I’ll rewrite the smart paper, synchronizing the tasks, table of contents, and headers. I’ll complete missing sections where I have enough context, and add todo tasks for areas that need more information or research. Here’s the revised version:


DS - A purely peer-to-peer, local-first, self-verifiable, portable, encrypted-by-default document stamp format for the next billions of people and years

By Josh Spooner, the last date scientist, and many giants Published in August 2024

Table of Contents

Abstract

We propose and demo Date Seal, a protocol that provides human-verifiable proof that a content block existed at a specific point in time, as easy to use as copy-paste. This local-first, tamper-proof, and self-verifiable document format empowers billions of people with cost-effective, trustworthy, tamper-verifiable record-keeping and dynamic accounting ledgers. By standardizing the digestion, time-stamping, and updating of content blocks with canonical, content-addressable references, Date Seal bridges a major gap between smart contracts and human-readable Ricardian contracts. The protocol addresses privacy concerns by allowing authors to control the inclusion of personal identifiers, while AI can assist non-technical users in verifying the technical implementation. Date Seal’s portability and peer-to-peer nature pave the way for multi-chain, multi-party Ricardian contracts, revolutionizing how we establish trust in digital documents.

Introduction

The internet’s data ecosystem has become heavily reliant on centralized cloud platforms and crypto platforms, both of which have limitations in terms of offline accessibility and decentralized trust. While these systems function adequately for most users, they inherently suffer from the weaknesses associated with centralized trust models.

What the digital world needs is a paradigm shift: a human and machine-readable, portable document standard that relies on cryptographic proof rather than centralized trust. This standard should enable any two willing parties to directly verify “date-sealed” smart documents without the need for a trusted intermediary. Enter Date Seal - an in-line and archived document stamp that provides a cryptographic proof of a content block’s existence at a specific point in time.

In this paper, we introduce Date Seal as a solution to the document verifiability and agentic identity problem. Our approach utilizes a peer-to-peer distributed system to generate computational proof of the chronological order of date seal stamps. This system allows for optional redaction of identifying information, ensuring privacy where needed. The security of this system is maintained as long as honest nodes sync periodically and collectively maintain the longest sequence of cross-verified date-sealed blocks, outpacing any potential group of attacker nodes.

By leveraging the power of cryptographic proofs and decentralized verification, Date Seal aims to revolutionize how we establish trust in digital documents, paving the way for more secure, transparent, and user-controlled data management in the digital age.

Date Sealing

Date-Sealing is the core process of the Date Seal protocol, consisting of several key components that work together to create a verifiable, time-stamped record of content. Let’s explore each of these commands and components in detail:

Digest Command

Content Block Definition

A content block is a discrete unit of information that can be individually referenced, sealed, and verified. It is typically defined as a continuous section of text that serves a specific purpose or conveys a particular idea. It can be as small as a single line or as large as multiple paragraphs, depending on the content’s logical structure. Here are some key characteristics of markdown content blocks:

  1. Structural Boundaries: Content blocks are often delineated by structural elements in markdown, such as headers, blank lines, list items, code blocks, callouts, and blockquotes.
  2. Semantic Unity: A content block should represent a cohesive unit of information.
  3. Markless Format: The ability to extract the core content by removing markdown syntax is crucial for content blocks.
  4. Granularity: The size of a content block can vary based on the document’s needs.
  5. Nestability: Content blocks can be nested within each other.
  6. Metadata Inclusion: In some cases, a content block might include its own metadata.

Digest Content Blocks

The first step in Date-Sealing is to create a unique cryptographic hash of the content block. This is achieved using the SHA-256 hashing algorithm, which produces a fixed-size output regardless of the input size. To make the hash more manageable and user-friendly, we shorten the 64-character SHA-256 hash output to its first 12 characters as a digest - a balance between uniqueness and brevity.

Time-stamp - Digest and Seal

The Date Seal protocol employs a two-step approach to generate a unique, verifiable stamp for each content block:

  1. Markless Content Digest
  2. Seal Digest

These two elements collectively form the Date Seal:

[^ds/{YYYY-MM-DD}/{markless-digest}^] ^ds-{YYYY-MM-DD}-{seal-digest}

Syntax

The general syntax is: [^ds/{YYYY-MM-DD}/{markless-digest}^] ^ds-{YYYY-MM-DD}-{seal-digest}

Seal Command

  • todo smart-paper Expand on the Seal Command, including how it publishes to Obsidian or NOSTR and adds external links to WikiWe.org

Copy-Check Command

The Copy-Check process is a key feature of the Date Seal protocol that combines copying content with seal verification. When a user copies a date-sealed content block:

  1. The Date Seal’s integrity is automatically verified.
  2. The user receives immediate feedback.
  3. The content is copied to the clipboard.

This process ensures users are aware of the content’s integrity while performing routine copy operations.

Implementation and Demos

Demo of Digest Command

The Date Seal protocol can be practically implemented using programmable markdown editors. In this demonstration, we use Obsidian with its Templater plugin.

Demo of Copy-Check Command

Here’s an implementation of the Copy-Check command using an Obsidian Templater script.

Cross Publishing

  • todo smart-paper Expand on cross-publishing capabilities, including integration with NOSTR and other networks

Proof-Of-Dated-Unique-Content

  • todo smart-paper Develop the concept of Proof-Of-Dated-Unique-Content, including its incentive structure

Privacy Considerations

  • todo smart-paper Discuss privacy implications and features of the Date Seal protocol

Calculations and Performance

  • todo smart-paper Provide performance metrics and calculations, including the PODUC KJV example

Conclusion