Pith Number

pith:KEEF2LDY

pith:2020:KEEF2LDYZFNPXDRNFSG7KYOMQH

not attested not anchored not stored refs pending

Discovery of annular X-ray emission centered on MAXI J1421-613: Dust-scattering X-rays?

Kumiko K. Nobukawa, Masayoshi Nobukawa, Shigeo Yamauchi

arxiv:2002.03096 v1 · 2020-02-08 · 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{KEEF2LDYZFNPXDRNFSG7KYOMQH}

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	2026-07-05T00:48:55.588846Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51085d2c78c95afb8e2d2c8df561cc81cccefa0d5c38f44268051bc6bed3ae88

Aliases

arxiv: 2002.03096 · arxiv_version: 2002.03096v1 · doi: 10.48550/arxiv.2002.03096 · pith_short_12: KEEF2LDYZFNP · pith_short_16: KEEF2LDYZFNPXDRN · pith_short_8: KEEF2LDY

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/KEEF2LDYZFNPXDRNFSG7KYOMQH \
  | 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: 51085d2c78c95afb8e2d2c8df561cc81cccefa0d5c38f44268051bc6bed3ae88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "057f3484f349d819fb9c660f693d4080b362ce27830ecf58ed4a989e6090f3c9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-02-08T06:09:47Z",
    "title_canon_sha256": "42feb773cdfb06f8017adc80dedfbdfd7030efce62456df8fd0446fd7c1956a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.03096",
    "kind": "arxiv",
    "version": 1
  }
}