Pith Number

pith:Y4THHZ6H

pith:1997:Y4THHZ6HUBWARDEGOEXNROZVGZ

not attested not anchored not stored refs pending

Orbital Parameters for the Soft X-ray Transient 4U 1543-47: Evidence for a Black Hole

(2) Yale University, (3) Harvard-Smithsonian Center for Astrophysics, (4) Massachusetts Institute of Technology), Charles D. Bailyn (2), Jeffrey E. McClintock (3), Jerome A. Orosz (1), Raj K. Jain, Ronald A. Remillard (4) ((1) The Pennsylvania State University

arxiv:astro-ph/9712018 v1 · 1997-12-01 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y4THHZ6HUBWARDEGOEXNROZVGZ}

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	2026-05-18T01:40:14.836366Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c72673e7c7a06c088c86712ed8bb35364776d61290a9c5555204f96670296253

Aliases

arxiv: astro-ph/9712018 · arxiv_version: astro-ph/9712018v1 · doi: 10.48550/arxiv.astro-ph/9712018 · pith_short_12: Y4THHZ6HUBWA · pith_short_16: Y4THHZ6HUBWARDEG · pith_short_8: Y4THHZ6H

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/Y4THHZ6HUBWARDEGOEXNROZVGZ \
  | 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: c72673e7c7a06c088c86712ed8bb35364776d61290a9c5555204f96670296253

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8fed2348652682311ba6b09f2d6d38e70c82eea15a33f80775c3632e7060b962",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-12-01T22:22:01Z",
    "title_canon_sha256": "5f75366a664b5f8b107a853520dd6acd2c95dd1d8eba734a31bfdf813684cb59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9712018",
    "kind": "arxiv",
    "version": 1
  }
}