Pith Number

pith:O4YMIEWU

pith:2015:O4YMIEWURUV56STBJBPTN5FC7J

not attested not anchored not stored refs pending

The orbital period evolution of the supersoft X-ray source CAL 87

Iminhaji Ablimit (NAOC), Xiang-Dong Li (NJU)

arxiv:1510.09039 v1 · 2015-10-30 · astro-ph.HE · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O4YMIEWURUV56STBJBPTN5FC7J}

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	2026-05-18T01:24:46.032529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7730c412d48d2bdf4a61485f36f4a2fa6cb4a140c2ca812b993f2386064827b2

Aliases

arxiv: 1510.09039 · arxiv_version: 1510.09039v1 · doi: 10.48550/arxiv.1510.09039 · pith_short_12: O4YMIEWURUV5 · pith_short_16: O4YMIEWURUV56STB · pith_short_8: O4YMIEWU

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/O4YMIEWURUV56STBJBPTN5FC7J \
  | 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: 7730c412d48d2bdf4a61485f36f4a2fa6cb4a140c2ca812b993f2386064827b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39ec43be964a8aaff33ae2d100fbe9f0366a2c6185f08c0795e61b73110b7789",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-10-30T10:21:13Z",
    "title_canon_sha256": "26049fc15229250a77cca4aacdecb1f3252cd5979c2167dbd5c6ef2d43aa591f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.09039",
    "kind": "arxiv",
    "version": 1
  }
}