Pith Number

pith:6PQUP3CP

pith:2009:6PQUP3CPMCJZI6ML7QVUMOQ5RY

not attested not anchored not stored refs pending

Searching for Faint Planetary Nebulae Using the Digital Sky Survey

Agn\'es Acker, Dana Patchick, Dave Riddle, David J. Frew, George H. Jacoby, Jaakko Saloranta, Matthias Kronberger, Michael Howell, Philipp Teutsch, Quentin Parker, Richard Crisp

arxiv:0910.0465 v1 · 2009-10-05 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6PQUP3CPMCJZI6ML7QVUMOQ5RY}

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	2026-05-18T02:11:34.824087Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3e147ec4f609394798bfc2b463a1d8e01e93e0918c77c1a37aca642a93fa2c7

Aliases

arxiv: 0910.0465 · arxiv_version: 0910.0465v1 · doi: 10.48550/arxiv.0910.0465 · pith_short_12: 6PQUP3CPMCJZ · pith_short_16: 6PQUP3CPMCJZI6ML · pith_short_8: 6PQUP3CP

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/6PQUP3CPMCJZI6ML7QVUMOQ5RY \
  | 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: f3e147ec4f609394798bfc2b463a1d8e01e93e0918c77c1a37aca642a93fa2c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94488f9c31f352dea253c43a411917d82616b1b31b1931fab3311cac43c30038",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-10-05T16:28:07Z",
    "title_canon_sha256": "d1b26e427c4e91c8518a8ecd7a4531e277b14b135c0121c87164951f26f42964"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.0465",
    "kind": "arxiv",
    "version": 1
  }
}