Pith Number

pith:YMO6Z43B

pith:2011:YMO6Z43BCAX77OBXOPALFEKLA5

not attested not anchored not stored refs pending

Subtracting Foregrounds from Interferometric Measurements of the Redshifted 21 cm Emission

Xiao-Chun Mao

arxiv:1109.5317 v2 · 2011-09-25 · 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{YMO6Z43BCAX77OBXOPALFEKLA5}

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	2026-05-18T02:00:25.531218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c31decf361102fffb83773c0b2914b077f4a7881d8365740ddc8a130d70ac1ff

Aliases

arxiv: 1109.5317 · arxiv_version: 1109.5317v2 · doi: 10.48550/arxiv.1109.5317 · pith_short_12: YMO6Z43BCAX7 · pith_short_16: YMO6Z43BCAX77OBX · pith_short_8: YMO6Z43B

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/YMO6Z43BCAX77OBXOPALFEKLA5 \
  | 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: c31decf361102fffb83773c0b2914b077f4a7881d8365740ddc8a130d70ac1ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd1bc431ce403e36bcbc209b65f3d7d10e5bded6eefd517b00fcc1aab5f2dce7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-25T02:39:14Z",
    "title_canon_sha256": "cff6ab9210dc60f68afe9951cf925d52d57a7cae0daf006cc3d04a69424ed647"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.5317",
    "kind": "arxiv",
    "version": 2
  }
}