Pith Number

pith:PYAN42ZE

pith:2018:PYAN42ZEB5IDKHIKPHAOT6RHJM

not attested not anchored not stored refs pending

Comparison of results on $N_\mathrm{eff}$ from various Planck likelihoods

Francois Couchot, Hiroaki Imada, Matthieu Tristram, Sophie Henrot-Versill\'e, Sylvain Vanneste, Thibaut Louis, Xavier Garrido

arxiv:1807.05003 v2 · 2018-07-13 · 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{PYAN42ZEB5IDKHIKPHAOT6RHJM}

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	2026-05-17T23:52:41.531880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e00de6b240f50351d0a79c0e9fa274b03905cf815e1987c09af6b593f1dc13c

Aliases

arxiv: 1807.05003 · arxiv_version: 1807.05003v2 · doi: 10.48550/arxiv.1807.05003 · pith_short_12: PYAN42ZEB5ID · pith_short_16: PYAN42ZEB5IDKHIK · pith_short_8: PYAN42ZE

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/PYAN42ZEB5IDKHIKPHAOT6RHJM \
  | 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: 7e00de6b240f50351d0a79c0e9fa274b03905cf815e1987c09af6b593f1dc13c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27a38d05c3bbee0b840e45001f72525ff152b0fdca28364df681fd00e0ee4316",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-07-13T11:01:43Z",
    "title_canon_sha256": "6ba709601cdc89501c99514a4b1008f92328b9ca214175ff8d6573457cdc63f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.05003",
    "kind": "arxiv",
    "version": 2
  }
}