Pith Number

pith:EZGPQEJK

pith:2012:EZGPQEJKLDXH7O22DIEDGHSQO5

not attested not anchored not stored refs pending

Very deep spectroscopy of the bright Saturn Nebula NGC 7009 - II. Analysis of the rich optical recombination spectrum

Xiao-Wei Liu, Xuan Fang

arxiv:1212.0005 v1 · 2012-12-02 · 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{EZGPQEJKLDXH7O22DIEDGHSQO5}

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	2026-05-18T01:52:52.712809Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

264cf8112a58ee7fbb5a1a08331e50775d546dafd6288a13bbd83ee78fd5c6d5

Aliases

arxiv: 1212.0005 · arxiv_version: 1212.0005v1 · doi: 10.48550/arxiv.1212.0005 · pith_short_12: EZGPQEJKLDXH · pith_short_16: EZGPQEJKLDXH7O22 · pith_short_8: EZGPQEJK

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/EZGPQEJKLDXH7O22DIEDGHSQO5 \
  | 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: 264cf8112a58ee7fbb5a1a08331e50775d546dafd6288a13bbd83ee78fd5c6d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7703a48ad0b3c870d32105be041a62a77c80dd7ecd1833b222e5e34978106da",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-12-02T16:14:49Z",
    "title_canon_sha256": "3cb23d498ebf740ae11b8962c8b4fbcd7de010b69a11e4baf786c3a9ab78b3ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.0005",
    "kind": "arxiv",
    "version": 1
  }
}