Pith Number

pith:2HNWLO2J

pith:2021:2HNWLO2JQIC3IY33BNLWKWO6YJ

not attested not anchored not stored refs pending

Introduction to Causal Fermion Systems

Christoph Langer

arxiv:2111.07405 v1 · 2021-11-14 · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2HNWLO2JQIC3IY33BNLWKWO6YJ}

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	2026-07-05T03:31:39.520106Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1db65bb498205b4637b0b576559dec2733538f888bf82b82cc463362a3f1856

Aliases

arxiv: 2111.07405 · arxiv_version: 2111.07405v1 · doi: 10.48550/arxiv.2111.07405 · pith_short_12: 2HNWLO2JQIC3 · pith_short_16: 2HNWLO2JQIC3IY33 · pith_short_8: 2HNWLO2J

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/2HNWLO2JQIC3IY33BNLWKWO6YJ \
  | 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: d1db65bb498205b4637b0b576559dec2733538f888bf82b82cc463362a3f1856

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd17dc026a36dbad84d580abeb7776d2d038513c9f56430b2153b24921fc2b76",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2021-11-14T18:21:19Z",
    "title_canon_sha256": "725465357b0681888d959baecec94ad0a7b0fe2e4590107a54461731aba126b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.07405",
    "kind": "arxiv",
    "version": 1
  }
}