Pith Number

pith:4NPKOEWN

pith:2011:4NPKOEWN2YRAAMLDLTCKSMB5OS

not attested not anchored not stored refs pending

Long-term X-ray monitoring of LS I +61 303: analysis of spectral variability and flares

Daniela Hadasch, Diego F. Torres, Jian Li, Jianmin Wang, Nanda Rea, Paul S. Ray, Peter Kretschmar, Shu Zhang, YuPeng Chen

arxiv:1103.4205 v1 · 2011-03-22 · astro-ph.HE

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

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	2026-05-18T02:02:48.421623Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e35ea712cdd6220031635cc4a9303d74865c1f626398028a64c9dd74cd0f3f87

Aliases

arxiv: 1103.4205 · arxiv_version: 1103.4205v1 · doi: 10.48550/arxiv.1103.4205 · pith_short_12: 4NPKOEWN2YRA · pith_short_16: 4NPKOEWN2YRAAMLD · pith_short_8: 4NPKOEWN

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/4NPKOEWN2YRAAMLDLTCKSMB5OS \
  | 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: e35ea712cdd6220031635cc4a9303d74865c1f626398028a64c9dd74cd0f3f87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3374964494d30a8536f73cae3fcfd5650f2d907fa4c3c77d262f440a886ed769",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-03-22T05:36:23Z",
    "title_canon_sha256": "bd984675816c3166a1aed55210fc7cf3396c8d54e0ebafcf84bba3f46d2a7a4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.4205",
    "kind": "arxiv",
    "version": 1
  }
}