Find wallets related to an address

1Call the related endpoint

Pass the seed address and chain. The related endpoint is C3-metered. Each candidate comes with a relation type and confidence.

curl https://api.1st-node.com/v1/intel/eth/0x9a..f2/related \
  -H "Authorization: Bearer sk_live_..."

2Read the candidate set

The response lists candidate addresses with a relation type (co-spend, funding, behavioral) and a confidence value. Higher confidence means a stronger same-entity attribution.

> { "related": [
>   { "address": "0x28..a1", "relation": "co-spend",
>     "confidence": 0.88 },
>   { "address": "0x5c..09", "relation": "funding",
>     "confidence": 0.71 } ] }

3Threshold and persist the set

Set a confidence floor for inclusion, then store the retained addresses with their relation type. The stored set makes the expansion reproducible and auditable.

4Screen the expanded set for risk

Run each retained address through risk-score on the same key so the expanded cluster carries an AML view, not just an attribution.

curl https://api.1st-node.com/v1/aml/eth/0x28..a1/risk \
  -H "Authorization: Bearer sk_live_..."