Pith Number

pith:FIQ4JV7Q

pith:2026:FIQ4JV7QJ7AUYZVY5V4VFX7T4B

not attested not anchored not stored refs pending

Deep optical spectroscopic monitoring of the pulsating ULX NGC 1313 X-2 with longslit Gemini observations

Rajath Sathyaprakash, Timothy. P. Roberts

arxiv:2606.13116 v1 · 2026-06-11 · astro-ph.HE · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FIQ4JV7QJ7AUYZVY5V4VFX7T4B}

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	2026-06-12T01:09:41.107857Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a21c4d7f04fc14c66b8ed7952dff3e05385d60b1b4a084b9c22b1c96630cc3b

Aliases

arxiv: 2606.13116 · arxiv_version: 2606.13116v1 · doi: 10.48550/arxiv.2606.13116 · pith_short_12: FIQ4JV7QJ7AU · pith_short_16: FIQ4JV7QJ7AUYZVY · pith_short_8: FIQ4JV7Q

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/FIQ4JV7QJ7AUYZVY5V4VFX7T4B \
  | 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: 2a21c4d7f04fc14c66b8ed7952dff3e05385d60b1b4a084b9c22b1c96630cc3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e25c6307cbe6e49af50c489c2d0b8eb48465ebe5a1cc8a8746cf5dd27a4181b8",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-06-11T09:44:23Z",
    "title_canon_sha256": "73d6b9e95917b957b2b7a1aeb3205b7243f080d19131d28b20769ce3f8fd6334"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.13116",
    "kind": "arxiv",
    "version": 1
  }
}