Bitcoin (BTC) is the world's first cryptocurrency, laying the foundation for the explosive growth of the crypto market. It was conceived in 2007 and officially launched in 2009 by the mysterious figure Satoshi Nakamoto.
Bitcoin is ranked number one in the cryptocurrency market. It operates on open-source software and isn't controlled by any organization or individual. This decentralized system allows peer-to-peer transactions without intermediaries, ensuring transparency and security for all transactions.
Important milestones for Bitcoin:
- Bitcoin 2008:
On October 31, 2008, at the peak of the global financial crisis and just six weeks after the famous investment bank Lehman Brothers declared bankruptcy, a person or group using the name "Satoshi Nakamoto" released the Bitcoin Whitepaper titled "Bitcoin: A Peer-to-Peer Electronic Cash System" through a cryptographic mailing list. The Whitepaper proposed a new electronic currency system allowing direct online payments between parties without relying on any trusted third parties. Soon after the release, Satoshi implemented the Bitcoin software as open-source code.
- Bitcoin 2009:
On January 3, 2009, Bitcoin was created when Satoshi Nakamoto mined the genesis block. This first block contained a reference to a headline from "The Times" stating "Chancellor on the Brink of Second Bailout for Banks," understood as a political statement on the global financial system. This event marked the birth of the world's first decentralized digital currency without any ownership.
- Bitcoin 2010:
In August 2010, a vulnerability in the network was discovered, allowing transactions to exceed the limit. This led to the creation of 184 billion BTC, increasing the total BTC supply at that time by 49,000 times. The developers addressed the issue by updating the Bitcoin software to a new version with a maximum transaction value limit and rectifying the coins created during the incident.In December 2010, Satoshi Nakamoto handed control of the source code repository and the network alert key to Gavin Andresen, a contributing developer. This marked Satoshi's withdrawal from active participation in Bitcoin development, transitioning the project to a more collaborative and decentralized process. The reason for this withdrawal remains unknown, and Satoshi's identity is still undisclosed.
- Bitcoin 2013:
In March 2013, a software bug in Bitcoin Core v0.8 caused a blockchain split after a miner created a large block (block 225,430). This split led to a reorganization of 24 blocks, affecting over 5,000 transactions. The issue was resolved by miners downgrading to blockchain v0.7.
- Bitcoin 2017:
In August 2017, the Segregated Witness (SegWit) upgrade changed how data is stored on the Bitcoin blockchain. By separating signature (authentication) data from transaction data, SegWit allowed for more transactions to be stored in each block, increasing network capacity. Additionally, SegWit enabled new transaction types, including the Lightning Network, a Layer 2 scaling solution for offline microtransactions with reduced fees.
- Bitcoin 2021:
Another soft fork, the Taproot upgrade, was activated on November 14, 2021. Taproot introduced Schnorr signatures to Bitcoin, allowing complex multi-signature wallets to be verified in batches rather than individually. Besides offering a more efficient method for transaction processing, Schnorr signatures enhanced privacy by obscuring the differences between multi-signature and single-signature transactions. The upgrade included three Bitcoin Improvement Proposals (BIP): BIP-340, BIP-341, and BIP-342.
- Bitcoin 2023:
Combined with SegWit, Taproot's advanced scripting features facilitated the development of inscriptions, a method of embedding arbitrary data, such as images or text, into Bitcoin transaction witness data. Inscriptions can be used for various applications, including digital art, collectibles, tokenized real-world assets, and creating non-fungible tokens (NFTs) when paired with an NFT protocol like Ordinals.The latest release of Bitcoin Core, v26.0, occurred on December 7, 2023.
- Bitcoin 2024:
Bitcoin block rewards follow the concept of "halving," which has reduced to 6.25 BTC per block. Every 210,000 blocks (approximately every four years), the reward for newly mined BTC halves. The reward will continue to decrease until the maximum supply of 21 million BTC is mined, around 2140. The most recent halving occurred in April 2024 at block 840,000. At that time, the block reward was further reduced to 3.125 BTC.