Pith Number

pith:MRYU2TSP

pith:2008:MRYU2TSPXK3VAGCYGZLRFVD6KJ

not attested not anchored not stored refs pending

The effect of Galactic foreground subtraction on redshifted 21-cm observations of quasar HII regions

Nada Petrovic, Paul. M. Geil, Peng Oh, Stuart Wyithe

arxiv:0805.0038 v1 · 2008-05-01 · 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{MRYU2TSPXK3VAGCYGZLRFVD6KJ}

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	2026-05-18T00:39:53.347094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

64714d4e4fbab7501858365712d47e5252d8df444d596105ed57358dda28e148

Aliases

arxiv: 0805.0038 · arxiv_version: 0805.0038v1 · doi: 10.48550/arxiv.0805.0038 · pith_short_12: MRYU2TSPXK3V · pith_short_16: MRYU2TSPXK3VAGCY · pith_short_8: MRYU2TSP

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/MRYU2TSPXK3VAGCYGZLRFVD6KJ \
  | 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: 64714d4e4fbab7501858365712d47e5252d8df444d596105ed57358dda28e148

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "253e4eb2e245b28307fcc063e9f5e00b8999a03f5b40e3d74cb5f7e34533392a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-05-01T01:27:39Z",
    "title_canon_sha256": "6d2d6e243d5aeaba5c5e69ff9e1a6db5f5485b2b8cd38b93c0a12a39cee5862e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.0038",
    "kind": "arxiv",
    "version": 1
  }
}