Pith Number

pith:52IPCKLL

pith:2011:52IPCKLL33TXOLKXEA2WOURKQD

not attested not anchored not stored refs pending

Global amount of dust in the universe

Masataka Fukugita

arxiv:1103.4191 v1 · 2011-03-22 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{52IPCKLL33TXOLKXEA2WOURKQD}

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	2026-05-18T04:26:21.412171Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee90f1296bdee7772d57203567522a80c1f5d4a5fda642dce53f4dd1ef648fbe

Aliases

arxiv: 1103.4191 · arxiv_version: 1103.4191v1 · doi: 10.48550/arxiv.1103.4191 · pith_short_12: 52IPCKLL33TX · pith_short_16: 52IPCKLL33TXOLKX · pith_short_8: 52IPCKLL

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/52IPCKLL33TXOLKXEA2WOURKQD \
  | 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: ee90f1296bdee7772d57203567522a80c1f5d4a5fda642dce53f4dd1ef648fbe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e7eab7527203429382ba42efa85966f6c97da033f17bd082ee5d83c229b6e83",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-03-22T02:26:05Z",
    "title_canon_sha256": "70dce298187b225adf9c5435173307e9a4d129dbe049b42e7f78af3c596b1bd3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.4191",
    "kind": "arxiv",
    "version": 1
  }
}