[Crypto projects](https://revain.org/projects/) › Auroracoin

# Auroracoin (AUR): how it works, supply and reviews

## In short

- **Type**: Own proof-of-work blockchain, originally based on Litecoin
- **Maximum supply**: 23,318,098 AUR; after 5,345,000 AUR were destroyed, total supply is 17,973,098 AUR
- **Risks and caveats**: Transactions are irreversible and there is no central authority to complain to if something goes wrong.
- **Checked**: 31 October 2026

## Key facts

- **Ticker**: AUR
- **Official site**: [en.auroracoin.is](https://en.auroracoin.is/)

Key facts checked on 31 October 2026 against official sources.

## What is Auroracoin

Auroracoin (AUR) is a proof-of-work cryptocurrency for Iceland, started on 24 January 2014. It was first based on Litecoin and in 2016 adopted DigiByte's multi-algorithm mining. Half of the coins were pre-mined for an airdrop to Icelandic residents; unclaimed coins were destroyed.

## Network and consensus

| Parameter | Details |
|---|---|
| Type | Own proof-of-work blockchain, originally based on Litecoin |
| Consensus | Multi-algorithm proof of work: Scrypt, SHA256D, Qubit, Skein and Groestl |
| Block time | 61-second target since the May 2016 multi-algorithm change |

## Supply and issuance

| Parameter | Details |
|---|---|
| Maximum supply | 23,318,098 AUR; after 5,345,000 AUR were destroyed, total supply is 17,973,098 AUR |
| Initial distribution | 50% pre-mine for an airdrop to Icelandic residents in 2014-2015, using national ID; about half claimed, the rest destroyed |
| Unclaimed airdrop | Roughly half of the airdrop was claimed; the other half was verifiably destroyed |

## What AUR is used for

- AUR is a payment currency for Iceland; merchants can accept it with an ordinary Auroracoin wallet.
- AUR is issued to miners as block rewards.

## Who develops and governs Auroracoin

- **Developer**: An international group of volunteers (team listed: Myckel Habets, Mikael Hannes, Martin Jansen)
- **Governance**: No owner or central company
- **Open source**: MIT licence, code on GitHub (aurarad/Auroracoin)

## History

| Date | Event |
|---|---|
| 24 January 2014 | Auroracoin starts as a cryptocurrency for Iceland. |
| 2014 | Airdrop of the 50% pre-mine to Icelandic residents begins (2014-2015). |
| May 2016 | Switch to multi-algorithm proof of work and a 61-second block target. |
| 28 February 2017 | Release 2017.02.1.0 removes Tor/Onion network support. |
| 21 January 2021 | Hotfix release 2021.01.2.0 after a chain split caused by release 2021.01.1.0. |
| 28 June 2022 | Latest wallet release 2022.06.1.0 brings the code closer to Bitcoin Core. |

## Security and audits

- Open-source (MIT) code; official wallets for Windows, macOS and Linux are published with SHA-256 checksums.
- Release 2021.01.1.0 caused a chain split; users were told to upgrade immediately to the 2021.01.2.0 hotfix.

## Security incidents

No security incident is recorded in the sources checked on 31 October 2026 (the company’s own channels and incident databases): [defillama.com/hacks](https://defillama.com/hacks), [hacked.slowmist.io](https://hacked.slowmist.io/), [rekt.news/leaderboard](https://rekt.news/leaderboard/), [github.com/aurarad/Auroracoin](https://github.com/aurarad/Auroracoin/releases), [en.auroracoin.is](https://en.auroracoin.is/)

## Risks and caveats

- Transactions are irreversible and there is no central authority to complain to if something goes wrong.
- The ledger is public, so payments can be linked to identities over time.
- The newest wallet release dates from June 2022, and a 2021 release caused a chain split.

## Official links

- Website: [en.auroracoin.is](https://en.auroracoin.is/)
- Source code: [github.com/aurarad/Auroracoin](https://github.com/aurarad/Auroracoin)
- Docs: [en.auroracoin.is/mining-schedule](https://en.auroracoin.is/mining-schedule/)

## Questions and answers

**What is Auroracoin?**

Auroracoin (AUR) is a proof-of-work cryptocurrency for Iceland, started on 24 January 2014 and originally based on Litecoin.

**What is the maximum supply of Auroracoin?**

The maximum supply is 23,318,098 AUR; 5,345,000 AUR were verifiably destroyed, leaving a total supply of 17,973,098 AUR.

**How is Auroracoin mined?**

Since May 2016 Auroracoin uses five proof-of-work algorithms (Scrypt, SHA256D, Qubit, Skein and Groestl) with a 61-second block target.

**How was Auroracoin distributed?**

Half of the coins were pre-mined for an airdrop to Icelandic residents in 2014-2015 using national ID; about half were claimed and the rest destroyed.

## Sources

- [Auroracoin - English site](https://en.auroracoin.is/)
- [Auroracoin - Mining schedule](https://en.auroracoin.is/mining-schedule/)
- [Auroracoin - GitHub repository (README)](https://github.com/aurarad/Auroracoin)
- [Auroracoin - chainparams.cpp (stable)](https://github.com/aurarad/Auroracoin/blob/stable/src/chainparams.cpp)
- [Auroracoin - GitHub releases](https://github.com/aurarad/Auroracoin/releases)

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Page updated: 2026-11-01

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Source: https://revain.org/projects/auroracoin/