Pith Number

pith:2NLUTTCO

pith:2011:2NLUTTCOW7QKVFFS4ERANSJYO7

not attested not anchored not stored refs pending

Metals at the surface of last scatter

Christopher M. Hirata, Marc Kamionkowski, Yacine Ali-Ha\"imoud

arxiv:1102.0004 v2 · 2011-01-31 · 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{2NLUTTCOW7QKVFFS4ERANSJYO7}

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	2026-05-18T04:23:45.410607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d35749cc4eb7e0aa94b2e12206c93877eee4cd0a7c36553014031a0779081896

Aliases

arxiv: 1102.0004 · arxiv_version: 1102.0004v2 · doi: 10.48550/arxiv.1102.0004 · pith_short_12: 2NLUTTCOW7QK · pith_short_16: 2NLUTTCOW7QKVFFS · pith_short_8: 2NLUTTCO

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/2NLUTTCOW7QKVFFS4ERANSJYO7 \
  | 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: d35749cc4eb7e0aa94b2e12206c93877eee4cd0a7c36553014031a0779081896

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a904babcfd50feb2fc39236cd2e29d6b702f73c9c5f9bcd3c9ef6f258abc6f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-01-31T21:00:04Z",
    "title_canon_sha256": "3a7e7c2c8e32fea985c8b9b489b96d0239e454a66bc0ef4ffda09750aa6e42cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.0004",
    "kind": "arxiv",
    "version": 2
  }
}