What is IOTA?
- Author
- CRYPTO PORT Editorial
- Published
- Updated
- Reading time
- 5 min
In short
IOTA set out to enable feeless micro-transactions between machines, starting from the Tangle — a directed acyclic graph rather than a chain of blocks. Its long-standing reliance on a central node called the Coordinator was its main criticism, and the design has been substantially reworked in stages to remove it.
Key points
- Began with the Tangle, a DAG in which each transaction approves earlier ones instead of chaining blocks
- Its original goal was feeless micro-payments between IoT devices
- Relied on a central node, the Coordinator, to secure the network
- Has gone through several redesigns aimed at removing that dependency
Definition
A distributed ledger project that records transactions in a directed acyclic graph, developed with the goal of feeless micro-payments between devices.
IOTA assumed a world where IoT devices exchange fractions of a cent. Any fee-bearing design breaks down when the fee exceeds the payment. The Tangle was conceived as a structure needing no miner rewards: whoever sends a transaction validates two earlier ones.
That structure is weak to attack when participation is low. From launch, IOTA relied on a foundation-run node called the Coordinator, which periodically issued reference points that determined which transactions were confirmed. The centralisation this implied drew criticism for years.
Removing the Coordinator proceeded in stages, moving to a design where nodes vote on confirmation. A later overhaul added an object-based state model, a Move-family execution environment and delegated proof of stake, so the network now differs considerably from the original Tangle-only design.
Announced use cases include industrial data logging, digitising logistics and trade documents, and pilots with public agencies. The pitch in these cases is the ability to record large volumes of data without per-transaction fees.
Watch out for
- · In 2020, funds were stolen through a third-party service embedded in the official Trinity wallet, and the network was temporarily halted
- · The design has been reworked several times, so older explanations may not match the current specification
- · Having no fees means spam resistance has to come from elsewhere, and that mechanism has changed over time
Frequently asked questions
If there are no fees, can I send unlimited transactions?
No. In place of fees, the protocol limits issuance rates and allocates network resources to curb spam. No ledger can allow unlimited free transactions.