CARTAO63, issued by MB Securitização e Distribuição S.A., is a tokenized-fund instrument that represents a fractional interest in Cartao 63 and tracks its net asset value [S1][S2].

The token references Cartao 63 (CARTAO63) as a certificate of receivables backed by credit rights under Brazil's Renda Fixa Digital line [S2][S1]. Returns follow either a pre-fixed or post-fixed model tied to indicators such as IPCA inflation, are paid in Brazilian reais, and accrue as total return at maturity rather than perpetual price tracking [S3][S4]. Trading carries no platform, custody, or maintenance fees; any product-specific fees appear in each token's lâmina [S5][S3].

The distribution and securitization issuer is MB Securitização e Distribuição S.A., operating through a crowdfunding platform under Resolução CVM nº 88 with registration exemption in Brazil, regulated by the Comissão de Valores Mobiliários [S1][S6]. The platform operator is Mercado Bitcoin Serviços Digitais Ltda. [S7]. Holders own certificates of receivables representing securitization titles backed by credit rights [S2][S1]. Investors open a free account, complete KYC identity verification, and invest from R$ 100 [S5]. Redemption occurs through liquidação of the underlying at maturity, paying reais proportional to tokens held, with secondary-market resale available between users [S4][S8]. Client deposits sit in segregated institutional custody audited annually by KPMG [S5].

Tokens are issued on the Rootstock, Polygon and Ethereum networks using the ERC-20 standard, with each offering's network confirmed in its lâmina [S9][S3][S2]. They are distributed through MB Securitizadora's crowdfunding platform with offering documents including the Anexo E and Termo de Securitização [S1][S2]. Settlement pays reais into the holder's account at maturity or as a partial advance, reducing tokens proportionally, and balances are verifiable on a public onchain registry [S4][S8].

<Sources
  retrievedAt="2026-06-24"
  items={[
    { id: "S1", url: "https://www.mercadobitcoin.com.br/oferta-publica" },
    { id: "S2", url: "https://www.mercadobitcoin.com.br/economia-digital/categoria/renda-fixa-digital/" },
    { id: "S3", url: "https://www.mercadobitcoin.com.br/economia-digital/educacao/renda-fixa-digital/" },
    { id: "S4", url: "https://www.mercadobitcoin.com.br/economia-digital/invista-com-estrategia/quando-minha-renda-fixa-digital-vai-dar-lucro/" },
    { id: "S5", url: "https://www.mercadobitcoin.com.br/oferta-publica/renda-fixa-digital" },
    { id: "S6", url: "https://www.mercadobitcoin.com.br/economia-digital/criptos/o-que-e-cvm/" },
    { id: "S7", url: "https://www.mercadobitcoin.com.br/politicas-termo-de-uso" },
    { id: "S8", url: "https://www.mercadobitcoin.com.br/economia-digital/token/o-que-e-token-de-consorcio-vale-a-pena-investir/" },
    { id: "S9", url: "https://www.mercadobitcoin.com.br/economia-digital/guia/renda-fixa-digital/" },
  ]}
/>


# Asset holders methodology

## 1. Overview

Asset holders is measured as the number of unique addresses that hold a non-zero balance of a project’s assets. This metric is used by investors to track the expansion or contraction of the asset holder base over time. Data is aggregated daily for each tracked asset across all supported blockchain networks.

## 2. Data sources

- **EVM chain data**: Ledger state and ERC-20 `Transfer` events, covering EVM-compatible chains (Ethereum, Arbitrum, Base, Polygon, Optimism, and others).
- **Solana instructions**: SPL token account data and transfer instructions.
- **Other chain types**: Account and balance data from Aptos, Near, and Polkadot Asset Hub.
- **Asset metadata**: Token contract addresses and decimal precision retrieved from asset metadata.

## 3. Step-by-step calculation

### Component A: Address balance identification

- **Purpose**: Identify all unique addresses associated with a specific token and determine their current holdings.
- **Logic**: For EVM-compatible chains, balances are derived by parsing ERC-20 `Transfer` events or by querying the ledger state for all addresses that have interacted with the token contract. On Solana, account balances are retrieved from the SPL token program. Similar account-based balance records are extracted for Aptos, Near, and Polkadot Asset Hub to identify the population of potential holders.
- **Key fields**: `token_address` (the contract address of the asset), `address` (the unique identifier of the holder), `timestamp` (the time of the state record).

### Component B: Normalization and non-zero filtering

- **Purpose**: Ensure token amounts are accurate and exclude addresses that no longer hold the asset.
- **Logic**: Decimal precision is retrieved from token metadata for each asset. All raw amounts are normalized by decimal precision. A filter is applied to exclude any address where the resulting balance is zero. Only addresses with a positive balance are retained for the final count.
- **Key fields**: `amount` (the normalized quantity of tokens held), `decimals` (the precision factor for the asset).

### Component C: Daily aggregation and gap filling

- **Purpose**: Calculate the final daily count and ensure continuity in the time series.
- **Logic**: Unique addresses are counted for each asset per chain on a daily grain. The data is combined across all chains to provide a total holder count per asset. For days where no new balance changes are recorded, the metric is filled with zero values or the previous known state is maintained to ensure a continuous daily record.
- **Key fields**: `asset_holders` (the count of unique addresses), `timestamp` (the day of the observation).

*This methodology was automatically generated by Token Terminal's methodology analyzer.*

Unique addresses holding a non-zero balance of the asset.

Asset holders

Tokenized funds

website

docs

Real-world asset (RWA) issuers

Mercado Bitcoin

Mercado Bitcoin Cartao 63 (CARTAO63) is a tokenized fund share issued by Mercado Bitcoin through MB SECURITIZAÇÃO E DISTRIBUIÇÃO S.A.

Each token is a direct claim on the issuer.

The fund is closed-ended and invests in private credit in Latin America.

Investors can subscribe and redeem in BRL.

MB SECURITIZAÇÃO E DISTRIBUIÇÃO S.A. is supervised by Comissão de Valores Mobiliários.

CARTAO63 has been issued on Rootstock as an ERC-20 token since January 2026.

Mercado Bitcoin Cartao 63CARTAO63