Pith Number

pith:O6AFAXIL

pith:2006:O6AFAXILWCNVVKUETO7KCZYPF4

not attested not anchored not stored refs pending

Interpretation of the expansion law of planetary nebulae

Hideyuki Kamaya, Hiroko Matsumoto, Tsubasa Fukue

arxiv:astro-ph/0609376 v1 · 2006-09-14 · 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{O6AFAXILWCNVVKUETO7KCZYPF4}

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	2026-05-18T01:40:29.666425Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7780505d0bb09b5aaa849bbea1670f2f34e616778533eb9cf63a8f3903b55cc1

Aliases

arxiv: astro-ph/0609376 · arxiv_version: astro-ph/0609376v1 · doi: 10.48550/arxiv.astro-ph/0609376 · pith_short_12: O6AFAXILWCNV · pith_short_16: O6AFAXILWCNVVKUE · pith_short_8: O6AFAXIL

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/O6AFAXILWCNVVKUETO7KCZYPF4 \
  | 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: 7780505d0bb09b5aaa849bbea1670f2f34e616778533eb9cf63a8f3903b55cc1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c86b6c34dc7cb3e4ce36e676ab47dd253248b42b0b46c52ec2cc8cd28fbea0d1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-09-14T04:09:04Z",
    "title_canon_sha256": "edd75d8c7acfbde51968fd5e1cb81c7881c837f6d0282fd27a4aa2579c417288"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0609376",
    "kind": "arxiv",
    "version": 1
  }
}