Albert had ensured Riga's commercial future by obtaining papal bulls which decreed that all German merchants had to carry on their Baltic trade through Riga. In 1211, Riga minted its first coinage, and Albert laid the cornerstone for the Riga Dom. Riga was not yet secure as an alliance of tribes failed to take Riga. In 1212, Albert led a campaign to compel Polotsk to grant German merchants free river passage. Polotsk conceded Kukenois (Koknese) and Jersika to Albert, also ending the Livs' tribute to Polotsk.