Pith Number

pith:Q6XZX2MA

pith:2009:Q6XZX2MAO5JGBAS2RT6Y2ZLMTB

not attested not anchored not stored refs pending

The Smithsonian/NASA Astrophysics Data System (ADS) Decennial Report

Alberto Accomazzi, Michael J. Kurtz, Stephen S. Murray

arxiv:0903.3228 v1 · 2009-03-18 · astro-ph.IM · cs.DL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q6XZX2MAO5JGBAS2RT6Y2ZLMTB}

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	2026-07-04T15:39:39.032867Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87af9be980775260825a8cfd8d656c986a03818f64f8aa949815cda5084ce4c0

Aliases

arxiv: 0903.3228 · arxiv_version: 0903.3228v1 · doi: 10.48550/arxiv.0903.3228 · pith_short_12: Q6XZX2MAO5JG · pith_short_16: Q6XZX2MAO5JGBAS2 · pith_short_8: Q6XZX2MA

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/Q6XZX2MAO5JGBAS2RT6Y2ZLMTB \
  | 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: 87af9be980775260825a8cfd8d656c986a03818f64f8aa949815cda5084ce4c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c44439147becf86a80f4a66b8ff3285fcbbb8ef3f79d9f089a041bef2cda8e56",
    "cross_cats_sorted": [
      "cs.DL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-03-18T19:36:57Z",
    "title_canon_sha256": "44272f67a71e89bbbb68beb3e7172e83f25f30d149df902bda2a24c0f46a5c94"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.3228",
    "kind": "arxiv",
    "version": 1
  }
}