ENP Technologies

Secure Blockchain

How secure are data and metadata on the Blockchain?

Blockchain is often considered secure due to its cryptographic principles and decentralized nature.
However, it’s important to distinguish between the security of data and metadata on the blockchain.

Security of Data on the Blockchain:


Once data is added to a block and the block is
added to the blockchain, it becomes nearly impossible to alter. This
immutability enhances the security of the stored data.


Blockchain uses cryptographic techniques to secure
data. Each block contains a cryptographic hash of the previous block, creating
a chain of blocks. This hash, along with other cryptographic mechanisms,
ensures the integrity and security of the data.


Blockchain operates on a decentralized network of
nodes. This decentralization makes it difficult for a single entity to control
or manipulate the data, enhancing the security of the entire system.

Consensus Mechanisms:

Blockchain networks use consensus mechanisms like
Proof of Work (PoW) or Proof of Stake (PoS) to validate transactions and agree
on the state of the ledger. This adds an additional layer of security against
malicious actors.


Some blockchains use encryption to protect the
confidentiality of data. Private and permissioned blockchains may employ
encryption techniques to restrict access to authorized participants.

Security of Metadata on the Blockchain:

Digitalization & Security
Digitalization Security

Immutability and Transparency:

Similar to data, metadata on the blockchain is
immutable and transparent. Changes to metadata are traceable, providing a clear
audit trail.

Smart Contracts:

Smart contracts, self-executing programs on the
blockchain, can include metadata and enforce predefined rules. The code
governing smart contracts is typically visible and transparent, contributing to
the security of metadata execution.

Decentralized Identity:

Blockchain can be used for decentralized identity
management, improving the security and privacy of metadata associated with user

Permissioned Access:

Some blockchains allow for permissioned access,
where only authorized participants have the right to view or modify certain
metadata. This controlled access enhances security.

Public vs. Private Blockchains:

The level of security for data and metadata can
vary between public and private blockchains. Public blockchains, being open and
permissionless, rely on cryptographic methods, while private blockchains may
have additional layers of security due to restricted access.

Considerations and Challenges:

51% Attacks:

In public blockchains using Proof of Work, a 51%
attack (where a single entity controls the majority of the network’s mining
power) could potentially compromise the security of data and metadata.

Smart Contract Vulnerabilities:

Smart contracts, if not coded securely, can be
vulnerable to exploits. This could impact the security of associated metadata
and the execution of predefined rules.

External Integration:

When integrating external data or systems with a
blockchain, the security of the overall system depends on the security
practices of those external elements.

Regulatory Compliance:

Depending on the use case, regulatory compliance
may impact the security of data and metadata on the blockchain. Ensuring
compliance with relevant regulations is crucial.

In summary, the security of data and metadata on
the blockchain is generally considered strong due to cryptographic principles,
decentralization, and transparency. However, as with any technology, it is
essential to be aware of potential vulnerabilities, adhere to best practices,
and stay updated on emerging security standards. Additionally, the security
landscape may vary based on the specific blockchain implementation and its use

If you would like to know how UNIIEQ Blockchain Metadata platform
can deliver secure metadata for your ERP, please write to info@enptechnologies.com