InstrumentMetaData

Table

Description: Metadata describing financial instruments held in account balances. Provides descriptive, non-quantifiable information about instruments to enable proper identification and categorization of holdings within an account.

note

The protobuf file is the authoritative source of documentation. Please refer to the Protobuf tab when in doubt about field definitions, validation rules, or type specifications.

Field	Type	Description	Required	Validation
name	string	The official or commonly recognized name of the instrument. Examples: "Apple Inc.", "Bitcoin", "US Dollar".	No	None
type	InstrumentType	Classification category of the financial instrument. Determines the instrument's fundamental nature and trading characteristics.	No	None
unit	Unit	Standard unit of measurement for quantifying the instrument. Examples: SHARE for equities, OUNCE for precious metals, NOTE for bonds.	No	None

Protobuf

syntax = "proto3";

package meshtrade.wallet.account.v1;

import "buf/validate/validate.proto";
import "meshtrade/type/v1/ledger.proto";
import "meshtrade/type/v1/amount.proto";
import "meshtrade/studio/instrument/v1/instrument_type.proto";
import "meshtrade/studio/instrument/v1/unit.proto";
import "google/protobuf/timestamp.proto";

option go_package = "github.com/meshtrade/api/go/wallet/account/v1;account_v1";
option java_package = "co.meshtrade.api.wallet.account.v1";

/*
   Account resource for holding and managing financial instruments on blockchain ledgers.

   Accounts provide the foundational wallet infrastructure for the Mesh platform, enabling
   secure storage and management of digital assets across multiple blockchain networks.
   Each account is tied to a specific ledger (Stellar, Solana, Bitcoin, Ethereum etc.) and
   can hold multiple instrument balances within that network's ecosystem.
*/
message Account {
  /*
     The unique resource name for the account.
     Format: accounts/{ULIDv2}.
     This field is system-generated and immutable upon creation.
     Any value provided on creation is ignored.
  */
  string name = 1 [(buf.validate.field) = {
    cel: {
      id: "name.format.optional",
      message: "name must be empty or in the format accounts/{ULIDv2}",
      expression: "size(this) == 0 || this.matches('^accounts/[0123456789ABCDEFGHJKMNPQRSTVWXYZ]{26}$')"
    }
  }];

  /*
     The resource name of the parent group that owns this account.
     This field is required on creation and establishes the direct ownership link.
     Format: groups/{ULIDv2}.
  */
  string owner = 2 [(buf.validate.field) = {
    required: true,
    string: {
      len: 33,
      pattern: "^groups/[0123456789ABCDEFGHJKMNPQRSTVWXYZ]{26}$"
    }
  }];

  /*
     The Unique Mesh Account Number for simplified account identification.
     Format: 7-digit number starting with 1 (e.g., 1234567).
     This field is system-generated and immutable.
     Any value provided on creation is ignored.
  */
  string number = 5 [(buf.validate.field) = {
    cel: {
      id: "number.format.optional",
      message: "number must be empty or a 7-digit account number starting with 1",
      expression: "size(this) == 0 || this.matches('^1[0-9]{6}$')"
    }
  }];

  /*
     The account's blockchain address on the specified ledger network.
     Format varies by ledger e.g. Ed25519 public key for Stellar/Solana,
     secp256k1 address for Bitcoin/Ethereum.
     This field is system-generated and immutable.
     Any value provided on creation is ignored.
  */
  string ledger_id = 6 [(buf.validate.field) = {
    string: {
      max_len: 255
    }
  }];

  /*
     The ledger on which the account exists (e.g., Stellar, Solana, Bitcoin, Ethereum, etc.).
     This field is required on creation to specify the target ledger for the account.
  */
  meshtrade.type.v1.Ledger ledger = 7 [(buf.validate.field) = {
    required: true,
    enum: {
      defined_only: true,
      not_in: [0]
    }
  }];

  /*
     Human-readable name for organizational identification and display.
     User-configurable and non-unique across the system.
  */
  string display_name = 8 [(buf.validate.field) = {
    required: true,
    string: {
      min_len: 1,
      max_len: 255
    }
  }];

  /*
     Timestamp of the last live ledger data synchronization.
     Only populated when accounts are retrieved with populate_ledger_data=true.
     This timestamp indicates when balances and state were last fetched from the blockchain.
  */
  google.protobuf.Timestamp live_data_retrieved_at = 9;

  /*
     Current operational state of the account on the blockchain ledger.
     Reflects whether the account is active and able to transact.
  */
  AccountState state = 10;

  /*
     Current instrument balances held in this account.
     Each balance represents a specific financial instrument and its quantity.
     NOTE: This is live ledger data - only populated when retrieved with populate_ledger_data=true.
  */
  repeated Balance balances = 11;
}

/*
   Metadata describing financial instruments held in account balances.

   Provides descriptive, non-quantifiable information about instruments to enable
   proper identification and categorization of holdings within an account.
*/
message InstrumentMetaData {
    /*
       The official or commonly recognized name of the instrument.
       Examples: "Apple Inc.", "Bitcoin", "US Dollar".
    */
    string name = 1;

    /*
       Classification category of the financial instrument.
       Determines the instrument's fundamental nature and trading characteristics.
    */
    meshtrade.studio.instrument.v1.InstrumentType type = 2;

    /*
       Standard unit of measurement for quantifying the instrument.
       Examples: SHARE for equities, OUNCE for precious metals, NOTE for bonds.
    */
    meshtrade.studio.instrument.v1.Unit unit = 3;
}

/*
   Balance entry representing holdings of a specific financial instrument.

   Combines quantity information with instrument metadata to provide a complete
   view of each position held within an account.
*/
message Balance {
    /*
       Quantity of the instrument held, expressed as a high-precision decimal amount.
       Includes both available and locked funds (e.g., in open orders or other obligations).
       The amount's token field indicates the instrument's blockchain representation.
    */
    meshtrade.type.v1.Amount amount = 1;

    /*
       Descriptive metadata identifying and classifying the instrument.
       Provides context for interpreting the balance quantity.
    */
    InstrumentMetaData instrument_metadata = 2;
}

/*
   Operational state of an account on the blockchain ledger.
*/
enum AccountState {
  /*
     Unknown or unspecified state.
     Default value to prevent accidental assignment - should not be used in practice.
  */
  ACCOUNT_STATE_UNSPECIFIED = 0;
  
  /*
     Account is closed and cannot perform transactions.
     Closed accounts may still be queried for historical purposes.
  */
  ACCOUNT_STATE_CLOSED = 1;

  /*
     Account is open and active for trading operations.
     Open accounts can receive deposits and execute transactions.
  */
  ACCOUNT_STATE_OPEN = 2;
}