Pith Number

pith:C7ZQZW3E

pith:2019:C7ZQZW3ET6A5ESNCNSCX5DYOAD

not attested not anchored not stored refs pending

Cool circumgalactic gas of passive galaxies from cosmological inflow

Andrea Afruni (Kapteyn Institute), Filippo Fraternali (Kapteyn Institute), Gabriele Pezzulli (ETH)

arxiv:1903.06182 v1 · 2019-03-14 · astro-ph.GA · 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{C7ZQZW3ET6A5ESNCNSCX5DYOAD}

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	2026-05-17T23:47:16.807513Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17f30cdb649f81d249a26c857e8f0e00e6f6eb92ffbf585cc22ae9c1aa99fcc5

Aliases

arxiv: 1903.06182 · arxiv_version: 1903.06182v1 · doi: 10.48550/arxiv.1903.06182 · pith_short_12: C7ZQZW3ET6A5 · pith_short_16: C7ZQZW3ET6A5ESNC · pith_short_8: C7ZQZW3E

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/C7ZQZW3ET6A5ESNCNSCX5DYOAD \
  | 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: 17f30cdb649f81d249a26c857e8f0e00e6f6eb92ffbf585cc22ae9c1aa99fcc5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ef81c9119a3e6c7d86fb1b6c3f2b3f4ceb52a0f7238462a5f618f2f13200a79",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-03-14T18:00:04Z",
    "title_canon_sha256": "aac24bcfe3fc9a342ac4d7048b0f7a89b6430b1768047a3a55050c2b4dc44e78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.06182",
    "kind": "arxiv",
    "version": 1
  }
}