Pith Number

pith:JESV32T5

pith:2011:JESV32T5ZIUVJTVBC7E3SQGYGT

not attested not anchored not stored refs pending

Abundances of Disk Planetary Nebulae in M31 and the Radial Oxygen Gradient

B. Balick, E.M.M. Lehman, K.B. Kwitter, R.B.C. Henry

arxiv:1109.2943 v1 · 2011-09-13 · 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{JESV32T5ZIUVJTVBC7E3SQGYGT}

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	2026-05-18T02:00:33.284419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

49255dea7dca2954cea117c9b940d834fa9cedf9c93d62c1dce9630467bf09ce

Aliases

arxiv: 1109.2943 · arxiv_version: 1109.2943v1 · doi: 10.48550/arxiv.1109.2943 · pith_short_12: JESV32T5ZIUV · pith_short_16: JESV32T5ZIUVJTVB · pith_short_8: JESV32T5

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/JESV32T5ZIUVJTVBC7E3SQGYGT \
  | 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: 49255dea7dca2954cea117c9b940d834fa9cedf9c93d62c1dce9630467bf09ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d89c1d1bac4f6b8c9f3e684c7999025bf87f14fe90be61543a856b8824e03c27",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-09-13T21:50:21Z",
    "title_canon_sha256": "5587491e05504f85e4f9882c461184a9a61413c4f07298c5fabcfa890995e09c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.2943",
    "kind": "arxiv",
    "version": 1
  }
}