Pith Number

pith:7ZPJO3E4

pith:2013:7ZPJO3E4U4LHJXKXFYG5SRCVMQ

not attested not anchored not stored refs pending

Observed Properties of Extrasolar Planets

Andrew W. Howard

arxiv:1305.0542 v1 · 2013-05-02 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7ZPJO3E4U4LHJXKXFYG5SRCVMQ}

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	2026-05-18T03:26:39.893208Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe5e976c9ca71674dd572e0dd94455640e715fc340b1d88a4a7d6f8d130e9a93

Aliases

arxiv: 1305.0542 · arxiv_version: 1305.0542v1 · doi: 10.48550/arxiv.1305.0542 · pith_short_12: 7ZPJO3E4U4LH · pith_short_16: 7ZPJO3E4U4LHJXKX · pith_short_8: 7ZPJO3E4

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/7ZPJO3E4U4LHJXKXFYG5SRCVMQ \
  | 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: fe5e976c9ca71674dd572e0dd94455640e715fc340b1d88a4a7d6f8d130e9a93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91cd1e8b88649290957acdee38dc9de04c1c65abd78baf7e7e63761a10d6212b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2013-05-02T19:18:19Z",
    "title_canon_sha256": "e02f63648f85e30fba6b74a57797b8cb83b7837382692346e7e2166763983c8e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0542",
    "kind": "arxiv",
    "version": 1
  }
}