The Technology Behind Tokenization: Blockchains, Smart Contracts and Token Standards

When people talk about tokenizing a building or a bond, they usually focus on the result: smaller investments, faster transfers, clearer records. Underneath, a tokenized asset depends on several layers of technology working together. If any one of them is weak, the whole thing can fail.

This post explains each layer in plain words, the choices projects make, and the questions to ask before trusting a tokenized product. If you are new to the topic, start with our plain guide to RWA tokenization.

The layers at a glance

Layer	What it does	Plain comparison
Blockchain	Keeps the shared record of who holds what	The registry book
Smart contract	Sets and enforces the token's rules	The rules of the registry, written as code
Token standard	A common format for tokens	A standard form everyone can read
Identity layer	Checks who is allowed to hold tokens	The ID check at the counter
Oracle	Brings real-world data on chain	The messenger from the outside world
Custody	Holds the real asset and the keys	The safe and the trustee
Wallet	Lets a holder control their tokens	Your account and signature
Payment rail	Moves the money	The bank transfer or M-Pesa of the system

1. The blockchain

A blockchain is a shared database kept by many computers at once. Each new batch of records (a block) is linked to the one before using cryptography, so changing an old record would mean changing every record after it on most of the computers in the network. That makes the history very hard to tamper with.

Public vs private blockchains

• Public blockchains such as Ethereum, and networks like Polygon, Solana, Avalanche, Stellar and Hedera, can be used by anyone. Records are visible, and many independent parties keep copies.
• Private (permissioned) blockchains are run by a group of known organisations, such as a set of banks. Only approved parties can join.

Many tokenized assets for regular investors now live on public blockchains, with permission rules built into the tokens themselves. Banks often use private ledgers for large deals between institutions. Increasingly, the two are being connected.

What projects look at when choosing a chain

• Cost per transaction.
• Speed to finalise a transfer.
• Security and track record.
• Regulation and compliance tools.
• Who else uses it, since being where the investors and other assets are matters.

2. Smart contracts

A smart contract is a program stored on the blockchain that runs exactly as written. For a tokenized asset, it typically controls:

• how many tokens exist and who can create or destroy them;
• who can hold them (only verified wallets);
• transfer rules (for example, no transfers to blocked countries, or limits on how many holders);
• payouts of rent or interest;
• emergency actions, such as freezing tokens when a court orders it or reissuing tokens if a holder loses access.

Smart contracts remove a lot of manual work, but they are code, and code can have bugs. Serious projects have their contracts audited by independent security firms before launch.

3. Token standards

A token standard is an agreed format that makes tokens work with wallets, exchanges and other software.

• Fungible token standards (such as ERC-20 on Ethereum) are for tokens where every unit is the same, like shares in a fund.
• Non-fungible token standards (such as ERC-721) are for unique items, like a specific plot or a specific title.
• Security token standards (such as ERC-3643 and ERC-1400) add the features regulated assets need: identity checks, transfer restrictions, and the ability for an authorised party to freeze or recover tokens.

Other blockchains have their own versions. Hedera's Token Service, for example, builds compliance features such as identity checks and freezing directly into the network rather than into custom code.

4. Identity and compliance

Real-world assets come with real-world rules. Securities laws, anti-money-laundering rules and, for land, rules about who may own what, all need to be enforced.

Tokenization platforms handle this with an identity layer:

1. An investor goes through identity checks (often called KYC, or know your customer) with the platform.
2. Their wallet is marked as verified, sometimes with details like country and investor type.
3. The smart contract only allows transfers between verified wallets that meet the rules.

This is how a token can move quickly while still obeying the law.

5. Oracles: bringing the real world on chain

A blockchain only knows what is recorded on it. It cannot see whether rent was paid, what a property is worth or whether a bond has matured. Oracles are services that bring that information on chain in a trusted way: prices, valuations, interest rates, proof that reserves exist, and so on.

Weak oracles are a real risk. If false data goes in, the smart contract will act on it.

6. Custody and the legal link

The token is only valuable because of the real asset behind it. Someone has to hold that asset and make sure token holders' rights are respected.

• For property, a company or trust usually holds the title, with a trustee or custodian responsible for it.
• For bonds and funds, a regulated custodian holds the securities.
• For gold, a vault operator holds the metal, with regular audits.

The legal documents that tie the token to the asset are just as important as the code. Our post on tokenizing land and real estate explains the main legal structures for property.

7. Wallets and keys

A wallet is software (or a device) that holds the private keys that control tokens. Whoever controls the keys controls the tokens.

• Self-custody wallets give you full control, and full responsibility if you lose your keys.
• Custodial wallets are run by the platform or a regulated custodian on your behalf, more like a bank account.

For regulated assets, the security token standards above allow lost tokens to be recovered and reissued under strict rules, which is one big difference from cryptocurrencies.

8. Payment rails

Buying tokens and receiving income needs money that moves as smoothly as the tokens:

• Stablecoins pegged to the US dollar or other currencies.
• Tokenized bank deposits issued by banks.
• Central bank digital currencies, being explored by many central banks.
• Ordinary bank transfers and mobile money, linked to the platform.

The goal is atomic settlement: the asset and the payment change hands at the same moment, so neither side can be cheated.

Putting it together: a tokenized building

1. A company is set up to hold the title to a building. A trustee is appointed.
2. The building is valued and audited. The regulator approves the offer.
3. A security token contract is written and audited, with transfer rules matching the approval.
4. Investors pass identity checks and their wallets are verified.
5. Investors pay with bank transfer, mobile money or stablecoins and receive tokens.
6. Each month, rent is collected, an oracle confirms the amount, and the contract pays holders.
7. Investors who want to sell transfer tokens to other verified investors on an approved platform.

Questions to ask about any tokenized product

1. Which blockchain is it on, and why?
2. Has the smart contract been independently audited? Can I see the report?
3. What token standard is used, and does it support recovery and compliance?
4. Who holds the real asset, and under what legal agreement?
5. Who is the regulator, and is the offer approved?
6. Where does outside data come from?
7. What happens if the platform shuts down?
8. Who controls the keys to my tokens?

Where this is heading

• More connections between chains and between public chains and banks' ledgers.
• Common standards for regulated tokens, making them easier to list and trade.
• Better identity tools that let people prove who they are without sharing all their data.
• Government registries testing digital records, as Dubai has done with property.

Read more in our posts on RWA trends in 2026 and why tokenization is the future of property ownership.

Frequently asked questions

What blockchain is used for tokenization?

Many. Ethereum is the most common for tokenized funds, with others such as Polygon, Solana, Avalanche, Stellar and Hedera also widely used. Banks also use private ledgers.

What is a smart contract?

A program on a blockchain that runs exactly as written. For tokens, it sets the rules for holding, transferring and paying out.

What is a security token standard?

A token format with built-in compliance features such as identity checks, transfer limits and the ability to recover or freeze tokens, used for regulated assets.

Can tokens be recovered if I lose my wallet?

For regulated security tokens, often yes, under strict rules. For ordinary cryptocurrencies, usually no.

What is an oracle?

A service that brings outside information, such as prices or valuations, onto the blockchain for smart contracts to use.

Keep reading

Read our plain guide to RWA tokenization and Kenya's tokenization rules. If you are buying land today, browse plots for sale in Nyeri or call Famyard Enterprises on +254 119 222666.