Pith Number

pith:GTLF4M57

pith:2022:GTLF4M57QVG65473CAJAVZZAM5

not attested not anchored not stored refs pending

Measuring the mass of the black widow PSR J1555-2908

C. J. Clark, D. Mata-Sanchez, G. Voisin, J. P. Halpern, L. Nieder, M. H. van Kerkwijk, M. R. Kennedy, P. S. Ray, R. P. Breton, T. R. Marsh, V. S. Dhillon

arxiv:2202.05111 v1 · 2022-02-09 · 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{GTLF4M57QVG65473CAJAVZZAM5}

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	2026-07-05T04:01:10.443268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

34d65e33bf854deef3fb10120ae72067552c53bba20458ea414609718192b93c

Aliases

arxiv: 2202.05111 · arxiv_version: 2202.05111v1 · doi: 10.48550/arxiv.2202.05111 · pith_short_12: GTLF4M57QVG6 · pith_short_16: GTLF4M57QVG65473 · pith_short_8: GTLF4M57

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/GTLF4M57QVG65473CAJAVZZAM5 \
  | 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: 34d65e33bf854deef3fb10120ae72067552c53bba20458ea414609718192b93c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee86db02c25f4158d98051731330790a6ab0629b8c9c6d69027b5ec509e741ac",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2022-02-09T09:27:01Z",
    "title_canon_sha256": "4f400f6d368567c524d377e2119182fe3896c64e391e2dc2b1ef068b7b8c6c81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.05111",
    "kind": "arxiv",
    "version": 1
  }
}