Pith Number

pith:5ZGDV3MN

pith:1997:5ZGDV3MNSE6L6NVDSNVQWGXS2U

not attested not anchored not stored refs pending

HST Imaging of the BL Lacertae Object OJ 287

Brian Yanny, Buell T. Jannuzi, Chris Impey

arxiv:astro-ph/9705161 v1 · 1997-05-20 · 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{5ZGDV3MNSE6L6NVDSNVQWGXS2U}

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	2026-05-18T04:25:11.999433Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee4c3aed8d913cbf36a3936b0b1af2d515649ad58c27f6705af34dbb055b5ad0

Aliases

arxiv: astro-ph/9705161 · arxiv_version: astro-ph/9705161v1 · doi: 10.48550/arxiv.astro-ph/9705161 · pith_short_12: 5ZGDV3MNSE6L · pith_short_16: 5ZGDV3MNSE6L6NVD · pith_short_8: 5ZGDV3MN

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/5ZGDV3MNSE6L6NVDSNVQWGXS2U \
  | 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: ee4c3aed8d913cbf36a3936b0b1af2d515649ad58c27f6705af34dbb055b5ad0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d0046a61c1b17bf5737dc581471b303a1a1983c45b7fe1cc89f2f88709d6d6f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-05-20T20:51:53Z",
    "title_canon_sha256": "c9bf73fa6859d2dfef1766e8082bd17e73f33db8ff4b1bf2a6188fb95e89b3e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9705161",
    "kind": "arxiv",
    "version": 1
  }
}