Pith Number

pith:L7SQDXKJ

pith:2006:L7SQDXKJAZTT4NSPPVMAFZJKYM

not attested not anchored not stored refs pending

INTEGRAL spectral variability study of the atoll 4U 1820-30: first detection of hard X-ray emission

2), Andrzej A. Zdziarski (3) ((1)IASF/INAF-Roma, Angela Bazzano (1), Antonella Tarana (1, Italy (2) Universita' di Roma Tor Vergata, Italy (3)Centrum Astronomiczne im. M. Kopernika, Pietro Ubertini (1), Poland), Warszawa

arxiv:astro-ph/0608599 v1 · 2006-08-28 · 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{L7SQDXKJAZTT4NSPPVMAFZJKYM}

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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.

Cited by

1 paper in Pith

The first IXPE view of the eclipsing ADC source 4U 1822-37

Receipt and verification

First computed	2026-07-04T15:16:51.792753Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5fe501dd4906673e364f7d5802e52ac30835d4674c4d82abdf519cf034a80c7f

Aliases

arxiv: astro-ph/0608599 · arxiv_version: astro-ph/0608599v1 · doi: 10.48550/arxiv.astro-ph/0608599 · pith_short_12: L7SQDXKJAZTT · pith_short_16: L7SQDXKJAZTT4NSP · pith_short_8: L7SQDXKJ

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/L7SQDXKJAZTT4NSPPVMAFZJKYM \
  | 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: 5fe501dd4906673e364f7d5802e52ac30835d4674c4d82abdf519cf034a80c7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b66dad9542cb9dfe76e1b4c65aea687b3dbb8e6d22b8f81aa6ae6e2430114ba3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-08-28T16:12:27Z",
    "title_canon_sha256": "dc925b9109ee5a7d97ac097eda3812100aa23a99f2a58f66adb3f47388834bc8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0608599",
    "kind": "arxiv",
    "version": 1
  }
}