Pith Number

pith:FAY4XOZS

pith:2018:FAY4XOZSF5E4IOQEYXTPYQKNVW

not attested not anchored not stored refs pending

Observable windows for the QCD axion through $N_\text{eff}$

Alessio Notari, Ricardo Z. Ferreira

arxiv:1801.06090 v2 · 2018-01-18 · hep-ph · astro-ph.CO · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FAY4XOZSF5E4IOQEYXTPYQKNVW}

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	2026-05-18T00:15:46.698450Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2831cbbb322f49c43a04c5e6fc414dad9ba58cbfda7191840f9d2d809cb4e912

Aliases

arxiv: 1801.06090 · arxiv_version: 1801.06090v2 · doi: 10.48550/arxiv.1801.06090 · pith_short_12: FAY4XOZSF5E4 · pith_short_16: FAY4XOZSF5E4IOQE · pith_short_8: FAY4XOZS

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/FAY4XOZSF5E4IOQEYXTPYQKNVW \
  | 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: 2831cbbb322f49c43a04c5e6fc414dad9ba58cbfda7191840f9d2d809cb4e912

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae4cf38de72391f5f63c70c03fa7b3313c31866da9b3921de7c0d045928e21cf",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2018-01-18T15:15:34Z",
    "title_canon_sha256": "f668dc9c52db6427363056c34050fab1824bbfeacf01017cedf63909974aa271"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.06090",
    "kind": "arxiv",
    "version": 2
  }
}