Pith Number

pith:ISCQUIIF

pith:2012:ISCQUIIFNSCH3C5KG6QLWKZJOF

not attested not anchored not stored refs pending

Dark Radiation in extended cosmological scenarios

Alessandro Melchiorri, Elena Giusarma, Maria Archidiacono, Olga Mena

arxiv:1206.0109 v1 · 2012-06-01 · 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{ISCQUIIFNSCH3C5KG6QLWKZJOF}

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	2026-05-18T03:22:40.602553Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44850a21056c847d8baa37a0bb2b29714b313249a8153d72557ab157234ff081

Aliases

arxiv: 1206.0109 · arxiv_version: 1206.0109v1 · doi: 10.48550/arxiv.1206.0109 · pith_short_12: ISCQUIIFNSCH · pith_short_16: ISCQUIIFNSCH3C5K · pith_short_8: ISCQUIIF

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/ISCQUIIFNSCH3C5KG6QLWKZJOF \
  | 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: 44850a21056c847d8baa37a0bb2b29714b313249a8153d72557ab157234ff081

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c9148b15863a920d0fb394864a6b2473e85158bd41b18cbd5c47683aa43d45a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-06-01T07:28:03Z",
    "title_canon_sha256": "df3e0d08fd264a56d36fa41bd4d92cb9a56dad042d62989e921e03fe9e1a75f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.0109",
    "kind": "arxiv",
    "version": 1
  }
}