Pith Number

pith:W6KDDBP4

pith:2008:W6KDDBP47V7XM5BPRXO2FTJXDF

not attested not anchored not stored refs pending

Hydrodynamical Velocity Fields in Planetary Nebulae

G. Garcia-Segura, N. Koning, W. Steffen

arxiv:0809.5263 v2 · 2008-09-30 · 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{W6KDDBP47V7XM5BPRXO2FTJXDF}

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	2026-05-18T04:29:26.357471Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7943185fcfd7f76742f8ddda2cd37196ed8700d133f8bf18d40eba89878bc08

Aliases

arxiv: 0809.5263 · arxiv_version: 0809.5263v2 · doi: 10.48550/arxiv.0809.5263 · pith_short_12: W6KDDBP47V7X · pith_short_16: W6KDDBP47V7XM5BP · pith_short_8: W6KDDBP4

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/W6KDDBP47V7XM5BPRXO2FTJXDF \
  | 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: b7943185fcfd7f76742f8ddda2cd37196ed8700d133f8bf18d40eba89878bc08

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8bdc8b09543a8e673c61717639690974886ec1a2c8a26e23d037af78b9f10e78",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-30T17:21:53Z",
    "title_canon_sha256": "25cfa42d7bb596dc2e5f5106043ee6941b3d8cf7ed13981e65a3641167b33b7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.5263",
    "kind": "arxiv",
    "version": 2
  }
}