Pith Number

pith:DJAIDGIT

pith:1999:DJAIDGITS4VQ7DLLYGEXBGD6QP

not attested not anchored not stored refs pending

EUVE Observations of Her X-1 at the End of the Short High State

D. A. Leahy, H. Marshall

arxiv:astro-ph/9903118 v1 · 1999-03-09 · 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{DJAIDGITS4VQ7DLLYGEXBGD6QP}

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	2026-07-04T14:16:35.924914Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a40819913972b0f8d6bc18970987e83e1928e6599b8599dd7ddfe25f5ac2bc5

Aliases

arxiv: astro-ph/9903118 · arxiv_version: astro-ph/9903118v1 · doi: 10.48550/arxiv.astro-ph/9903118 · pith_short_12: DJAIDGITS4VQ · pith_short_16: DJAIDGITS4VQ7DLL · pith_short_8: DJAIDGIT

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/DJAIDGITS4VQ7DLLYGEXBGD6QP \
  | 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: 1a40819913972b0f8d6bc18970987e83e1928e6599b8599dd7ddfe25f5ac2bc5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb1042cb9d9a6fff6eb48f1b5100b9c7b5ae31ce3f9a9b4b64b784a010d6a339",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-03-09T00:12:45Z",
    "title_canon_sha256": "054c8730212513639cc2c7621b5c84f07d258bb22f7b34fa405f848087f36eb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9903118",
    "kind": "arxiv",
    "version": 1
  }
}