Pith Number

pith:H2BS5T3E

pith:2018:H2BS5T3E2QSPHS2OBWN2ABZFXI

not attested not anchored not stored refs pending

Life Versus Dark Energy: How An Advanced Civilization Could Resist the Accelerating Expansion of the Universe

Dan Hooper

arxiv:1806.05203 v1 · 2018-06-13 · astro-ph.CO · astro-ph.GA · physics.pop-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{H2BS5T3E2QSPHS2OBWN2ABZFXI}

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.

Cited by

1 paper in Pith

Shadows of Giants: Constraints on Stupendously Large Black Holes from Negative Sources against the Cosmic Microwave Background

Receipt and verification

First computed	2026-05-18T00:13:16.828105Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e832ecf64d424f3cb4e0d9ba00725ba030974e407290adfb6c778df20b2fe43

Aliases

arxiv: 1806.05203 · arxiv_version: 1806.05203v1 · doi: 10.48550/arxiv.1806.05203 · pith_short_12: H2BS5T3E2QSP · pith_short_16: H2BS5T3E2QSPHS2O · pith_short_8: H2BS5T3E

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/H2BS5T3E2QSPHS2OBWN2ABZFXI \
  | 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: 3e832ecf64d424f3cb4e0d9ba00725ba030974e407290adfb6c778df20b2fe43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "541ff0e5fbdf83d5531d0fa9d46c478f47eac53b903266015c0a88a3f2f4f49e",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "physics.pop-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-06-13T18:10:51Z",
    "title_canon_sha256": "a121e58e521c91094792e13de876c70bb372abf10dcfa0a4c47632e1a3ede0aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.05203",
    "kind": "arxiv",
    "version": 1
  }
}