CID.

Prepare evidence for CID review

Buyer translation: this reference page maps the mark to a tool, system, control, deployment, or evidence question. content identifier · multihash with code prefix · CID — a reference page in the Cryptography primitives register.

register 12 · Cryptography primitives· slug cid· family atom 🏷️ · best-fit emoji
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 ten 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 how a record is checked →See how a record is checked
04 ·

The board that carries this.

Related marks, and the surface this one funnels to.

CID is measured into the same evidence record as every other mark in the Cryptography primitives register. That measurement becomes compliance-ready buyer evidence at /trust-packet.

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.
SHA-256 digest
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
Merkle root
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
Hash chain
each block carries the previous block's hash
5 linked blocks with brass continuation arrows
Public key
open teeth · meant to be shared
key ring + shaft + outward teeth + brass ring
Private key
sealed teeth · never leaves the holder
key with inward teeth + brass sealed ring + lock
Nonce
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
Base32
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

Prepare evidence for CID review.

First evidence record within 21 days of access · re-runs in a single business day.

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