Note

note is stream cipher encrypted with symmetric key key, derived from shared key¹. key = hash(sharedSecret, ephemeralKey) $s ha re d S ecre t = e p h e m er a lS ecre t * p u b l i cKey$ where publicKey is recipient public key. based off diffie-hellman shared secret.

Payment Note

Note = (sn, value, tokenId, spendHook, data, $b l in d^{v a l u e}$ , $b l in d^{t o k e n}$ , memo)

Note	Description
sn	serial number sampled at random
value	payment value
tokenId	token id
spendHook	coin related contract
data	data used by the coin contract
$b l in d^{v a l u e}$	value commitment blinding term
$b l in d^{t o k e n}$	token commitment blinding term
memo	arbitrary data