Register 12 · Cryptography primitives

CID.

CID — a reference page in the Cryptography primitives register.

Open the Console See how a record is checked

register 12 · Cryptography primitives· reference mark

01 ·

Promise. atom

The contract this mark binds — derived, not asserted.

CID — a reference page in the Cryptography primitives register.

Answers: What is CID in the Planisphere corpus library?

02 ·

What this is.

twelve marks · the evidence record's actual machinery · same construction · 200×200 · integer geometry · currentColor + brass-deep

Use. content identifier · multihash with code prefix.

Source. stacked rectangles representing hash prefix + content.

Register. 12 · Cryptography primitives — one of the 17 registers of the PLANiSPHERE corpus library.

03 ·

See it work.

Evidence record you can check — not code you have to trust.

Planisphere measures your tool deployment against CID and seals the result into a signed, Merkle-rooted evidence record. The grade recomputes on your own hardware; the model state never crosses the boundary.

See the record demo →See how a record is checked

04 ·

The board that carries this.

Related marks, and the surface this one funnels to.

CID is a reference mark in the Cryptography primitives register. Read the related buyer-facing product context at /evidence.

Base32 reg 12 · alphanumeric encoding · 5-bit chunks Content-addressable store reg 12 · addressed by what it is, not where it lives Ed25519 signature reg 12 · twisted-curve signature primitive Hash chain reg 12 · each block carries the previous block's hash

05 ·

Routes here from.

Where this mark is referenced in the Planisphere surface.

About

Any internal link in the Planisphere site that names "CID" canonicalises here.

06 ·

Sibling marks. Cryptography primitives

Same register · same construction.

collapsing variable input to a fixed 64-char hash

wave of varying bars → arrow → 4 brass output bars

Ed25519 signature

twisted-curve signature primitive

figure-8 elliptic curve + brass key dot

the single brass node atop the tree

large brass root + descending branches + 4 leaves

Inclusion proof

path from one leaf to the root

tree with one path drawn in brass

each block carries the previous block's hash

5 linked blocks with brass continuation arrows

open teeth · meant to be shared

key ring + shaft + outward teeth + brass ring

sealed teeth · never leaves the holder

key with inward teeth + brass sealed ring + lock

a number used once · single-use entropy

a single brass token + diagonal slash through it

Timestamp signature

clock face + a signature mark

circle + hands + brass swirl beneath

alphanumeric encoding · 5-bit chunks

compact grid of cells, brass-filled subset

Content-addressable store

addressed by what it is, not where it lives

stack of blocks each labeled with its hash prefix

See the record CID asks for.

The console shows the evidence; the docs show the endpoints; the briefing shows what the product does and does not claim.

Open the Console Read the Docs Read the capability briefing

API ·

When a regulator asks for proof, hand over records — not assurances.

record the duty · seal the receipt · verify offline

Planisphere records each duty event — an output marked, a disclosure shown, a review made — and seals it into a receipt that verifies offline against our published keys. You send hashes, never content. A record is evidence a third party can check; it is not a certification and not a legal determination.

Open the Console Read the Docs Read the capability briefing

See how a record is checked