[{"type":"report","id":"BLC-STUDY-1722","title":"Allow zero value OP_RETURN in Payment Protocol","author":[{"literal":"Toby Padilla"}],"issued":{"date-parts":[[2016]]},"publisher":"Toby Padilla","URL":"https://github.com/bitcoin/bips/blob/master/bip-0074.mediawiki","note":"Rights status: Licensed for redistribution. Not a licence to republish the paper."}]