Pith Number

pith:CJIIG5F6

pith:2008:CJIIG5F65SCW6T2FZCTLLNOIL3

not attested not anchored not stored refs pending

Foreground Contamination in Interferometric Measurements of the Redshifted 21 cm Power Spectrum

Jacqueline N. Hewitt (MIT), Judd D. Bowman (Caltech), Miguel F. Morales (UW)

arxiv:0807.3956 v2 · 2008-07-25 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CJIIG5F65SCW6T2FZCTLLNOIL3}

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	2026-05-18T04:29:33.163170Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

12508374beec856f4f45c8a6b5b5c85ec226ff6467b53a3f52761f71ab02c98a

Aliases

arxiv: 0807.3956 · arxiv_version: 0807.3956v2 · doi: 10.48550/arxiv.0807.3956 · pith_short_12: CJIIG5F65SCW · pith_short_16: CJIIG5F65SCW6T2F · pith_short_8: CJIIG5F6

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/CJIIG5F65SCW6T2FZCTLLNOIL3 \
  | 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: 12508374beec856f4f45c8a6b5b5c85ec226ff6467b53a3f52761f71ab02c98a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9039482f43908fd14912fd6193b08376e5313c4dfb8afab87d3caaeb07781946",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-07-25T13:34:40Z",
    "title_canon_sha256": "1ca1f73fe86b209c675b9e67805d7d4f05be4e3399b0e93eaa95f9baeda40c75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.3956",
    "kind": "arxiv",
    "version": 2
  }
}