Pith Number

pith:Q2OKIECV

pith:2003:Q2OKIECVUD6W62527SXCODVYZV

not attested not anchored not stored refs pending

The 2003 eclipse of EE Cep is coming. A review of past eclipses

(2) National Astronomical Observatory Rozhen, Bulgaria), D. Graczyk (1), D. Kolev (2), I. Iliev (2) ((1) Centre for Astronomy, M. Mikolajewski (1), Poland, Torun, T. Tomov (1)

arxiv:astro-ph/0303547 v1 · 2003-03-25 · 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{Q2OKIECVUD6W62527SXCODVYZV}

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	2026-05-18T04:21:41.565593Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

869ca41055a0fd6f6bbafcae270eb8cd7ba747b311467ea480b20c991d4e8988

Aliases

arxiv: astro-ph/0303547 · arxiv_version: astro-ph/0303547v1 · doi: 10.48550/arxiv.astro-ph/0303547 · pith_short_12: Q2OKIECVUD6W · pith_short_16: Q2OKIECVUD6W6252 · pith_short_8: Q2OKIECV

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/Q2OKIECVUD6W62527SXCODVYZV \
  | 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: 869ca41055a0fd6f6bbafcae270eb8cd7ba747b311467ea480b20c991d4e8988

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9fc886badc1b132f4daefcee5a7da707fc6a830de64a85af61b584c8af50453c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-03-25T12:31:04Z",
    "title_canon_sha256": "010a8469a47ed7c69da7e0b97832c3cf62a1e350bc0e6a4f21a678979f5a55f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0303547",
    "kind": "arxiv",
    "version": 1
  }
}