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Silent Payments

Receive private payments from anyone on a single static address without requiring any interaction or extra on-chain overhead.

Update: This now has a BIP and WIP implementation

Overview

The recipient generates a so-called silent payment address and makes it publicly known. The sender then takes a public key from one of their chosen inputs for the payment, and uses it to derive a shared secret that is then used to tweak the silent payment address. The recipient detects the payment by scanning every transaction in the blockchain.

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Braidpool Payout

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Each bead commits to:
    | Bitcoin Block header                                       | Slots Merkle Root |
    | Coinbase | timestamp | nonce | TX Merkle Root | prev block |

Where the block header is a standard bitcoin block header as expanded in the second line
and each bead commits to <Slots Merkle Root> which should be added to the <metadata> 
field as described in:
    https://github.com/mcelrath/braidcoin/blob/master/braidpool_spec.md

The Slots data structure is a key-value table containing:

pool2win

#lang racket

;; define place holder functions for demo
(define (pk key) (eq? key #t))
(define (older num) (> num 1000))
(define (hash160 val) (val))

(let ([key_revocation 'abc]
      [key_local 'def]
      [key_remote 'xyz]