Pith Number

pith:7JLFPPII

pith:2015:7JLFPPIINZM5D3R45EG7KBFYYE

not attested not anchored not stored refs pending

Does the 62-day X-ray periodicity come from ULX M82 X-1?

Jifeng Liu, Jincheng Guo, Jing Wang, Yanli Qiu

arxiv:1509.01793 v1 · 2015-09-06 · 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{7JLFPPIINZM5D3R45EG7KBFYYE}

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	2026-05-18T01:33:50.565896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa5657bd086e59d1ee3ce90df504b8c1288e8bfc7dee9888fdd656866d6cc89a

Aliases

arxiv: 1509.01793 · arxiv_version: 1509.01793v1 · doi: 10.48550/arxiv.1509.01793 · pith_short_12: 7JLFPPIINZM5 · pith_short_16: 7JLFPPIINZM5D3R4 · pith_short_8: 7JLFPPII

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/7JLFPPIINZM5D3R45EG7KBFYYE \
  | 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: fa5657bd086e59d1ee3ce90df504b8c1288e8bfc7dee9888fdd656866d6cc89a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc1cd5d6541007ba1273f2238306362e5f2f256e44ed2e64f699e2a5b53b3934",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-09-06T09:56:16Z",
    "title_canon_sha256": "9c6fa189ef6f20502178d26a25c676f50306fde3d7325b0e7d61e85cab40a12c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.01793",
    "kind": "arxiv",
    "version": 1
  }
}