Taproot Assets v0.3.0-alpha: First Mainnet Release

• "Today we're excited to release the mainnet alpha of the Taproot Assets daemon, providing a feature-complete developer experience for issuing, managing, and exploring stablecoins or other assets on the bitcoin blockchain."
• "This release also begins forward compatibility, which means the protocol will not have any more breaking changes that would affect assets issued on mainnet."
• "This mainnet release of the protocol supports on-chain functionality, with Lightning support coming soon."
• "IMPORTANT NOTE: To avoid loss of funds, it's imperative that you read the Operational Safety Guidelines before using tapd on mainnet!"

What’s new

• Automatically generated test vectors for all TLV encodings and MS-SMT tree and virtual machine logic
• Chain re-organization protection and automatic proof re-generation
• Add ability to burn assets
• Asset-level coin locking/leasing
• Fully implemented Multiverse tree structure to support syncing both issuance and transfer proofs
• New type of proof courier: Universe RPC courier, transfers proofs from sender to recipient via any public or private universe server
• Proof courier type and server address can now be specified
• Prometheus metrics export support
• Added load test utility for generating asset mints and transfers on regtest
• Improved universe sync speed by batching database calls
• Easy distinguishability between proof files and individual proofs with magic byte prefixes
• Future proof all data structures by adding version fields
• Tapscript support for group keys to enable richer reissuance workflows
• Enable mainnet as a supported Bitcoin network for tapd
• Many many bugs fixed and a lot of code cleaned up

RPC changes

• Support for exporting and importing proofs for individual transfers to/from Universes
• The DecodeProof RPC now supports both proof files and individual proofs
• Support for custom asset metadata types
• Metadata is limited to 1 MiB
• Statistics on the total number of issuances and asset groups for Universe servers
• Better information in the Universe individual asset statistics RPC responses
• Added more information on the minting RPC calls, can now see assets in batch and correct batch state
• Runtime configuration of universe sync settings
• Asset related RPCs now have the asset’s version as a new field
• Proof related Universe RPC calls now expect a proof type alongside the ID to distinguish between issuance and transfer proofs

Migration from previous versions

• There is no migration path, you HAVE to start with a fresh data directory by completely deleting the ~/.tapd directory.
• The public Lightning Labs Universe server was reset as well, all assets minted before v0.3.0-alpha cannot be used anymore
• This is the last breaking version, all assets minted with v0.3.0-alpha and later will be working in all future versions
• The ImportProof RPC call is now only available in development mode, since transferring proofs over private Universe servers is now possible and should be used
• Issuance proofs now have two new fields, one for the genesis reveal and one for the group key reveal

Full Changelog: v0.2.3...v0.3.0

GitHub Repo
Blog Post / Archive