Pith Number

pith:HZ2J7262

pith:2009:HZ2J7262X6WP2DVMMW6N6ZF5KH

not attested not anchored not stored refs pending

The Paczynski-Wiita potential: A step-by-step "derivation"

Marek A. Abramowicz

arxiv:0904.0913 v1 · 2009-04-06 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HZ2J7262X6WP2DVMMW6N6ZF5KH}

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	2026-05-18T02:14:07.300655Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e749febdabfacfd0eac65bcdf64bd51e92fabd4a886b5c37c6a9aa344463347

Aliases

arxiv: 0904.0913 · arxiv_version: 0904.0913v1 · doi: 10.48550/arxiv.0904.0913 · pith_short_12: HZ2J7262X6WP · pith_short_16: HZ2J7262X6WP2DVM · pith_short_8: HZ2J7262

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/HZ2J7262X6WP2DVMMW6N6ZF5KH \
  | 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: 3e749febdabfacfd0eac65bcdf64bd51e92fabd4a886b5c37c6a9aa344463347

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49d6979341368710e6f53eba4ccdaaee142ac4b6dcce2620ac819c8400923578",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-04-06T13:22:22Z",
    "title_canon_sha256": "55290380bc60a283b72e70dda167e4534de07c11f89c7ab0d17d005a8e48b1ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0913",
    "kind": "arxiv",
    "version": 1
  }
}