Pith Number

pith:UMPF2YYR

pith:1999:UMPF2YYRE6VUINDHWNXTDRA6YY

not attested not anchored not stored refs pending

IAU 177 - A week in review

D. R. Lorimer

arxiv:astro-ph/9911259 v2 · 1999-11-15 · 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{UMPF2YYRE6VUINDHWNXTDRA6YY}

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	2026-07-04T14:17:19.283838Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a31e5d631127ab443467b36f31c41ec60dc7c20e579049ae6dd8e914e5dfbd5b

Aliases

arxiv: astro-ph/9911259 · arxiv_version: astro-ph/9911259v2 · doi: 10.48550/arxiv.astro-ph/9911259 · pith_short_12: UMPF2YYRE6VU · pith_short_16: UMPF2YYRE6VUINDH · pith_short_8: UMPF2YYR

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/UMPF2YYRE6VUINDHWNXTDRA6YY \
  | 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: a31e5d631127ab443467b36f31c41ec60dc7c20e579049ae6dd8e914e5dfbd5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3df9969f35a90528e1a55432c9a20ca054861d27b2bd2c212e7794f2357e8fc9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-11-15T11:59:51Z",
    "title_canon_sha256": "fa272c1ed91e27e35a7975abe1014078ce7630e064b62abd59a63465f48e742f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9911259",
    "kind": "arxiv",
    "version": 2
  }
}