Pith Number

pith:D6IECT3M

pith:2021:D6IECT3MNAGK7YQ7MRJFQTQIDJ

not attested not anchored not stored refs pending

Spectral analysis of the low-mass X-ray pulsar 4U 1822-371: Reflection component in a high-inclination system

A. Anitra, A.F. Gambino, A. Marino, A. Riggio, A. Sanna, L. Burderi, R. Iaria, S.M. Mazzola, T. Di Salvo

arxiv:2109.01023 v1 · 2021-09-02 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D6IECT3MNAGK7YQ7MRJFQTQIDJ}

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	2026-07-05T03:26:06.577585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f90414f6c680cafe21f6452584e081a65b5e07d84c13b1db5c4f86d2f83c98d

Aliases

arxiv: 2109.01023 · arxiv_version: 2109.01023v1 · doi: 10.48550/arxiv.2109.01023 · pith_short_12: D6IECT3MNAGK · pith_short_16: D6IECT3MNAGK7YQ7 · pith_short_8: D6IECT3M

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/D6IECT3MNAGK7YQ7MRJFQTQIDJ \
  | 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: 1f90414f6c680cafe21f6452584e081a65b5e07d84c13b1db5c4f86d2f83c98d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99a33110ac452c5ecc9c632e7930360e30c6ba499a30fd9c0c96787e7a12965c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-09-02T15:35:38Z",
    "title_canon_sha256": "9e0aefa785f69d6a2f7002c07ac125e3e4f7022d7c2d9b0a0c721b72819a7266"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.01023",
    "kind": "arxiv",
    "version": 1
  }
}