Pith Number

pith:FPBPD2F4

pith:1997:FPBPD2F4XGTTUDOSRZCHRY4E52

not attested not anchored not stored refs pending

Calculation of the emergent spectrum and observation of primordial black holes

Andrew F. Heckler (Ohio State Univ.)

arxiv:astro-ph/9702027 v1 · 1997-02-03 · astro-ph · hep-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{FPBPD2F4XGTTUDOSRZCHRY4E52}

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

Constraints on Primordial Black Holes

Receipt and verification

First computed	2026-05-18T04:17:53.644303Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2bc2f1e8bcb9a73a0dd28e4478e384ee9d0cbaf3ba83d617a2d873f753d909ec

Aliases

arxiv: astro-ph/9702027 · arxiv_version: astro-ph/9702027v1 · doi: 10.48550/arxiv.astro-ph/9702027 · pith_short_12: FPBPD2F4XGTT · pith_short_16: FPBPD2F4XGTTUDOS · pith_short_8: FPBPD2F4

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/FPBPD2F4XGTTUDOSRZCHRY4E52 \
  | 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: 2bc2f1e8bcb9a73a0dd28e4478e384ee9d0cbaf3ba83d617a2d873f753d909ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ded6f197b95952eaf935d47ad00f1be519096b99e315a93c383ad5d5d2be979",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-02-03T17:10:01Z",
    "title_canon_sha256": "7dfebe202df39e2a8d9cee345c56868af458db517b93a676df26bcec00bf35b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9702027",
    "kind": "arxiv",
    "version": 1
  }
}