Passport Stamp Weights
Each Stamp carries a specific weight that contributes to your Unique Humanity Score. The recommended partner threshold for verifying unique humans is a score of 20.
Weights are periodically adjusted to strengthen humanity signals and respond to evolving Sybil tactics. The most recent update was the January 2026 reweight.
Scoring Table
| Stamp Category | Weight |
|---|---|
| ETH Activity | 22.541 |
| NFT | 22.053 |
| Government ID | 16.026 |
| Identity Staking | 12.506 |
| Binance BABT | 10.021 |
| Gitcoin | 6.237 |
| GitHub | 6.026 |
| Biometrics | 6.0 |
| ZK Email | 4.0 |
| Proof of Clean Hands | 3.0 |
| Discord | 2.8 |
| Steam | 2.8 |
| Phone Verification | 1.521 |
| 1.531 | |
| 0.525 | |
| Guild.xyz | 0.708 |
| ENS | 0.208 |
| Snapshot | 0.239 |
| Safe | 0.222 |
How Weights Work
Your Unique Humanity Score is the sum of the weights from all your verified Stamps. A higher score provides stronger evidence that you are a unique human.
The recommended threshold of 20 means that partners integrating Passport should generally require users to have a combined Stamp weight of at least 20 to be considered verified.
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