Pith Number

pith:HEF3CDW3

pith:1999:HEF3CDW35L6X2VF7E5WFHXMGZB

not attested not anchored not stored refs pending

Broadband Spectral Analysis of PKS 0528+134: A Report on Six Years of EGRET Observations

A. Sillanpaa, D. J. Thompson, L. O. Takalo, M. Boettcher, P. Sreekumar, R. C. Hartman, R. Mukherjee, T. Pursimo, W. A. Mahoney

arxiv:astro-ph/9901106 v2 · 1999-01-10 · astro-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{HEF3CDW35L6X2VF7E5WFHXMGZB}

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	2026-07-04T16:10:36.232139Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

390bb10edbeafd7d54bf276c53dd86c84ec87e979dd415037cdab48c7b0e9c1e

Aliases

arxiv: astro-ph/9901106 · arxiv_version: astro-ph/9901106v2 · doi: 10.48550/arxiv.astro-ph/9901106 · pith_short_12: HEF3CDW35L6X · pith_short_16: HEF3CDW35L6X2VF7 · pith_short_8: HEF3CDW3

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/HEF3CDW35L6X2VF7E5WFHXMGZB \
  | 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: 390bb10edbeafd7d54bf276c53dd86c84ec87e979dd415037cdab48c7b0e9c1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ec7ab89f53b62f1b2af932a781ba29295a75b8eec71aeaeb818daf66024bac6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-01-10T15:16:16Z",
    "title_canon_sha256": "12256cc4f7b8aa63e7a863db6717e28f03afe11f26c786031d92f11f19f54130"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9901106",
    "kind": "arxiv",
    "version": 2
  }
}