Parity Technologies’ Polkadot has launched a testnet, Rococo, of the protocol’s first parachain specification, according to a blog Thursday. Parachains underlie Parity Tech’s vision of a “protocol for protocols.”

• Rococo allows developers to “register” a Substrate-based blockchain as part of Polkadot’s grander parachain network.
• Substrate is a blockchain building kit for other networks to interoperate as a Polkadot parachain.
• Rococo is the first test of inter-blockchain communication through its Relay Chain logic.
• Rococo launched as a Proof-of-Authority (PoA) network under the governance of Parity Technologies. The testnet will begin with three parachains, the firm said.

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