Abstract: The invention relates to a syringe with a visual indicator and retaining elements, which is used in the application of epidural anaesthesia. The syringe has the particularity of comprising a visual indicator located at the front end of a plunger that drives the fluid contained in the barrel, which visual indicator is an element in the form of a bellows comprising two discs with a membrane between the two discs, wherein the membrane can be deformed according to the pressure in the syringe. The syringe also comprises longitudinal lateral flanges on the body of the plunger, which have a surface with a plurality of teeth, wherein the plunger is rotatable relative to its axial axis, and wherein the teeth allow the plunger to be secured.

Abstract: Regulated crypto-assets, or blockchain tokens, that are regulated as securities (security tokens) can be purchased using a compliance platform through a compliance wallet that allows token purchasers and token sellers to purchase and sell security tokens in a regulatory compliant manner. A rules engine of the compliance platform determines what compliance rules need to be satisfied for a given transaction and guides the token purchasers through a compliance process. Token sellers, upon being presented with a request to purchase tokens on the blockchain, can verify approved transactions on the compliance platform to ensure that the transaction can be compliantly processed.

Abstract: Regulated crypto-assets, or blockchain tokens, that are regulated as securities (security tokens) can be purchased using a compliance platform through a compliance wallet that allows token purchasers and token sellers to purchase and sell security tokens in a regulatory compliant manner. A rules engine of the compliance platform determines what compliance rules need to be satisfied for a given transaction and guides the token purchasers through a compliance process. Token sellers, upon being presented with a request to purchase tokens on the blockchain, can verify approved transactions on the compliance platform to ensure that the transaction can be compliantly processed.