Pith Number

pith:DA7KZX7O

pith:2011:DA7KZX7O7NQWH3I2TXDWKZQH3D

not attested not anchored not stored refs pending

Are falling planets spinning up their host stars?

A. Collier Cameron, B. Smalley, C. Hall, D. J. A. Brown, L. Hebb

arxiv:1103.3599 v1 · 2011-03-18 · 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{DA7KZX7O7NQWH3I2TXDWKZQH3D}

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	2026-05-18T02:02:49.945492Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

183eacdfeefb6163ed1a9dc7656607d8f423ed26fcdcc29e13adabb868492726

Aliases

arxiv: 1103.3599 · arxiv_version: 1103.3599v1 · doi: 10.48550/arxiv.1103.3599 · pith_short_12: DA7KZX7O7NQW · pith_short_16: DA7KZX7O7NQWH3I2 · pith_short_8: DA7KZX7O

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/DA7KZX7O7NQWH3I2TXDWKZQH3D \
  | 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: 183eacdfeefb6163ed1a9dc7656607d8f423ed26fcdcc29e13adabb868492726

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f163b9fff296b2cf1dbeede49545377af135feb7e0b0d9abe6d6a209be3ffae8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2011-03-18T11:12:50Z",
    "title_canon_sha256": "d3b0be06e6da32b44fbdb4e5b2c69ab32f404819ab956defa34ae671380f12bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.3599",
    "kind": "arxiv",
    "version": 1
  }
}