Pith Number

pith:4SFCPVZX

pith:2009:4SFCPVZX6Q7C5GH7S2LGLID7YT

not attested not anchored not stored refs pending

A long trail behind the planetary nebula HFG1 (PK 136+05) and its precataclysmic binary central star V664 Cas

(2) Jodrell Bank Centre for Astrophysics, 3) ((1) Institute of Astronomy & Astrophysics, (3) Astronomical Laboratory, Department of Physics, Greece, Greece), J. Meaburn (2), M. Lloyd (2), National Observatory of Athens, P. Boumis (1), S. Akras (1, UK, University of Manchester, University of Patras

arxiv:0903.2852 v1 · 2009-03-16 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4SFCPVZX6Q7C5GH7S2LGLID7YT}

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	2026-05-18T02:14:27.927677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e48a27d737f43e2e98ff969665a07fc4ef0867f29c4c483e4349f83589cc08fe

Aliases

arxiv: 0903.2852 · arxiv_version: 0903.2852v1 · doi: 10.48550/arxiv.0903.2852 · pith_short_12: 4SFCPVZX6Q7C · pith_short_16: 4SFCPVZX6Q7C5GH7 · pith_short_8: 4SFCPVZX

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/4SFCPVZX6Q7C5GH7S2LGLID7YT \
  | 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: e48a27d737f43e2e98ff969665a07fc4ef0867f29c4c483e4349f83589cc08fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4307fd7f2492741a1f0b80b2095c6e4d3efc4440b46d79c0cc31cc7b17c3465b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-03-16T20:46:30Z",
    "title_canon_sha256": "1b332409a88b62b8bf646215eb276c399f2801dbd2db4f3260fd612c65f21d89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2852",
    "kind": "arxiv",
    "version": 1
  }
}