Alpha release. Use at your own risk.
Bugs and usability issues may result in loss of funds.
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Let's write some coupons!

This is an advanced feature for power users. There is no way to undo writing a coupon.

Coupons incentivize money being spent 1) at a specific destination, 2) above some minimum amount, and 3) with restrictions like: limit one per customer.

Future vault coupons are plain bitcoin cash unspent transaction outputs (UTXOs) that have been sent to, and are then locked by a simple contract to incentivize spending money at a specific destination (a FBCH token vault). For example, an output of 100k sats can be sent to a coupon contract to be used for locking at least 1 BCH (min. value) into 1 FBCH at a vault contract (destination).

Coupons values are denoted in BCH sats, where the value of the coupon is the value of the unspent output. A whole BCH could be split into 1000 coupons each offering 100k sats for placement, or 1 BCH coin could be sent to the coupon contract in one single output to let anyone lock a "free" FBCH.

At this time, all coupons incentivize the same placement amount of 1 BCH (or 100M sats) into an FBCH vault. These "C0" series coupons are to lock 1 x 10^0 BCH, but there may be smaller and larger amounts later (i.e C2 for 100 BCH placements and C-2 for 0.01 BCH vault placements).

Coupons are not refundable. Money sent to a coupon holding contract can only be redeemed in a transaction that sends the required amount of value to a second predefined contract (i.e. a future vault).

Below is a simple tool for use with the Electron Cash pay-to-many feature:

Placement: 1 BCH
Lock up to 0 FBCH
Total: 0 BCH