Pith Number

pith:T4FPPKPF

pith:2013:T4FPPKPFQT7T7TE6ZUX5J75ZCV

not attested not anchored not stored refs pending

Remarks on mechanical approach to observable Universe

Alexander Zhuk, Maxim Eingorn

arxiv:1309.4924 v2 · 2013-09-19 · astro-ph.CO · gr-qc · hep-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T4FPPKPFQT7T7TE6ZUX5J75ZCV}

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	2026-05-18T02:51:42.091282Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f0af7a9e584ff3fcc9ecd2fd4ffb915655d9fbfa9e630bed02b0afceb1fb4f8

Aliases

arxiv: 1309.4924 · arxiv_version: 1309.4924v2 · doi: 10.48550/arxiv.1309.4924 · pith_short_12: T4FPPKPFQT7T · pith_short_16: T4FPPKPFQT7T7TE6 · pith_short_8: T4FPPKPF

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/T4FPPKPFQT7T7TE6ZUX5J75ZCV \
  | 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: 9f0af7a9e584ff3fcc9ecd2fd4ffb915655d9fbfa9e630bed02b0afceb1fb4f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7622b022bc5d931b8abadce45a6824e9c40f3c0757c7de26fdadb935eff9398b",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-09-19T10:46:20Z",
    "title_canon_sha256": "e70448adaece4cf5a2c8b31c6aeaf370937fe46d7f8bbb4ce40a7921f58d2880"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.4924",
    "kind": "arxiv",
    "version": 2
  }
}