Pith Number

pith:4UCW3BOY

pith:2001:4UCW3BOYYDMM7KSL7SBR7CSX6Q

not attested not anchored not stored refs pending

Sherpa: a Mission-Independent Data Analysis Application

Aneta Siemiginowska, Peter E. Freeman, Stephen Doe

arxiv:astro-ph/0108426 v1 · 2001-08-27 · 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{4UCW3BOYYDMM7KSL7SBR7CSX6Q}

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	2026-07-04T16:24:01.396150Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5056d85d8c0d8cfaa4bfc831f8a57f4269313e0ff3e7c7042b476dcfddfc6f8

Aliases

arxiv: astro-ph/0108426 · arxiv_version: astro-ph/0108426v1 · doi: 10.48550/arxiv.astro-ph/0108426 · pith_short_12: 4UCW3BOYYDMM · pith_short_16: 4UCW3BOYYDMM7KSL · pith_short_8: 4UCW3BOY

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/4UCW3BOYYDMM7KSL7SBR7CSX6Q \
  | 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: e5056d85d8c0d8cfaa4bfc831f8a57f4269313e0ff3e7c7042b476dcfddfc6f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fc89b9daed860b0b7f5c667bc4b2b11125f18e84035161daf8af2c9013b82ba",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-08-27T20:36:53Z",
    "title_canon_sha256": "dc04db1fd81727a5cca60a1419ad4ccf13959ef26de1239e87153bb17ac0328d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0108426",
    "kind": "arxiv",
    "version": 1
  }
}