铜标志的参与者承诺完全满足铜标志标准的要求。 通过严格的现场评估过程，每个现场都被独立验证是否符合标准的要求。

合规性是由在评估管理系统方面有良好记录的高级评估员来验证的。 铜标志审查他们的资格，并对每个评估员进行单独批准。

After successful completion of the assessment, the performance determination and a summary of the assessment activities, methodology and results are published.  Sites must address all gaps between their practices and the standard criteria to meet their commitment.

The Copper Mark recognises that core expectations evolve over time and become more demanding.  For this reason, each site is re-assessed every three years against updated criteria.  Detailed expectations and timelines are defined in the Copper Mark Assurance Process.