Company: ABTC
Filing Date: 2025-08-15
Form Type: 424B3
Source: 0001213900-25-077441
Chunk: 3

Company: American Bitcoin Corp.
Filing Date: 2025-08-15
Form: 424B3
Chunk 3
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ending and restating the fifth full paragraph under the heading “Opinion of Marshall & Stevens” on page 80 as follows (with new text in underline):

With the exception of the
M&S Opinion, Marshall & Stevens has not had any material relationships during the past two years, nor is any future material
relationship currently contemplated, between Marshall & Stevens, including its affiliates, and Gryphon and/or its affiliates. In addition, Marshall & Stevens has not had any material relationships during the past two years, nor is
any future material relationship currently contemplated, between Marshall & Stevens, including its affiliates, and ABTC and/or its
affiliates.

Amending and restating the third bullet on page 81 as follows (with new text in underline):

| ● | no specific projections were contained                                                        
 in these presentations, no projections of ABTC or Gryphon were otherwise provided to Marshall 
 & Stevens in connection with the M&S Opinion and, as such, Marshall &                         
 Stevens did not make use of projections in providing the M&S Opinion (as further described    
 below);                                                                                       |

<div align='center'>2</div>

Amending and restating the paragraph under the heading “—Financial Projections” on page 83 as follows (with new text in underline):

Marshall & Stevens
has not been provided with any financial projections or forecasts for ABTC . Accordingly,
with the Gryphon Board’s approval, Marshall & Stevens has not used any discounted cash flow valuation methodology.

Inserting the following paragraph immediately following the second bullet under the heading “—Publicly Traded Market Capitalization Analyses for Gryphon” on page 83:

Marshall & Stevens used
a common method to calculate the 30-day VWAPs above. This involved calculating the average traded price of Gryphon Common Stock over the
last 30 trading days prior to the applicable valuation date noted above, weighted by traded volume. For the price factor, Marshall &
Stevens utilized the closing price of Gryphon Common Stock over the last 30 trading days prior to the applicable valuation date.

<div align='center'>3</div>

Amending and restating the table under the heading “—Guideline Public Company Analysis for ABTC” on page 88 as follows (with new text in underline):

| (in                                
 $ Millions, except per share data) |     |          |         |     |        |         |     |         |       |     |         |      |     |                |       |   |     |