Pith Number

pith:QASC7AXV

pith:2018:QASC7AXVQWFDPU4UGOI4AC2WAF

not attested not anchored not stored refs pending

A Perspective on Unique Information: Directionality, Intuitions, and Secret Key Agreement

James P. Crutchfield, Jeffrey Emenheiser, Ryan G. James

arxiv:1808.08606 v1 · 2018-08-26 · cs.IT · cs.CR · math.IT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QASC7AXVQWFDPU4UGOI4AC2WAF}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:07:13.900516Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80242f82f5858a37d3943391c00b560173992185b11d0d65cd31158a9390f08b

Aliases

arxiv: 1808.08606 · arxiv_version: 1808.08606v1 · doi: 10.48550/arxiv.1808.08606 · pith_short_12: QASC7AXVQWFD · pith_short_16: QASC7AXVQWFDPU4U · pith_short_8: QASC7AXV

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/QASC7AXVQWFDPU4UGOI4AC2WAF \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 80242f82f5858a37d3943391c00b560173992185b11d0d65cd31158a9390f08b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc50cb49d1b982281d7160b35caddd8195ad0ce3467cda05c7225da6161822d1",
    "cross_cats_sorted": [
      "cs.CR",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-08-26T18:22:33Z",
    "title_canon_sha256": "e75f465580eae80acf41051f196b6fd8a2ae84f1fb05af39b93743d80c2ce57f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.08606",
    "kind": "arxiv",
    "version": 1
  }
}