Pith Number

pith:OW3JK4YE

pith:2016:OW3JK4YEJBCSGV2XCTZGBRI2OY

not attested not anchored not stored refs pending

$^3$He Abundances in Planetary Nebulae

Lizette Guzman-Ramirez

arxiv:1612.02599 v1 · 2016-12-08 · 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{OW3JK4YEJBCSGV2XCTZGBRI2OY}

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	2026-05-18T00:30:46.394096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75b6957304484523575714f260c51a7605f568cf7e41075194472413ba18b461

Aliases

arxiv: 1612.02599 · arxiv_version: 1612.02599v1 · doi: 10.48550/arxiv.1612.02599 · pith_short_12: OW3JK4YEJBCS · pith_short_16: OW3JK4YEJBCSGV2X · pith_short_8: OW3JK4YE

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/OW3JK4YEJBCSGV2XCTZGBRI2OY \
  | 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: 75b6957304484523575714f260c51a7605f568cf7e41075194472413ba18b461

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d894afc3ae36463d865415f76865bbc61b9ec24bab1f07a4827afe9eb0a596c1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-12-08T11:21:06Z",
    "title_canon_sha256": "897e7a9bcc0ed238065439b7b4dbe685523d85af0e774ce9e46388b2d1d949f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.02599",
    "kind": "arxiv",
    "version": 1
  }
}