Pith Number

pith:HKIHQRH6

pith:2009:HKIHQRH66MQ3W5LKB57UMRUFWM

not attested not anchored not stored refs pending

Compactness of Cold Gas in High-Redshift Galaxies

Danail Obreschkow, Steve Rawlings

arxiv:0908.0724 v1 · 2009-08-05 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HKIHQRH66MQ3W5LKB57UMRUFWM}

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	2026-05-18T04:02:53.067520Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a907844fef321bb756a0f7f464685b32db9640e4cd3c27e9eda28d239dde3b7

Aliases

arxiv: 0908.0724 · arxiv_version: 0908.0724v1 · doi: 10.48550/arxiv.0908.0724 · pith_short_12: HKIHQRH66MQ3 · pith_short_16: HKIHQRH66MQ3W5LK · pith_short_8: HKIHQRH6

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/HKIHQRH66MQ3W5LKB57UMRUFWM \
  | 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: 3a907844fef321bb756a0f7f464685b32db9640e4cd3c27e9eda28d239dde3b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc374a7798e23120bb421b6ac0bdbb32e33e47dfd625eb11483ed802eef8ff47",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-05T18:52:52Z",
    "title_canon_sha256": "649e5bdac7b05777910abe53eda99ce6679159b7e122237e0836c550b2f55d68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.0724",
    "kind": "arxiv",
    "version": 1
  }
}