Pith Number

pith:BEKJGPLD

pith:2010:BEKJGPLDPW5P3PV6UQDTXWQMTJ

not attested not anchored not stored refs pending

Planetary nebulae in the elliptical galaxy NGC 821: kinematics and distance determination

A. M. Teodorescu, A. Riffeser, F. Bernardi, R. H. Mendez, R. P. Kudritzki

arxiv:1008.2237 v1 · 2010-08-13 · 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{BEKJGPLDPW5P3PV6UQDTXWQMTJ}

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	2026-05-18T02:05:48.730934Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0914933d637dbafdbebea4073bda0c9a7d59bf99641240a96487168e68780f2b

Aliases

arxiv: 1008.2237 · arxiv_version: 1008.2237v1 · doi: 10.48550/arxiv.1008.2237 · pith_short_12: BEKJGPLDPW5P · pith_short_16: BEKJGPLDPW5P3PV6 · pith_short_8: BEKJGPLD

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/BEKJGPLDPW5P3PV6UQDTXWQMTJ \
  | 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: 0914933d637dbafdbebea4073bda0c9a7d59bf99641240a96487168e68780f2b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b603ca9fde6d485fcf497d6873fa1fa0f8ae157c1c4551cc1e4f1d89e9fe3963",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-08-13T00:34:55Z",
    "title_canon_sha256": "ed96de4625ac2d9b69616764022c5d0ece9721d7713aea5819ed12a842633776"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.2237",
    "kind": "arxiv",
    "version": 1
  }
}