Pith Number

pith:SDMY2VYN

pith:2013:SDMY2VYNUBLPUK6HB7SZDVCP7V

not attested not anchored not stored refs pending

The Shared Causal Pasts and Futures of Cosmological Events

Andrew S. Friedman, David I. Kaiser, Jason Gallicchio

arxiv:1305.3943 v2 · 2013-05-16 · astro-ph.CO · astro-ph.GA · astro-ph.HE · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SDMY2VYNUBLPUK6HB7SZDVCP7V}

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	2026-05-18T03:14:40.724241Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90d98d570da056fa2bc70fe591d44ffd46cbda0381c346e103d7df89468ea814

Aliases

arxiv: 1305.3943 · arxiv_version: 1305.3943v2 · doi: 10.48550/arxiv.1305.3943 · pith_short_12: SDMY2VYNUBLP · pith_short_16: SDMY2VYNUBLPUK6H · pith_short_8: SDMY2VYN

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/SDMY2VYNUBLPUK6HB7SZDVCP7V \
  | 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: 90d98d570da056fa2bc70fe591d44ffd46cbda0381c346e103d7df89468ea814

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b770d34ae50b425dc9c1912f0dd627deb512e00fd7cee574e8af92100f0bb46",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-05-16T21:56:47Z",
    "title_canon_sha256": "ce9319ad8802e67144f84b31087bdb2a00577e3e7575227b3ec7714cacb349a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.3943",
    "kind": "arxiv",
    "version": 2
  }
}