Pith Number

pith:NFXUPDP4

pith:2015:NFXUPDP4ACUH7H4ZJFT3XYKZCF

not attested not anchored not stored refs pending

The impact of spin temperature fluctuations on the 21-cm moments

Catherine A. Watkinson, Jonathan R. Pritchard

arxiv:1505.07108 v2 · 2015-05-26 · 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{NFXUPDP4ACUH7H4ZJFT3XYKZCF}

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	2026-05-18T01:34:05.183837Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

696f478dfc00a87f9f994967bbe1591144ec0a7da6c8826afb60760fc8d9a32f

Aliases

arxiv: 1505.07108 · arxiv_version: 1505.07108v2 · doi: 10.48550/arxiv.1505.07108 · pith_short_12: NFXUPDP4ACUH · pith_short_16: NFXUPDP4ACUH7H4Z · pith_short_8: NFXUPDP4

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/NFXUPDP4ACUH7H4ZJFT3XYKZCF \
  | 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: 696f478dfc00a87f9f994967bbe1591144ec0a7da6c8826afb60760fc8d9a32f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f359329b34e4a22cd67f479856081ba0875b1af8835cb4a0bc72b2b67f26194",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-05-26T20:00:25Z",
    "title_canon_sha256": "89b1692a229c99a2b364dffa73e873d9abe75829ad58a03014a1049ca687a3bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.07108",
    "kind": "arxiv",
    "version": 2
  }
}