Inside Painted Snuff Bottles-One of the most famous and collectible types of snuff bottles is the inside or reverse painted. These little masterpieces are painted by reaching down through the neck of the bottle with a tiny curved brush or piece of bamboo.
A signature block (often abbreviated as signature, sig block, sig file, .sig, dot sig, siggy, or just sig) is a block of text automatically appended at the bottom of an email message, Usenet article, or forum post. 1  1 Email and Usenet.  1.1 Signatures in Usenet postings.
Definition of Digital Signature. 1  A key generation algorithm that selects a private key uniformly at random from a set of possible private keys. The algorithm outputs the private key and a corresponding public key. 2  A signing algorithm that, given a message and a private key, produces a signature.