The concept of rare Satoshi did not appear recently, but compared to the popularity of BRC 20, it did not go out of the circle in time. However, this concept, which was born with the Ordinals protocol, seems to be showing signs of becoming popular in the near future.

As explained in the Ordinals theory document, Bitcoin’s recurring events are an excellent vehicle for imparting rarity. These recurring events include:

• Block: A new block will be mined about every 10 minutes, always this value.

• Difficulty Adjustment: Every 2016 blocks, or every two weeks, the Bitcoin network adjusts the difficulty target based on changes in the hash rate.

• Halving: Every 210,000 blocks, that is, every four years, the rewards mined in each block are halved.

• Cycle: Every 6th halving, something magical happens: the halving and difficulty adjustment happen at the same time. This is called an "overlap" and the period of time between two overlaps is called a "cycle". "Overlap" occurs approximately every 24 years. The first overlap should occur around 2032.

Then based on these periodic events, we can use the Ordinals protocol to sort the smallest unit of Bitcoin, "Satoshi", and filter out different rarity levels, for example:

• common: not the first satoshi of the block

• uncommon: the first satoshi of each block

• rare: the first satoshi of each difficulty adjustment cycle

• epic: the first Satoshi of each halving period

• legendary: the first Satoshi of each cycle

• mythic: the first satoshi of the genesis block

The total supply and current supply of these rarities can also be calculated based on the number of Satoshis mined:

Total Supply:

common: 2.1 gigabit

uncommon: 6, 929, 999 

rare: 3437 

epic: 32 

legendary: 5 

mythic: 1 

Current supply of each rarity:

common: 1.9 Gigabit

uncommon: 745, 855 

rare: 369 

epic: 3 

legendary: 0 

mythic: 1 

Judging from the above deduction, Rare Satoshi seems to give everyone the fun of exploring and archaeological Bitcoin. Therefore, collecting rare satoshis has become one of the most popular ways to play in the Ordinals ecosystem. There are currently many websites and tools that can check whether your wallet contains rare Satoshi, such ashttps://sating.io, as long as you have traded BTC, you have the opportunity to check out rare Satoshi. The detection method is also very simple. Enter the website, enter your bitcoin address, and click to query.

In addition to query tools, there are projects around the concept of Rare Satoshi, such as:

1. Rare Satoshi Society (Token RSSC)

Rare Satoshi Society is a community of blockchain enthusiasts and the premier meeting place for ordinal degens and sat hunters. This community is collecting and trading rare Satoshi, and is currently the community with the largest stock of rare Satoshi. In addition, the Rare Satoshi Society released the ".sats" membership pass, which will give exclusive access to alpha, ordinals, celebrities' gifts, white lists, etc.

2. $XING

$XING is also a rare Satoshi concept. Unlike Rare Satoshi Society, $XING has no practical use at present. Its rarity lies in the fact that it is the first token deployed in "uncommon Satoshi", and the "uncommon Satoshi ” was mined only 13 days before $XING was deployed.

3. $Wolv

$Wolv was the first BRC 20 token deployed on May 22, 2010 in the famous transaction of 10,000 Bitcoins for two Papa John's pizzas.

4. SatsHunters (token SHNT)

SatsHunters is a project to find rare satoshis for individuals or projects. Its tool quickly scans wallets and gives you all the dates, times and blocks in which your satoshis were mined, giving you a clear picture of potentially rare satoshis waiting to be discovered in your personal wallet. Additionally, Sats Hunters released a taproot collection of 1138 unique images. Holding this NFT can gain access to different functions of earlier projects.

5. Nullish

Nullish has launched a generative art collection called Uncommon Patterns, which consists of 50 pieces, each arranged by sat age and inscribed on a rare Satoshi. And with all 50 Uncommon Patterns among the top 100 rare inscriptions in Bitcoin, the piece will be sold via PSBT (Partially Signed Bitcoin Transactions) on Gamma.