Overview of Polkadot Parachain Slot Auction Mechanism
The Polkadot network employs a unique parachain slot auction mechanism, allowing different blockchain projects (i.e., parachains) to bid for the right to connect to the Polkadot Relay Chain. Through this connection, parachains can benefit from the shared security, cross-chain interoperability, and scalability offered by Polkadot. Slots are typically allocated through a "candle auction," with lease periods generally lasting 96 weeks (approximately two years). Projects need to lock Polkadot's native token, DOT, as bidding funds to win a slot.
Acala Wins First Parachain Slot
In Polkadot's inaugural parachain slot auction, launched in November 2021, Acala successfully emerged victorious, securing the first valuable slot. This win marked Acala's official integration as a core component of the Polkadot ecosystem, laying the foundation for its subsequent development.
Detailed Explanation of the Crowdloan Model
Acala raised the necessary DOT tokens to participate in the auction through an innovative "Crowdloan" model. This mechanism allowed global community members to lock their DOT tokens in a smart contract to support Acala's bid for a parachain slot. In return for community support, contributors received Acala's native token, ACA. Acala's first crowdloan campaign was a huge success, raising over 32 million DOT from more than 81,000 unique participants. At the time, these DOT were valued at approximately $1.27 billion.
ACA Token Distribution and DOT Unlock
Acala established a reward pool totaling 17% of the total ACA supply (i.e., 170 million ACA) for crowdloan participants, with 15% as base rewards and 2% for additional bonuses. The ACA tokens received by contributors are typically unlocked in batches, for example, 20% immediately and the remaining 80% linearly over the 96-week parachain lease period. Concurrently, the DOT tokens locked in the crowdloan will automatically unlock and be returned to the respective contributors after Acala's 96-week parachain lease period concludes. Acala's first parachain lease period ran from December 17, 2021, to October 24, 2023.
Acala Network Launch and Ecosystem Positioning
The Acala network's genesis block officially launched on December 18, 2021, marking its full上线 as a Polkadot parachain. The Acala team, led by co-founders Fuyao Jiang, Ruitao Su, Bette Chen, and Bryan Chen, is dedicated to building Acala into a decentralized finance (DeFi) hub within the Polkadot ecosystem. Its core services include the decentralized stablecoin aUSD, liquid staking derivative LDOT, and a decentralized exchange. Acala also continuously implements network upgrades, such as the Acala 2.0 Sinai upgrade launched in June 2024, to enhance its functionality and performance.
Key Stakeholders
- Acala Team: As the core drivers of the project, they are responsible for the design, development, and operation of the Acala network, and are committed to its DeFi positioning within the Polkadot ecosystem.
- Polkadot: As the underlying multi-chain network, it provides shared security and interoperability, offering infrastructure support for the operation of parachains like Acala.
- Community Contributors: Over 81,000 community members actively supported Acala through crowdloans, playing a crucial role in its success in winning the slot.
