Pith Number

pith:QM3DZ3AL

pith:2018:QM3DZ3ALJVDUTHH7374QOLSM4H

not attested not anchored not stored refs pending

Natural explanation for 21cm absorption signals via axion-induced cooling

Chuang Li, Nick Houston, Qiaoli Yang, Tianjun Li, Xin Zhang

arxiv:1805.04426 v3 · 2018-05-11 · hep-ph · 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{QM3DZ3ALJVDUTHH7374QOLSM4H}

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	2026-05-18T00:05:31.189910Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83363cec0b4d47499cffdff9072e4ce1cf22da42805b6093a8dd10adbd0d7b83

Aliases

arxiv: 1805.04426 · arxiv_version: 1805.04426v3 · doi: 10.48550/arxiv.1805.04426 · pith_short_12: QM3DZ3ALJVDU · pith_short_16: QM3DZ3ALJVDUTHH7 · pith_short_8: QM3DZ3AL

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/QM3DZ3ALJVDUTHH7374QOLSM4H \
  | 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: 83363cec0b4d47499cffdff9072e4ce1cf22da42805b6093a8dd10adbd0d7b83

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01d5cf99b406edf22ff98c5b68dda2aed4420cd4af7c23904341f288bb98d170",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2018-05-11T14:37:35Z",
    "title_canon_sha256": "64a182e671d517927a3aef188c4d1d2fc32217d7f9686f2cbccbbf2ad71f2334"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.04426",
    "kind": "arxiv",
    "version": 3
  }
}