Pith Number

pith:F7XFJAPN

pith:2011:F7XFJAPNRTXWEVL3EYRVBAC7OX

not attested not anchored not stored refs pending

Estimating the mass of the debris disc in HD 69830

Kevin Heng

arxiv:1104.4499 v2 · 2011-04-22 · astro-ph.GA · 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{F7XFJAPNRTXWEVL3EYRVBAC7OX}

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	2026-05-18T02:02:15.976102Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fee5481ed8cef62557b262350805f75e52c48384837275fbd4c18ca12379c74

Aliases

arxiv: 1104.4499 · arxiv_version: 1104.4499v2 · doi: 10.48550/arxiv.1104.4499 · pith_short_12: F7XFJAPNRTXW · pith_short_16: F7XFJAPNRTXWEVL3 · pith_short_8: F7XFJAPN

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/F7XFJAPNRTXWEVL3EYRVBAC7OX \
  | 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: 2fee5481ed8cef62557b262350805f75e52c48384837275fbd4c18ca12379c74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a328080b3b19c5709a98590c713654bd3fc5f93832850979a7a868a8455fde34",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-04-22T20:00:38Z",
    "title_canon_sha256": "cbe942222f1be7460f62fba71f8280de9950d993443ba9b3f9c75ae6177a50f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.4499",
    "kind": "arxiv",
    "version": 2
  }
}