CBI continues to implement its ACE strategy during November

2025

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In November 2025, measured in Bitcoins, the yield from mining servers

increased compared to October 2025 due to improved network efficiency

In the same month, measured in USD, the annualized mining yield remained

above 15% with Bitcoin at $85,000; it was over 30% in October 2025 with

Bitcoin at $115,000

CBI will be able to benefit from a potential rebound in Bitcoin as it has

retained Bitcoins in its portfolio

Paris, France, December 3, 2025, at 8:00 a.m. CET (CBI, Euronext Growth Paris:

FR0014007LWO - ALCBI; OTCQB: CBIPF) – CRYPTO BLOCKCHAIN INDUSTRIES (“CBI”)

announces that the yield of its mining servers, measured in Bitcoin for the month of

November 2025, has increased compared to October 2025. Measured in USD, the annualized

mining yield remains above 15% with Bitcoin at $85,000. It was over 30% in October 2025

with Bitcoin at $115,000. CBI has retained the Bitcoins in its portfolio in order to position

itself for a potential market rebound.

Preliminary note: As of November 30, 2025, the closing price of Bitcoin was $91,267, which was

used for the end-of-month valuation (see next section). In the analyses below, a Bitcoin value of

$85,000 was used given the very recent market volatility.

In November 2025, CBI observed a gradual improvement in the return generated by its mining

servers as measured in Bitcoin. This development is in line with trends observed within the

industry, where mature infrastructures are able to maintain consistent performance despite the

volatility inherent in the crypto-asset market. It also confirms the operational robustness of CBI's

model and its ability to capitalize on a demanding and extremely volatile competitive environment.

Over the same period, measured in USD, the annualized mining yield remains above 15% with a

Bitcoin price of $85,000. It was over 30% in October 2025 with a Bitcoin price of $115,000. The

15% annual rate is considered attractive in the sector. This level reflects the control of operating

costs, the energy efficiency of the infrastructure deployed, and the continuous optimization of

mining capacity.

CBI did not sell any Bitcoin during November 2025 except to pay the electricity bill for that month.

This strategy, in line with industry practices, aims to maintain exposure to the Bitcoin market in

1anticipation of a potential market rebound. This retention policy reflects a long-term approach to

the valuation of its digital assets.

Composition of the portfolio of crypto-assets and similar assets, including mining servers

CBI's crypto-asset portfolio continues to grow and is now estimated to be worth more than US$8.8

million, excluding the valuation of the company's own tokens. This growth reflects an accumulation

policy aimed at consolidating CBI's presence in the crypto-asset market

The portfolio also includes fiat currency holdings, currently earmarked for the purchase of Bitcoins

and valued at their face value.

In line with the ACE (Acquire, Create, Earn) strategy, this initiative aims to provide CBI with

additional leverage to accelerate its global growth. It helps to establish the company's long-term

credibility within the blockchain ecosystem and strengthen its strategic presence in the North

American market.

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