Pith Number

pith:CDDHPUDE

pith:2004:CDDHPUDEK73DB7XRATOXCAC2LQ

not attested not anchored not stored refs pending

Recombination Line vs. Forbidden Line Abundances in Planetary Nebulae

Donald R. Garnett, Mark Robertson-Tessi

arxiv:astro-ph/0412099 v1 · 2004-12-03 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CDDHPUDEK73DB7XRATOXCAC2LQ}

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	2026-07-04T16:45:21.095082Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10c677d06457f630fef104dd71005a5c03dd9d04b1e92b30b45a791ea5dcaa9d

Aliases

arxiv: astro-ph/0412099 · arxiv_version: astro-ph/0412099v1 · doi: 10.48550/arxiv.astro-ph/0412099 · pith_short_12: CDDHPUDEK73D · pith_short_16: CDDHPUDEK73DB7XR · pith_short_8: CDDHPUDE

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/CDDHPUDEK73DB7XRATOXCAC2LQ \
  | 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: 10c677d06457f630fef104dd71005a5c03dd9d04b1e92b30b45a791ea5dcaa9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c4b0fe6bd272c6cd24e87e2f91545a15c5d0fb570d6ea6eb24964adccac6adc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-12-03T22:57:10Z",
    "title_canon_sha256": "07f97412e302f32897494a28d8e646231d247891fe19b6bf5f8d41ccaa5baa10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0412099",
    "kind": "arxiv",
    "version": 1
  }
}