Pith Number

pith:UNWP6BBC

pith:2014:UNWP6BBCDTDUMSORBEL4EX7PXF

not attested not anchored not stored refs pending

Identification of the Optical Counterpart of Fermi Black Widow Millisecond Pulsar PSR J1544+4937

A.K.H. Kong, Branimir Sesar, Daniel A. Perley, David L. Kaplan, Eric Bellm, Lars Bildsten, Rene P. Breton, Sterl Phinney, Sumin Tang, T.-C. Yen, Thomas A. Prince, William M. Wolf, Yi Cao

arxiv:1407.0081 v2 · 2014-07-01 · 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{UNWP6BBCDTDUMSORBEL4EX7PXF}

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	2026-05-18T01:42:43.256447Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a36cff04221cc74649d10917c25fefb9447c8648d4ad116f4145e4e6060c5a2e

Aliases

arxiv: 1407.0081 · arxiv_version: 1407.0081v2 · doi: 10.48550/arxiv.1407.0081 · pith_short_12: UNWP6BBCDTDU · pith_short_16: UNWP6BBCDTDUMSOR · pith_short_8: UNWP6BBC

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/UNWP6BBCDTDUMSORBEL4EX7PXF \
  | 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: a36cff04221cc74649d10917c25fefb9447c8648d4ad116f4145e4e6060c5a2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b36e7040b85387e8eb819f92c384d4c4bd0d56a6165c4dd1bfe18efab8e4102",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2014-07-01T00:02:50Z",
    "title_canon_sha256": "7f0d6572cab6cfd6766ea03614367ad88af6dc00fd58bc44c17c35997d4a0208"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.0081",
    "kind": "arxiv",
    "version": 2
  }
}