Pith Number

pith:GOPDERF7

pith:2005:GOPDERF7FJKD7SHCTZ5JBVC5IS

not attested not anchored not stored refs pending

Red giant variables: OGLE--II and MACHO

L.L. Kiss, P. Lah

arxiv:astro-ph/0509618 v1 · 2005-09-21 · 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{GOPDERF7FJKD7SHCTZ5JBVC5IS}

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	2026-05-18T04:33:50.763009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

339e3244bf2a543fc8e29e7a90d45d449f4e3652b979389536f95063ef039ce9

Aliases

arxiv: astro-ph/0509618 · arxiv_version: astro-ph/0509618v1 · doi: 10.48550/arxiv.astro-ph/0509618 · pith_short_12: GOPDERF7FJKD · pith_short_16: GOPDERF7FJKD7SHC · pith_short_8: GOPDERF7

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/GOPDERF7FJKD7SHCTZ5JBVC5IS \
  | 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: 339e3244bf2a543fc8e29e7a90d45d449f4e3652b979389536f95063ef039ce9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0480ebcefeb9ca2067d207cf0fe3da0df9fbe1278c41a86e3b4804747f59602f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-21T07:22:55Z",
    "title_canon_sha256": "f60abe5ec822bab95361227da9fd1ebf29a86514a7fa12d6e74c587bff272430"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509618",
    "kind": "arxiv",
    "version": 1
  }
}