Pith Number

pith:XTM6L72L

pith:2018:XTM6L72LRWO4IX5V2S2E3YBJQU

not attested not anchored not stored refs pending

The 21cm Absorption Line and Axion Quark Nugget Dark Matter Model

A.R. Zhitnitsky, K. Lawson

arxiv:1804.07340 v3 · 2018-04-19 · 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{XTM6L72LRWO4IX5V2S2E3YBJQU}

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	2026-05-17T23:51:09.739992Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bcd9e5ff4b8d9dc45fb5d4b44de029852eeb2b9786c5a789770b686607db97ba

Aliases

arxiv: 1804.07340 · arxiv_version: 1804.07340v3 · doi: 10.48550/arxiv.1804.07340 · pith_short_12: XTM6L72LRWO4 · pith_short_16: XTM6L72LRWO4IX5V · pith_short_8: XTM6L72L

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/XTM6L72LRWO4IX5V2S2E3YBJQU \
  | 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: bcd9e5ff4b8d9dc45fb5d4b44de029852eeb2b9786c5a789770b686607db97ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ef63221cb37f7c9fa40ee61c61c5e7a16474069c7ab6bdd077c7076d08000bf",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2018-04-19T19:12:17Z",
    "title_canon_sha256": "c1e940fd891abbd5bb3afd39ede89667088c43c980efc1df3c2d17fc7496ca42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.07340",
    "kind": "arxiv",
    "version": 3
  }
}