Pith Number

pith:NKCGI7UA

pith:2011:NKCGI7UAZFDX6D2ENOEVH7FQ3D

not attested not anchored not stored refs pending

The Nature and Cause of Spectral Variability in LMC X-1

D. M. Smith, J. Swank, L. Ruhlen

arxiv:1107.5100 v1 · 2011-07-26 · 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{NKCGI7UAZFDX6D2ENOEVH7FQ3D}

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	2026-05-18T02:01:10.046622Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a84647e80c9477f0f446b8953fcb0d8ed967cc3ce2f6b35687da489bd79ebc7

Aliases

arxiv: 1107.5100 · arxiv_version: 1107.5100v1 · doi: 10.48550/arxiv.1107.5100 · pith_short_12: NKCGI7UAZFDX · pith_short_16: NKCGI7UAZFDX6D2E · pith_short_8: NKCGI7UA

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/NKCGI7UAZFDX6D2ENOEVH7FQ3D \
  | 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: 6a84647e80c9477f0f446b8953fcb0d8ed967cc3ce2f6b35687da489bd79ebc7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "effcccb97ed25a8ce8168ff995dea1637cedd3b98d08d5d320633a8e07b079de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-07-26T01:50:53Z",
    "title_canon_sha256": "ef452a63ae72433c884b9f552c30877840e46b81ac69019747f009ee0b7eef42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.5100",
    "kind": "arxiv",
    "version": 1
  }
}