Pith Number

pith:A3AQUWSG

pith:2009:A3AQUWSGZQFTSRJQNBUS5PMIUQ

not attested not anchored not stored refs pending

An HI absorbing circumnuclear disk in Cygnus A

2), Christian Struve (1, John E. Conway (3) ((1) Netherlands Foundation for Research in Astronomy (2) Kapteyn Institute, University of Groningen (3) Onsala Space Observatory)

arxiv:0910.5705 v2 · 2009-10-29 · 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{A3AQUWSGZQFTSRJQNBUS5PMIUQ}

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	2026-05-18T02:11:01.629515Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06c10a5a46cc0b39453068692ebd88a42f71f1c98e605de7e456cd340f8697eb

Aliases

arxiv: 0910.5705 · arxiv_version: 0910.5705v2 · doi: 10.48550/arxiv.0910.5705 · pith_short_12: A3AQUWSGZQFT · pith_short_16: A3AQUWSGZQFTSRJQ · pith_short_8: A3AQUWSG

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/A3AQUWSGZQFTSRJQNBUS5PMIUQ \
  | 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: 06c10a5a46cc0b39453068692ebd88a42f71f1c98e605de7e456cd340f8697eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc9d09a859fcbf8a57f3e749eff3ee7916d17b3610697e560f2194702968bf1b",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-29T19:04:45Z",
    "title_canon_sha256": "838323fc8e5d921ddbf7328bd8d31d72d9a9f2aefcd61be6a676d3958cc73d57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5705",
    "kind": "arxiv",
    "version": 2
  }
}