Signed & Sealed

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Signed & Sealed — Update 2.5.0

A major document-workflow update: the new KantsOS 98 computer, a document reader, passes with expiry dates, registry search, an inbox for sending documents, and a notice board.

Important for multiplayer: the network protocol has been bumped. Clients and servers must both be on 2.5.0.

Document Reader

A new wall-mounted block that reads passports, ID cards, tickets, documents, and passes. A valid item gives a redstone pulse, like a button. It also powers the block the reader hangs on.

The owner sets it up with Sneak + right-click (empty hand) to choose what it accepts, an accept only filter (organization, type, name), a zone, holder only, the mode (check only, punch once, keep the document), pulse length (1–30 s), and an access list with a lock.

A green light means access granted. A red light means refused, with the reason shown on screen. The reader keeps a log of the last 12 attempts and counts passes.

Recipe: iron, glass pane, redstone, and paper.

Passes and Expiry Dates

New document type: Pass. The editor has a new Details tab.

Valid until is a real-world date in dd.mm.yyyy format. After it, the document counts as expired everywhere: on verification, in the registry, and at readers.

Issued to means only this player can use it at a reader. Zones means a reader set to one of these zones accepts the pass. You can also set it to public or private in the registry.

Registry Search on the Computer

Search by registration number. You see the status: valid, superseded (by which document, and when), revoked, or expired.

Documents are private by default. Strangers see only the status, type, and date. The author, signers, holder, organization members, and admins see everything and can open the document.

Computer Inbox — Send Documents Between Computers

Send the item in your main hand to players or to a whole organization (@Org).

You choose Original (it leaves your hands and goes to one recipient) or Certified copies (1 paper per recipient; you keep the original).

You can attach a message, or ask the recipient to sign. The original stays in the office and comes back to you signed. The recipient can take the item, return it to the sender, or delete the entry. You get a reminder on login if you have new mail.

A Brand-New Computer: KantsOS 98

A desktop with icons, a Start menu, a taskbar with a clock, and windows.

Apps include Digital archive, Document registry, Inbox, Send document, Document viewer (shows the verification result), and About.

Notice Board (3x2 Blocks)

Hang it on a wall and pin up to 6 documents, newspapers, leaflets, or envelopes. Right-click a spot with the item in hand. They are visible in the world. Right-click with an empty hand opens the board to read, take down, or change settings.

The owner can set a caption and lock the board to an access list (names or @Org).

Feed allows entering a newspaper title and the board always shows its latest issue.

Recipe: planks, paper, planks.

Other

Text fields on the computer are now drawn cleanly, without a shadow. Minor layout fixes. Network protocol bumped: clients and servers must both be on 2.5.0.

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Signed & Sealed

Paperwork for roleplay servers: city hall orders, stamped certificates, ID cards, passports that get checked at the border, newspapers, sealed letters, ticket gates and archives. Books and signs can't really do that, so this mod does.

You write a document, sign it with the mouse, stamp it, and the server remembers it. If someone edits the NBT or copies it from another world, the check will catch it.

Everything here is in-game only. Every page has an "IN-GAME DOCUMENT" mark on it that you can't remove, and the country passport templates are just stylised versions, not copies of real ones.

Runs on Forge 1.20.1 and NeoForge 1.21.1. You need it on both the server and the client.

What's in it
Documents. Orders, certificates, contracts, decrees. You get a live preview while you write. Once issued, a document is locked and recorded in the server's registry with an HMAC signature, so edited NBT, copies from other worlds and forgeries all fail the check.
Hand-drawn signatures. Choose a pen, a quill, a marker or a pencil, pick the ink colour and set the width.
Stamps. Design a seal, a border stamp or a visa. Use your own image from a file, drag it in, or paste a link. The admins approve each design. Then you pick the stamp up with the mouse and press it anywhere on the page.
Passports and tickets. Design the template yourself: the cover, the spread, the fields, the photo and the visa pages. 17 country-style presets are included. They are stylised, with no real coats of arms.
Security features. Every page has a security code, microtext you can read with the magnifier, a hologram that shimmers when you move the mouse, and UV marks that appear only on genuine documents.
Newspapers and posters. A full layout editor with 8 pages, pictures, 11 bundled fonts and templates for a front page, a leaflet and a "WANTED" poster. Publish an issue, print copies on the printer, and hang posters straight on walls.
Letters and mail. Seal a letter with wax, send it from a mailbox to any player, even offline. A check shows if it was opened or resealed.
Ticket gates. A turnstile that only lets you through with a valid ticket. It can punch or keep the ticket and gives a redstone signal.
Archives. Archive shelves and filing cabinets with search and viewing without taking documents out. Documents also fit the chiseled bookshelf.
Digital archive. Scan documents into a shared archive and look them up on a computer: who issued it, to whom, when, and was it genuine. Print a marked copy when you need one.
Show and export. /seal show <player> lets another player see your document. You can also export to PNG or PDF.
Admin panel. Press K to approve stamps and templates, hand out blank forms and manage the registry. No commands needed.
Permissions. Everything goes through Forge permissions, so it works with LuckPerms.
Languages. English, German and Russian.

Recipes
Printer 3 iron / paper, redstone, paper / iron, black dye, iron
Shredder iron, redstone, iron / 3 shears / iron, empty, iron
Forgery kit feather, ink sac, paper / 3 leather
Ticket gate empty, redstone, empty / empty, iron, empty / 3 iron
Archive shelf 3 planks / wooden slab, book, wooden slab / 3 planks
Filing cabinet 3 iron / iron, chest, iron / 3 iron
Scanner 3 glass panes / iron, redstone, iron
Computer iron, glass pane, iron / iron, redstone block, iron / 3 stone buttons

Notes
Back up data/signedsealed.dat. Without it, nothing issued earlier can be verified, and the digital archives are lost.
The client needs a font with Cyrillic. Windows and macOS have one; on Linux, install DejaVu or Liberation.
Documents from 1.x and 2.x keep working after the update.

Found a bug or have an idea? Leave a comment. I read all of them.