Pith Number

pith:OS4UEQGL

pith:2019:OS4UEQGLQ46VT6MACKQRZ6LE5S

not attested not anchored not stored refs pending

Neil Gehrels Swift Observatory studies of supersoft novae

A.P. Beardmore, J.P. Osborne (University of Leicester), K.L. Page

arxiv:1908.02004 v1 · 2019-08-06 · 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{OS4UEQGLQ46VT6MACKQRZ6LE5S}

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	2026-07-05T01:24:27.651000Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74b94240cb873d59f98012a11cf964eca8edbbe06b2f0478dfb1b920aeb17241

Aliases

arxiv: 1908.02004 · arxiv_version: 1908.02004v1 · doi: 10.48550/arxiv.1908.02004 · pith_short_12: OS4UEQGLQ46V · pith_short_16: OS4UEQGLQ46VT6MA · pith_short_8: OS4UEQGL

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/OS4UEQGLQ46VT6MACKQRZ6LE5S \
  | 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: 74b94240cb873d59f98012a11cf964eca8edbbe06b2f0478dfb1b920aeb17241

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1172787f61688e39d0f0af572bc6b0abf54fa9f94226be3bde781df3e42b0b81",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-08-06T08:16:44Z",
    "title_canon_sha256": "38645a4b82c8d921d975a0d46e5f73ffd97c9fed5cf85b0fc2eb34eaed76f234"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.02004",
    "kind": "arxiv",
    "version": 1
  }
}