Pith Number

pith:7EIHYGZO

pith:2009:7EIHYGZOB3E766TR2DJFSHI7IS

not attested not anchored not stored refs pending

The Simulated HI Sky at low redshift

2), (2) CSIRO-ATNF (3) Astronomy Department, Attila Popping (1, Benjamin D. Oppenheimer (3) ((1) Kapteyn Astronomical Institute, Robert Braun (2), Romeel Dave (3), University of Arizona)

arxiv:0906.3067 v1 · 2009-06-17 · 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{7EIHYGZOB3E766TR2DJFSHI7IS}

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	2026-05-18T02:13:19.569614Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9107c1b2e0ec9ff7a71d0d2591d1f4480a46564aa42ea677b8e436861c5d099

Aliases

arxiv: 0906.3067 · arxiv_version: 0906.3067v1 · doi: 10.48550/arxiv.0906.3067 · pith_short_12: 7EIHYGZOB3E7 · pith_short_16: 7EIHYGZOB3E766TR · pith_short_8: 7EIHYGZO

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/7EIHYGZOB3E766TR2DJFSHI7IS \
  | 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: f9107c1b2e0ec9ff7a71d0d2591d1f4480a46564aa42ea677b8e436861c5d099

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e367729eb0df72beb04dad9c0259054bd08d2904ce10a71a322d01ab4c99fde",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-06-17T04:21:40Z",
    "title_canon_sha256": "90ae2b4033ff448eceaf3c8cc4812f56f7b06bf065437dbbe6823bbf4b338d84"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.3067",
    "kind": "arxiv",
    "version": 1
  }
}