Pith Number

pith:AT32HCQS

pith:2026:AT32HCQSIS7WAREYLP5BRFNMNB

not attested not anchored not stored refs pending

Radio Recombination Line Contamination in Post-Reionization 21 cm Intensity Mapping

Matthew McQuinn, Pip Petersen, Yakov Faerman

arxiv:2607.26180 v1 · 2026-07-28 · 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{AT32HCQSIS7WAREYLP5BRFNMNB}

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	2026-07-30T00:08:38.944404Z
Builder	pith-number-builder-2026-05-17-v1
Signature	unsigned_v0
Schema	pith-number/v1.0

Canonical hash

04f7a38a1244bf6044985bfa1895ac685c9e203d2682f8f471fc07a03316cb1f

Aliases

arxiv: 2607.26180 · arxiv_version: 2607.26180v1 · doi: 10.48550/arxiv.2607.26180 · pith_short_12: AT32HCQSIS7W · pith_short_16: AT32HCQSIS7WAREY · pith_short_8: AT32HCQS

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/AT32HCQSIS7WAREYLP5BRFNMNB \
  | 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: 04f7a38a1244bf6044985bfa1895ac685c9e203d2682f8f471fc07a03316cb1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88dc78862ee35add92f07d593ed434d59fe049f5629299b14e028ae618e6c6a8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2026-07-28T18:38:20Z",
    "title_canon_sha256": "222d19d5e3956fe5dbf9b37229155ffe6b6e86015d90eeea8acb18b3d62b9d08"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.26180",
    "kind": "arxiv",
    "version": 1
  }
}