iloveraresats.com — Rare Sat Explorer

Protocol

First sat of a whole bitcoin — the number ends in eight zeros.First sat of a block. Excludes blocks that are rare, epic, legendary or mythic — the rarity ladder is exclusive.First sat of a difficulty adjustment period (every 2,016 blocks).First sat of a halving epoch (every 210,000 blocks).First sat of a cycle (every 1,260,000 blocks). None exist yet — the first arrives around 2032.The first sat of the genesis block. Exactly one, and unspendable.Last sat of a whole bitcoin — the number ends in 99999999.Last sat of a block. Excludes blocks that are black rare or black epic.Last sat of a difficulty adjustment period.Last sat of a halving epoch.

Historical

The 100,000,000 sats in block 9 whose numbers begin with 450.Every sat mined in block 9.Every sat mined in block 78.Every sat mined in block 286.Every sat mined in block 666.Every sat mined in block 999.Every sat mined in the first 1,000 blocks.Sats mined in January 2009.Sats mined in 2009.

Events

The 10 BTC of the first bitcoin transaction, Satoshi to Hal Finney, 2009-01-12.Sats from 19 blocks mined by Satoshi that were later spent (Whale Alert research).Sats from 17 blocks attributed to Hal Finney (Bitcoin.com research).The 10,000 BTC spent on two pizzas on 2010-05-22.Sats traced to the murder-for-hire payments in the Silk Road case.Sats from the first image ever bought with bitcoin.The 29,656.5 BTC sold in the first US Marshals auction of seized Silk Road coins, 2014-06-27.Every sat mined in block 938,713 — Parasite Pool's first block.

Palindrome

The sat number reads the same forwards and backwards. The three tags beside it are all subsets of this one. e.g. 1234554321Perfect Palinception — one palindromic substring repeated to form the whole number, and that substring uses at least 2 distinct digits. The narrowest of the family. e.g. 121121121121 = 121·121·121·121Uniform Palinception — a palindrome that splits into equal-length chunks of at least 3 digits, each chunk itself a palindrome. e.g. 454141060141454 = 454·141·060·141·454Sequence Palindrome — a palindromic number containing at least 3 identical digits in a row. e.g. 3275433345723, the 333 in the middle

Digits

The sat number uses exactly 1 distinct digit.The sat number uses exactly 2 distinct digits.The sat number uses exactly 3 distinct digits.

Others

Every sat mined in a block whose HEIGHT is a palindrome (1, 99, 12321 …). The height is the palindrome, not the sat number — this is unrelated to the Palindrome tags.The sat's base-26 name matches a word in ord's 12,450-word list.The sat number is a Fibonacci number.