Ava Labs, Inc.

A method for storing blockchain data includes receiving a first batch command, the first batch command comprising one or more write operations, and adding one or more entries to a new log file by performing the one or more write operations. The method further includes identifying one or more active entries from one or more previous log files, appending the identified one or more active entries to the new log file, and, based on a determination that the one or more previous log files do not comprise any other active entries, deleting the one or more previous log files.

A method determines a current preference value, the current preference value being one of two possible values. The method receives k preference values, each being one of the possible values. The method defines alpha1, alpha2, and beta2, with alpha1>than k/2 and alpha2≥alpha1. Responsive to a determination that at least alpha1 of the k preference values are different than the current preference value, the method changes the current preference value. Responsive to a determination that fewer than alpha2 of the k preference values are equal to the current preference value, the method sets a counter to zero. Responsive to a third determination that at least alpha2 of the k preference values are equal to the current preference value, the method increases the counter by 1. Responsive to a determination that the counter is equal to beta2, the method provides the current preference value as a finalized output.

Various aspects of the subject technology relate to systems, methods, and machine-readable media for executing transactions in a blockchain network. Various aspects may include receiving one or more transactions issued from an account, the account comprising a bond balance. Aspects may also include partitioning the transactions into a set of validators. Aspects may also include producing, at the set of validators, chunks including the transactions. Aspects may also include replicating the chunks to nodes in the blockchain network. Aspects may also include generating, based on receiving at least a threshold of stake signatures from the nodes, blocks that reference the replicated chunks. Aspects may include distributing, from the bond balance, funds to the nodes for including the replicated chunks in the blocks.

A method and system for generating versions of assets comprising various levels of detail is provided. The method includes generating an institutional subnet with one or more blockchains. The method further includes enabling a set of administrative precompiles for the one or more blockchains, verifying whether a user of the institutional subnet is authorized to interact with the one or more blockchains. The method further includes generating a risk score associated with the user and modifying, based on the risk score, at least one administrative precompile in the set of administrative precompiles for the one or more blockchains based on risk score requirements of each of the blockchains.

Various aspects of the subject technology relate to systems, methods, and machine-readable media for bridging native tokens. Various aspects may include initializing a first blockchain by allocating a plurality of native tokens. Aspects may also include transferring, using a bridge, one or more transactions from a second blockchain to the first blockchain using locked tokens on the second blockchain as collateral. Aspects may also include minting new native tokens at the first blockchain when a value of transactions sum to the plurality of native tokens and the plurality of native tokens are backed by the locked tokens. Aspects may also include reporting, to the second blockchain, the amount of tokens used for the transaction fees in the one or more transactions. Aspects may also include burning, at the second blockchain, tokens corresponding to the amount of tokens used for paying transaction fees.

Various aspects of the subject technology relate to systems, methods, and machine-readable media for enhancing liveness in a blockchain. Various aspects may include running a first consensus protocol. Aspects may also include detecting a liveness attack in the first consensus protocol. Aspects may also include suspending, when the liveness attack is detected, acceptance of new blocks in the first consensus protocol. Aspects may also include broadcasting a preferred block and identifying a highest accepted block in the set of nodes from running the first consensus protocol based on the preferred block. Aspects may also include transitioning from the first consensus protocol to the second consensus protocol and running the second consensus protocol until a consensus value or a new accepted block is decided. Aspects may also include reinstating and resuming running the first consensus protocol based on the new accepted block.

Various aspects of the subject technology relate to systems, methods, and machine-readable media for generating a heterogeneous network of blockchains. The method includes generating a platform blockchain having a single replicated state machine. The method includes generating at least one subnet based in part on the platform blockchain, the subnet including at least one blockchain, the generating causing bonding or burning of a base asset of the platform blockchain. The method includes specifying validators for the at least one subnet. The platform blockchain includes a source of truth for transactions across the subnets.

Various aspects of the subject technology relate to systems, methods, and machine-readable media for improving the privacy of transfers in a distributed ledger. Various aspects may include encrypting a transaction using a first public key corresponding to a first user and a second public key corresponding to a second user. Aspects may also include transmitting the encrypted transaction to a blockchain, the encrypted transaction including at least an encrypted amount, a zero-knowledge proof, and an encrypted balance of the first user. Aspects may also include verifying a correctness of the zero-knowledge proof. Aspects may also include, based on the correctness, executing the transaction through a smart contract of the blockchain and homomorphically updating encrypted balances of the first user and the second user in accordance with the encrypted amount.

Various aspects of the subject technology relate to systems, methods, and machine-readable media for managing training data in artificial intelligence (AI) models. Various aspects may include receiving, at a blockchain, training data from data sources. Aspects may also include validating authenticity of the data sources. Aspects may also include receiving a request for training AI models using the training data and training the models based on an approval of the request. Aspects may also include submitting a first transaction to the blockchain for the training of the models using the training data. Aspects may also include generating a response to a query from a user using the models based on at least a subset of the training data. Aspects may also include submitting a second transaction to the blockchain for leveraging the subset of the training data to generate the response to the query.

Various aspects of the subject technology relate to systems, methods, and machine -readable media for proposing blocks to be added to a blockchain. Various aspects may include performing adding block headers to a first blockchain, wherein the block headers reference a set of validators. Aspects may also include adding a temporal parameter to each block header. Aspects may also include determining, based on a block signature from a block header and from the set of validators, a proposer of candidate blocks for addition to the blockchain. Aspects may also include sampling, based on a temporal parameter, a subset of validators of the set of validators. Aspects may include increasing the proposer to a plurality of proposers from the subset of validators by an incremental quantity based on a comparison of the temporal parameter to a threshold.