Pith Number

pith:GRTH6NSE

pith:2018:GRTH6NSEHUJY4AWP7F7TZTDVA4

not attested not anchored not stored refs pending

Securing Fuel for Our Frigid Cosmic Future

Abraham Loeb (Harvard)

arxiv:1806.07170 v1 · 2018-06-19 · physics.pop-ph · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GRTH6NSEHUJY4AWP7F7TZTDVA4}

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	2026-05-18T00:12:51.672402Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

34667f36443d138e02cff97f3ccc75070cf7dafa6ae6a5d0837ea7927d09bc57

Aliases

arxiv: 1806.07170 · arxiv_version: 1806.07170v1 · doi: 10.48550/arxiv.1806.07170 · pith_short_12: GRTH6NSEHUJY · pith_short_16: GRTH6NSEHUJY4AWP · pith_short_8: GRTH6NSE

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/GRTH6NSEHUJY4AWP7F7TZTDVA4 \
  | 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: 34667f36443d138e02cff97f3ccc75070cf7dafa6ae6a5d0837ea7927d09bc57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f07888f1d24883b95b6f3c99197d65ba3a9a0e99e1f5504af796c6b6d4c7f11",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2018-06-19T11:58:33Z",
    "title_canon_sha256": "6730dfe0c9561bf6d784ab6c1bffc454a09319416238550c419e4f99544760f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.07170",
    "kind": "arxiv",
    "version": 1
  }
}