Pith Number

pith:TOBCAE5L

pith:2009:TOBCAE5LK6XO2YWNHAJYBPN5RK

not attested not anchored not stored refs pending

Is cold gas fuelling the radio galaxy NGC 315?

A.B. Peck, A. Capetti, G. van Moorsel, H.R. de Ruiter, P. Parma, R. Fanti, R. Morganti, T.A. Oosterloo

arxiv:0908.3951 v1 · 2009-08-27 · 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{TOBCAE5LK6XO2YWNHAJYBPN5RK}

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	2026-05-18T02:12:22.331029Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b822013ab57aeed62cd381380bdbd8aab4920422d74405e8157926e718c93b6

Aliases

arxiv: 0908.3951 · arxiv_version: 0908.3951v1 · doi: 10.48550/arxiv.0908.3951 · pith_short_12: TOBCAE5LK6XO · pith_short_16: TOBCAE5LK6XO2YWN · pith_short_8: TOBCAE5L

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/TOBCAE5LK6XO2YWNHAJYBPN5RK \
  | 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: 9b822013ab57aeed62cd381380bdbd8aab4920422d74405e8157926e718c93b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2cd7282f5983e253d37d982a864e8ad035ad9d182806594b50a31dd9faf95133",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-27T08:41:25Z",
    "title_canon_sha256": "0c691d361b63cd88cf2c33615661a23328055aeb3d274b1149982be329a7a53c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.3951",
    "kind": "arxiv",
    "version": 1
  }
}