Pith Number

pith:NK4D4GSQ

pith:1998:NK4D4GSQN4NF4YWEBONHO2BGXS

not attested not anchored not stored refs pending

X-ray spectral evolution of GS 2023+338 (V404 Cyg) during decline after outburst

(2) University of Leicester, C. Done (1), D. Smith (2) ((1) University of Durham, England, England), P. Zycki (1)

arxiv:astro-ph/9811106 v1 · 1998-11-06 · 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{NK4D4GSQN4NF4YWEBONHO2BGXS}

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	2026-07-04T16:07:10.063084Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ab83e1a506f1a5e62c40b9a776826bc9f3a117d02abdc03d9fb13e7101ea555

Aliases

arxiv: astro-ph/9811106 · arxiv_version: astro-ph/9811106v1 · doi: 10.48550/arxiv.astro-ph/9811106 · pith_short_12: NK4D4GSQN4NF · pith_short_16: NK4D4GSQN4NF4YWE · pith_short_8: NK4D4GSQ

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/NK4D4GSQN4NF4YWEBONHO2BGXS \
  | 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: 6ab83e1a506f1a5e62c40b9a776826bc9f3a117d02abdc03d9fb13e7101ea555

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99092202420599fdab446e68918b1b86830da87c85f7f673b24663aab7c2106d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-11-06T12:30:07Z",
    "title_canon_sha256": "42aca5f4ed7bcb1a857932c26d17e93148aba805357253460e814ad064fbee2d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9811106",
    "kind": "arxiv",
    "version": 1
  }
}