and remedied in a controlled setting prior to the Mainnet migration.

      **
      **

      **Anticipating the Mainnet Transition**

      The forthcoming transition to the Mainnet is a momentous milestone, signaling the project's readiness for broader adoption and its official operational debut. This shift transcends a mere technical transition, laying the groundwork for Ligo OS to make a significant impact in its domain.

      Our unwavering commitment to exhaustive Testnet scrutiny underlines our resolve towards ensuring a system characterized by unparalleled security, scalability, and efficiency. As we inch closer to the Mainnet launch, we stand at the precipice of a new era where our collective efforts will begin to bear fruit, contributing significantly to the envisioned digital ecosystem.

      **Join Us**

      Embark on this journey with us by clicking the following link: [**Ligo Testnet Invitation**](https://twitter.com/ligobtc/status/1766410719715643561)

      Together, let's navigate this path of innovation and strive for excellence.

      Warmest regards,

      **The Ligo Team**
      Post
      Topic
      Board Tokens (Altcoins)
      Topic OP
      Unveiling Bitcoin's Layer 2 Revolution:
      by
      culexevilman
      on 11/03/2024, 23:03:50 UTC
      Post
      Topic
      Board Tokens (Altcoins)
      Re: [ANN] ORDI - Ordinals BRC-20 token
      by
      culexevilman
      on 11/03/2024, 22:49:33 UTC
      As we approach the year 2024, a new milestone in the digital currency landscape is on the horizon. ORDI, a currency that has captured the imagination and enthusiasm of the younger generation, is poised to be listed on Coinbase. This event marks a significant evolution in the realm of digital currencies, highlighting the continuous innovation that drives this field forward.

      ORDI, often referred to as the "young people's Bitcoin," embodies the spirit of decentralization and freedom that initially inspired the creation of Bitcoin. However, it has become apparent that Bitcoin has increasingly fallen under the influence of Wall Street, leading to a perception that it now serves the interests of the financial elite rather than those of the broader community. This shift has sparked a debate about the essence of digital currencies and the importance of maintaining their independence from traditional financial systems.

      The comparison between ORDI and Bitcoin, suggesting that "1 ORDI = 1 BTC," is a provocative statement that challenges the current valuation and perception of cryptocurrencies. It serves as a reminder of the original vision of a decentralized and open financial system, free from the control of any single institution or group.

      In the spirit of Satoshi Nakamoto, it is crucial to remember the core principles that gave birth to Bitcoin and the cryptocurrency movement. The introduction of ORDI and its recognition by platforms like Coinbase represents not just the advent of a new digital currency but also a call to reflect on the direction and values of the cryptocurrency ecosystem.

      As we move forward, it is essential to foster an environment where innovation thrives, and new ideas are welcomed. The true strength of cryptocurrencies lies in their ability to empower individuals and facilitate a more inclusive and equitable financial system. Whether ORDI or another currency, the focus should always be on preserving the integrity and transformative potential of digital currencies.

      In this pivotal moment, let us embrace the dynamism and diversity of the cryptocurrency world, while also staying true to the ideals of decentralization, transparency, and community that have guided this journey from the very beginning.
      Post
      Topic
      Board Announcements (Altcoins)
      Re: [ANN]Tautrino (tautrino.com) | First Quasi-Quantum economic simulation
      by
      culexevilman
      on 12/10/2020, 04:18:34 UTC
      As I see in the website, all private sale stage was sold out, congrats with that. What an amazing sell Shocked I really want to hear when the airdrop stage would be launching, it's getting interested since private sale has good news. This tokens should fetch a good price later in the exchange.

      thank you, we are preparing for public sale atm. Code audit on the way for stage 1.
      Post
      Topic
      Board Services
      Re: 🏮🏮 CREATION OF ANN, SIGNATURES, BOUNTY, COMMUNITY MANAGEMENT AND MUCH MORE!
      by
      culexevilman
      on 07/10/2020, 21:22:30 UTC
      super nice. great AAA+ Smiley Smiley
      Post
      Topic
      Board Services
      Re: 🏮🏮 [DESIGN SERVICE] TELEGRAM STICKERS, ILLUSTRATIONS, GRAPHIC DESIGN, ROADMAPS
      by
      culexevilman
      on 07/10/2020, 21:22:07 UTC
      super nice. great AAA+ Smiley Smiley
      Post
      Topic
      Board Announcements (Altcoins)
      Re: [ANN]Tautrino (tautrino.com) | First Quasi-Quantum economic simulation
      by
      culexevilman
      on 07/10/2020, 21:17:50 UTC
      *reserved*
      Post
      Topic
      Board Announcements (Altcoins)
      Topic OP
      [ANN]Tautrino (tautrino.com) | First Quasi-Quantum economic simulation
      by
      culexevilman
      on 07/10/2020, 21:15:55 UTC











