Pith Number

pith:GNQDDMTK

pith:2009:GNQDDMTK57WUFN6UPEE3KWQ43T

not attested not anchored not stored refs pending

Space, time and machines

Arto Annila

arxiv:0910.2629 v2 · 2009-10-14 · physics.gen-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GNQDDMTK57WUFN6UPEE3KWQ43T}

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	2026-05-18T03:53:17.882257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

336031b26aefed42b7d47909b55a1cdcc5c9c374b52a950980494242389b386a

Aliases

arxiv: 0910.2629 · arxiv_version: 0910.2629v2 · doi: 10.48550/arxiv.0910.2629 · pith_short_12: GNQDDMTK57WU · pith_short_16: GNQDDMTK57WUFN6U · pith_short_8: GNQDDMTK

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/GNQDDMTK57WUFN6UPEE3KWQ43T \
  | 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: 336031b26aefed42b7d47909b55a1cdcc5c9c374b52a950980494242389b386a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3356f69f398016c4f803bc97346c932b949e72d4d08585cec59a66c583e756f0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2009-10-14T14:21:16Z",
    "title_canon_sha256": "7d0e6f9095de54ae8632478054d772ed6c4c1876815ce162b1a52e2d6a38b933"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.2629",
    "kind": "arxiv",
    "version": 2
  }
}