Pith Number

pith:W2VDSDTR

pith:2019:W2VDSDTRFU5QDDFCWYDIQJWMJJ

not attested not anchored not stored refs pending

No magnetars in ULXs

Andrew King, Jean-Pierre Lasota

arxiv:1903.03624 v1 · 2019-03-08 · astro-ph.HE · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W2VDSDTRFU5QDDFCWYDIQJWMJJ}

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	2026-05-17T23:50:55.160729Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6aa390e712d3b018ca2b6068826cc4a66395b42fafc3ca8c77e1ea64d20cc4e

Aliases

arxiv: 1903.03624 · arxiv_version: 1903.03624v1 · doi: 10.48550/arxiv.1903.03624 · pith_short_12: W2VDSDTRFU5Q · pith_short_16: W2VDSDTRFU5QDDFC · pith_short_8: W2VDSDTR

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/W2VDSDTRFU5QDDFCWYDIQJWMJJ \
  | 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: b6aa390e712d3b018ca2b6068826cc4a66395b42fafc3ca8c77e1ea64d20cc4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b1e36bda9f623dca13b73a4b0a3f5c7dd776a953dfe0543163460e0eb68f9c3",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-03-08T19:00:02Z",
    "title_canon_sha256": "1adfa44f471dc43eb75acab2de0bff8027a764535fa6a73e48e099a476e2db40"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.03624",
    "kind": "arxiv",
    "version": 1
  }
}