      Post
      Topic
      Board Announcements (Altcoins)
      Re: [ANN] ABCMintCore - PQC Rainbow Signature - Quantum Proof Blockchain
      by
      culexevilman
      on 26/12/2019, 10:27:04 UTC
      It seems that Professor Jintai Ding and his PQC Team just destroyed another NIST second round candidate LUOV. Incredible!

      Big news for quantum resistant crypto.  ABC runs "rainbow" which has proven to be solid.

      https://csrc.nist.gov/CSRC/media/Presentations/new-attacks-on-lifted-unbalanced-oil-vinegar/images-media/ding-session-4-paper-pqc2019.pdf
      Post
      Topic
      Board Tokens (Altcoins)
      Re: [ANN][PoW] PegNet: A CPU Mineable Stablecoin and Synthetics Network for DeFi
      by
      culexevilman
      on 11/12/2019, 20:01:19 UTC
      Strongly Supporting PegNet!
      Post
      Topic
      Board Marketplace (Altcoins)
      Topic OP
      ABCMint Buyer/Seller Thread
      by
      culexevilman
      on 16/02/2019, 08:55:23 UTC
      I'm getting inquires from people who are interested in buying ABC (ABC is the world's first quantum proof blockchain - read about it here: https://bitcointalk.org/index.php?topic=5103397.0). If you don't want to mine, or you are an early adopter looking to sell, this is the place for you!
      Post
      Topic
      Board Announcements (Altcoins)
      Re: [ANN] ABCMintCore - PQC Rainbow Signature - Quantum Proof Blockchain
      by
      culexevilman
      on 16/02/2019, 08:27:39 UTC
      what are you developing? you have the paperwork. I'd like to see what degree of protection you're doing, what it'll give us.

      Rainbow, a New Multivariable Polynomial Signature Scheme. Ding J., Schmidt D. (2005)

      https://link.springer.com/chapter/10.1007/11496137_12

      NIST's Post-Quantum Cryptography Standardization

      https://csrc.nist.gov/Projects/Post-Quantum-Cryptography/Post-Quantum-Cryptography-Standardization

      Rainbow is one of the nine remaining candidates for Digital Signature Algorithms that has made it into semifinals

      https://csrc.nist.gov/Projects/Post-Quantum-Cryptography/Round-2-Submissions

      NEW ABCMint Buyer/Seller Thread:
      https://bitcointalk.org/index.php?topic=5110582
      Post
      Topic
      Board Announcements (Altcoins)
      Topic OP
      [ANN] ABCMintCore - PQC Rainbow Signature - Quantum Proof Blockchain
      by
      culexevilman
      on 28/01/2019, 19:29:05 UTC


      Description: ABC is supported by ABCMint Foundation, the world's first Quantum Proof Blockchain with Rainbow Signature implementation, which can be found from Post-Quantum Cryptography project of NIST https://csrc.nist.gov/projects/post-quantum-cryptography

      Rainbow, a New Multivariable Polynomial Signature Scheme. Ding J., Schmidt D. (2005)
      https://link.springer.com/chapter/10.1007/11496137_12

      Official Website: http://abcmint.org

      Telegram Chatroom: https://t.me/abcmintcore

      Source Code Repository:
      - https://github.com/abcmint/abcmint

      Simple Blockexplorer:
      - http://abcmintblock.info

      Simple Blockexplorer 2:
      - http://abcblock.org/


      NEW ABCMint Buyer/Seller Thread:
      - https://bitcointalk.org/index.php?topic=5110582

      Post
      Topic
      Board Currency exchange
      Re: Bolama BTC OTC Based in Dubai
      by
      culexevilman
      on 28/01/2019, 11:35:34 UTC
      hello