BA-03 · LESSON 02

The genesis and early network

KEY DEFINITIONS

Terms used in this lesson

Coinbase transaction: The special first transaction in a Bitcoin block, which claims permitted subsidy and fees and has no ordinary prior-output input.
Block subsidy: New bitcoin that consensus permits a block's coinbase transaction to create at a particular height.
BTC: The common market ticker for bitcoin.

Bitcoin began with a public paper, public software, and a first block. The launch sequence matters because nobody received private control of the ledger rules.

45 min Difficulty 1/5 Not started

VISUAL MODEL

See the whole mechanism before going step by step

Use the diagrams to orient yourself. Then the guided explanation below teaches every part in depth.

4 explanatory views

CONCEPT-SPECIFIC MAP · state machineOne valid action transforms a known stateSelect any state to inspect its exact role.

RELATIONSHIP MAPOrdered mechanism flow

01
BEFOREKnown state
Identify the facts and objects that exist before the action.
02
ACTIONThe genesis and early network
The The genesis and early network lesson isolates the event that proposes a change.
03
RULEDeterministic check
The enforcing rule accepts or rejects the proposed transition.
04
AFTERSuccessor state
Accepted work creates a new state without silently changing the prior facts.
05
FAILUREState unchanged
A failed condition must not produce a partially accepted successor.

Rule shown: A valid transition names the prior state, action, enforcing rule, and successor state.

STAGE 1 OF 5BEFORE: Known state

Identify the facts and objects that exist before the action.

Governing relationship: A valid transition names the prior state, action, enforcing rule, and successor state. Complete path: 1. BEFORE, Known state. Identify the facts and objects that exist before the action. 2. ACTION, The genesis and early network. The The genesis and early network lesson isolates the event that proposes a change. 3. RULE, Deterministic check. The enforcing rule accepts or rejects the proposed transition. 4. AFTER, Successor state. Accepted work creates a new state without silently changing the prior facts. 5. FAILURE, State unchanged. A failed condition must not produce a partially accepted successor.

1. State transitionWhat exists, what changes, and what results

BEFORE

Order four dated milestones from the network's launch.

MECHANISM

Satoshi Nakamoto announced Bitcoin software version 0.1 on the cryptography mailing list on 8 January 2009. The packaged code archive is dated 9 January and is a distinct rel…

AFTER

A chronology separates documented network events from later stories about motives or adoption and keeps the announcement distinct from the packaged archive.

Text equivalent: Starting from Order four dated milestones from the network's launch. The mechanism begins when Satoshi Nakamoto announced Bitcoin software version 0.1 on the cryptography mailing list on 8 January 2009. The packaged code archive is dated 9 January and is a distinct release artifact. Anyone could run the same vali… The resulting lesson is A chronology separates documented network events from later stories about motives or adoption and keeps the announcement distinct from the packaged archive.

2. Mechanism pathSelect a stage to inspect its job

STAGE 1 OF 5

Publish code and rules

Satoshi Nakamoto announced Bitcoin software version 0.1 on the cryptography mailing list on 8 January 2009. The packaged code archive is dated 9 January and is a distinct release artifact. Anyone could run the same validation and mining rules rather than request an account from an issuer.

Complete path: 1. Publish code and rules: Satoshi Nakamoto announced Bitcoin software version 0.1 on the cryptography mailing list on 8 January 2009. The packaged code archive is dated 9 January and is a distinct release artifact. Anyone could run the same validation and mining rules rather than request an account from an issuer. 2. Create the genesis anchor: The genesis block anchors the chain and contains a newspaper headline in its coinbase data. Its subsidy is not spendable under the original implementation. 3. Bootstrap peers and mining: Early nodes discovered one another through simpler mechanisms than today's network and often mined with CPUs because difficulty and competition were low. 4. Transfer the first coins: The first known person-to-person Bitcoin transaction sent 10 bitcoin, commonly written 10 BTC, from Satoshi to Hal Finney in block 170. 5. Grow beyond one maintainer: More users, miners, developers, exchanges, and implementations increased economic use and reduced dependence on the creator, though early concentration remains historically important.

3. Rule and failure boundaryWhat accepts the result and where it can stop

ACCEPTED PATH

Dates and directly evidenced claims must match reproducible documents, release artifacts, and chain data.

CHANGED CONDITION

A claim placing block 170 before genesis contradicts timestamped artifacts, while motives inferred from genesis text remain interpretation rather than direct proof.

Important distinction: Bitcoin began as a mature decentralized network with today's mining and exchange infrastructure. It began as a tiny experimental network with concentrated participation. Decentralization and market infrastructure developed over time.

Text equivalent: The accepted path is enforced by Dates and directly evidenced claims must match reproducible documents, release artifacts, and chain data. If the required condition changes, A claim placing block 170 before genesis contradicts timestamped artifacts, while motives inferred from genesis text remain interpretation rather than direct proof.

Loading lesson visuals...

Learn the idea

Bitcoin's genesis block is the first block in its chain, mined in January 2009. A coinbase transaction is the special first transaction in a block; it claims the permitted block subsidy and fees, and its coinbase input can carry arbitrary data. The subsidy is newly permitted bitcoin issuance at that height. Early software combined a wallet, miner, node, and peer protocol. The network began with very few participants, so its survival depended on public code, voluntary adoption, and enough honest operation to keep producing and relaying valid blocks.

GUIDED EXPLANATION1/5 ideas inspected

Publish code and rules

The worked example follows the explanation

Inspect every idea above to open it.

Important distinction“Bitcoin began as a mature decentralized network with today's mining and exchange infrastructure.”

It began as a tiny experimental network with concentrated participation. Decentralization and market infrastructure developed over time.

FINISH LEARNING FIRST

The questions unlock after every required learning activity

Inspect every guided idea, open the worked example, rebuild its mechanism, and complete the deterministic lesson tool. Your progress is saved automatically.