Pith Number

pith:6L5EE45M

pith:2013:6L5EE45M4JJ6WJTCBZZWCHI3EO

not attested not anchored not stored refs pending

On the physical meaning of the 2.1 keV absorption feature in 4U 1538-52

G. Bernab\'eu, J. J. Rodes Roca, J. M. Torrej\'on, S. Mart\'inez-N\'u\~nez

arxiv:1302.2090 v1 · 2013-02-08 · 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{6L5EE45M4JJ6WJTCBZZWCHI3EO}

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	2026-05-18T03:34:12.805603Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f2fa4273ace253eb26620e73611d1b23a94a4cff23ecc2b86976f4e0fac1db35

Aliases

arxiv: 1302.2090 · arxiv_version: 1302.2090v1 · doi: 10.48550/arxiv.1302.2090 · pith_short_12: 6L5EE45M4JJ6 · pith_short_16: 6L5EE45M4JJ6WJTC · pith_short_8: 6L5EE45M

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/6L5EE45M4JJ6WJTCBZZWCHI3EO \
  | 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: f2fa4273ace253eb26620e73611d1b23a94a4cff23ecc2b86976f4e0fac1db35

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a3a7cc4ba1a8e0dd6226a37827930b8fbd0654581bf768afb6048c18392b1f0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-02-08T17:26:47Z",
    "title_canon_sha256": "1dce9f5b1da175ea139a25e7d59b103a51a337007c6814190ff7b96952f2dc01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.2090",
    "kind": "arxiv",
    "version": 1
  }
}