diff --git a/book/src/ed_overview.md b/book/src/ed_overview.md index 35ff141cb0..534f9989ef 100644 --- a/book/src/ed_overview.md +++ b/book/src/ed_overview.md @@ -8,7 +8,7 @@ These protocol-based rewards, to be distributed to participating validation and Transaction fees are market-based participant-to-participant transfers, attached to network interactions as a necessary motivation and compensation for the inclusion and execution of a proposed transaction (be it a state execution or proof-of-replication verification). A mechanism for long-term economic stability and forking protection through partial burning of each transaction fee is also discussed below. -A high-level schematic of Solana’s crypto-economic design is shown below in **Figure 1**. The specifics of validation-client economics are described in sections: [Validation-client Economics](ed_validation_client_economics.md), [State-validation Protocol-based Rewards](ed_vce_state_validation_protocol_based_rewards.md), [State-validation Transaction Fees](ed_vce_state_validation_transaction_fees.md) and [Replication-validation Transaction Fees](ed_vce_replication_validation_transaction_fees.md). Also, the chapter titled [Validation Stake Delegation](ed_vce_validation_stake_delegation.md) closes with a discussion of validator delegation opportunties and marketplace. The [Replication-client Economics](ed_replication_client_economics.md) chapter will review the Solana network design for global ledger storage/redundancy and replicator-client economics ([Storage-replication rewards](ed_rce_storage_replication_rewards.md)) along with a replicator-to-validator delegation mechanism designed to aide participant on-boarding into the Solana economy discussed in [Replication-client Reward Auto-delegation](ed_rce_replication_client_reward_auto_delegation.md). An outline of features for an MVP economic design is discussed in the [Economic Design MVP](ed_mvp.md) section. Finally, in chapter [Attack Vectors](ed_attack_vectors.md), various attack vectors will be described and potential vulnerabilities explored and parameterized. +A high-level schematic of Solana’s crypto-economic design is shown below in **Figure 1**. The specifics of validation-client economics are described in sections: [Validation-client Economics](ed_validation_client_economics.md), [State-validation Protocol-based Rewards](ed_vce_state_validation_protocol_based_rewards.md), [State-validation Transaction Fees](ed_vce_state_validation_transaction_fees.md) and [Replication-validation Transaction Fees](ed_vce_replication_validation_transaction_fees.md). Also, the chapter titled [Validation Stake Delegation](ed_vce_validation_stake_delegation.md) closes with a discussion of validator delegation opportunties and marketplace. Additionally, in [Storage Rent Economics](ed_storage_rent_economics.md), we describe an implementation of storage rent to account for the externality costs of maintaining the active state of the ledger. The [Replication-client Economics](ed_replication_client_economics.md) chapter will review the Solana network design for global ledger storage/redundancy and replicator-client economics ([Storage-replication rewards](ed_rce_storage_replication_rewards.md)) along with a replicator-to-validator delegation mechanism designed to aide participant on-boarding into the Solana economy discussed in [Replication-client Reward Auto-delegation](ed_rce_replication_client_reward_auto_delegation.md). An outline of features for an MVP economic design is discussed in the [Economic Design MVP](ed_mvp.md) section. Finally, in chapter [Attack Vectors](ed_attack_vectors.md), various attack vectors will be described and potential vulnerabilities explored and parameterized.

== Solana Economic Design Diagram ==

diff --git a/book/src/ed_storage_rent_economics.md b/book/src/ed_storage_rent_economics.md new file mode 100644 index 0000000000..474cd8cef3 --- /dev/null +++ b/book/src/ed_storage_rent_economics.md @@ -0,0 +1,18 @@ +## Storage Rent Economics + +Each transaction that is submitted to the Solana ledger imposes costs. Transaction fees paid by the submitter, and collected by a validator, in theory, account for the acute, transacitonal, costs of validating and adding that data to the ledger. At the same time, our compensation design for replicators (see [Replication-client Economics](ed_replication_client_economics.md)), in theory, accounts for the long term storage of the historical ledger. Unaccounted in this process is the mid-term storage of active ledger state, necessarily maintined by the rotating validator set. This type of storage imposes costs not only to validators but also to the broader network as active state grows so does data transmission and validation overhead. To account for these costs, we describe here our preliminary design and implementation of storage rent. + +Storage rent can be paid via one of two methods: + +Method 1: Set it and forget it + +With this approach, accounts with two-years worth of rent deposits secured are exempt from network rent charges. By maintaining this minimum-balance, the broader network benefits from reduced liquitity and the account holder can trust that their `Account::data` will be retained for continual access/usage. + +Method 2: Pay per byte + +If an account has less than two-years worth of deposited rent the network charges rent on a per-epoch basis, in credit for the next epoch (but in arrears when necessary). This rent is deducted at a rate specified in genesis, in lamports per kilobyte-year. + +For information on the technical implementation details of this design, see the [Rent](rent.md) section. + + +