In recent years, many tokenization operations have been announced. At first glance, this seems positive for the industry. But when we look closely at the technical side, we see that many of these projects run on a private blockchain.
The most recent example is the EIB Digital Bond Issuance, where the European Investment Bank (EIB) priced its first £50 million digital bond using a “combination of private and public blockchain.” This made headlines across the media and was presented as a sign of industry growth. But the question remains: does using a private blockchain really represent innovation, or is it a marketing strategy?
Why Private Blockchain Is an Oxymoron
The key difference is clear: public blockchains allow anyone to join, validate, and verify transactions, while private blockchains are permissioned. Only authorized parties can validate activity, and the owner can override, edit, or delete entries. That undermines the core principle of blockchain.
A public blockchain is different. Anyone can participate, and entries are immutable, making manipulation practically impossible. Reintroducing centralized control makes the system inefficient and contradicts the original purpose. In reality, a private blockchain behaves more like a shared database than a true blockchain.
Private Blockchain or Shared Database?
Comparing the two makes this obvious. If a private blockchain removes transparency and immutability, then a traditional database is often better, cheaper, and faster. Shared databases already exist and can handle multi-party validation using well-established cryptographic methods. They are more efficient than private blockchains.
The purpose of blockchain is to provide a decentralized, immutable, verifiable ledger. It enhances trust, security, and transparency. If these qualities are not required, then blockchain may not be the right tool. In such cases, calling it a blockchain is misleading.
Private Blockchain as Marketing Strategy
Often, companies choose private blockchain not for technical benefits but to market themselves as innovative. The term “blockchain” carries hype, and the public may not distinguish between private and public systems. As a result, private blockchain is presented as innovation, while true progress gets overshadowed.
BlockInvest’s View
As the saying goes: “Everything must change for everything to remain the same.” Many private blockchain projects fit this description. At BlockInvest, we have built our technology on public blockchains, because their greatest strength is security. Transactions recorded on-chain are immutable. They cannot be altered or deleted, only appended.
This design enables investors to verify information on-chain in real time, in a secure and transparent environment. For us, education is critical. Only with clear understanding can investors and institutions separate marketing claims from real innovation.
