Pith Number

pith:V3UI43IY

pith:2005:V3UI43IYQ76FILUQNIDKK4OUXW

not attested not anchored not stored refs pending

The Phantom of the OPRA

A. Coley, J. Latta, S. Hervik

arxiv:astro-ph/0503169 v1 · 2005-03-07 · 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{V3UI43IYQ76FILUQNIDKK4OUXW}

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	2026-07-04T16:50:57.453323Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aee88e6d1887fc542e906a06a571d4bda2d00448456eade4f6276b1fe9f22ed9

Aliases

arxiv: astro-ph/0503169 · arxiv_version: astro-ph/0503169v1 · doi: 10.48550/arxiv.astro-ph/0503169 · pith_short_12: V3UI43IYQ76F · pith_short_16: V3UI43IYQ76FILUQ · pith_short_8: V3UI43IY

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/V3UI43IYQ76FILUQNIDKK4OUXW \
  | 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: aee88e6d1887fc542e906a06a571d4bda2d00448456eade4f6276b1fe9f22ed9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb0e36ead9f91d58ac540b222061f9ef223dc7cab9e6f4254acb44315c7aa93e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-03-07T22:50:25Z",
    "title_canon_sha256": "6352e96ca1b20e9b6ca5f6fb2710ca7064d772dc4340be9e192fb98782a5c2d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0503169",
    "kind": "arxiv",
    "version": 1
  }
}