Pith Number

pith:4AVCKFS4

pith:2022:4AVCKFS4EMUJUSE6IB5I3N46ZD

not attested not anchored not stored refs pending

Necessity Specifications for Robustness

James Noble, Julian Mackay, Sophia Drossopoulou, Susan Eisenbach

arxiv:2209.08205 v1 · 2022-09-17 · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4AVCKFS4EMUJUSE6IB5I3N46ZD}

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	2026-07-05T04:58:18.403907Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e02a25165c23289a489e407a8db79ec8d7abb41762d64277208df36f893af3c1

Aliases

arxiv: 2209.08205 · arxiv_version: 2209.08205v1 · doi: 10.48550/arxiv.2209.08205 · pith_short_12: 4AVCKFS4EMUJ · pith_short_16: 4AVCKFS4EMUJUSE6 · pith_short_8: 4AVCKFS4

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/4AVCKFS4EMUJUSE6IB5I3N46ZD \
  | 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: e02a25165c23289a489e407a8db79ec8d7abb41762d64277208df36f893af3c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8432c56600ccb5a35fa50817096ca745715deb5ded0c008cb12576af0ba5b573",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2022-09-17T00:44:54Z",
    "title_canon_sha256": "1b2fd83eb0c51c9590e60d668ad019c3754c4d58ed6d0385b5b8d39e179e998c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2209.08205",
    "kind": "arxiv",
    "version": 1
  }
}