RPC Browser

listaddressgroupings

Lists groups of addresses which have had their common ownership
made public by common use as inputs or as the resulting change
in past transactions

Result:
[               (json array)
  [             (json array)
    [           (json array)
      "str",    (string) The bitcoin address
      n,        (numeric) The amount in BTC
      "str"     (string, optional) The label
    ],
    ...
  ],
  ...
]

Examples:
> bitcoin-cli listaddressgroupings 
> curl --user myusername --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "listaddressgroupings", "params": []}' -H 'content-type: text/plain;' http://127.0.0.1:8332/