Pith Number

pith:AACT4D4B

pith:2009:AACT4D4BEVKDBXBWGOF27ICLNA

not attested not anchored not stored refs pending

International Year of Astronomy Invited Review on Exoplanets

John A. Johnson

arxiv:0903.3059 v1 · 2009-03-17 · astro-ph.EP · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AACT4D4BEVKDBXBWGOF27ICLNA}

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	2026-05-18T02:14:27.698826Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00053e0f81255430dc36338bafa04b682d0194d80c4c4e6653af1ced94eaca6d

Aliases

arxiv: 0903.3059 · arxiv_version: 0903.3059v1 · doi: 10.48550/arxiv.0903.3059 · pith_short_12: AACT4D4BEVKD · pith_short_16: AACT4D4BEVKDBXBW · pith_short_8: AACT4D4B

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/AACT4D4BEVKDBXBWGOF27ICLNA \
  | 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: 00053e0f81255430dc36338bafa04b682d0194d80c4c4e6653af1ced94eaca6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "051b1126a4cfce3aa79bfcf8aaed6446f3f9612669b4857b035e5c8dd2c268cb",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-03-17T22:01:34Z",
    "title_canon_sha256": "9b2ba54a70dcf75640983bb64f83e75d81f4be2329e2b25aa214f4374043afbb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.3059",
    "kind": "arxiv",
    "version": 1
  }
}