Pith Number

pith:LDHGRK27

pith:1999:LDHGRK27AUFSW3TEOAQM5MKIWZ

not attested not anchored not stored refs pending

Simultaneous Multifrequency Observations of the BL Lac MS 0205.7+3509

A.R. Foley, B. McBreen, D. Watson, H. Teraesranta, L. Hanlon, L. Metcalfe, M. Tashiro, N. Smith, S.F. Sanchez, V. Beckmann

arxiv:astro-ph/9903044 v1 · 1999-03-02 · 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{LDHGRK27AUFSW3TEOAQM5MKIWZ}

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	2026-05-18T04:21:32.377491Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58ce68ab5f050b2b6e647020ceb148b64c143df4a2bead11650902cb9fd20b43

Aliases

arxiv: astro-ph/9903044 · arxiv_version: astro-ph/9903044v1 · doi: 10.48550/arxiv.astro-ph/9903044 · pith_short_12: LDHGRK27AUFS · pith_short_16: LDHGRK27AUFSW3TE · pith_short_8: LDHGRK27

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/LDHGRK27AUFSW3TEOAQM5MKIWZ \
  | 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: 58ce68ab5f050b2b6e647020ceb148b64c143df4a2bead11650902cb9fd20b43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c7bf434a538d4fa36f3714bef3038eb4e294eb6af310ba2d3c09da4b8ee0431",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-03-02T17:53:17Z",
    "title_canon_sha256": "23b944561de0cec5080bedf21cbed4fadfff51cd6cdb75801d33e62c1849b711"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9903044",
    "kind": "arxiv",
    "version": 1
  }
}