Pith Number

pith:MCOWUCZN

pith:2021:MCOWUCZNXBDWCFSWPFKEH4JYYG

not attested not anchored not stored refs pending

The Post-impact Evolution of the X-ray Emitting Gas in SNR 1987A Viewed by XMM-Newton

Denys Malyshev, Dmitry Prokhorov, Gerd Puhlhofer, Jacco Vink, Lei Sun, Ping Zhou, Yang Chen

arxiv:2103.03844 v2 · 2021-03-05 · 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{MCOWUCZNXBDWCFSWPFKEH4JYYG}

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.

Cited by

1 paper in Pith

Chandra X-Ray Imaging and Spatially Resolved Spectroscopy of SN 1987A: Energy-Dependent Morphology of the Equatorial Ring

Receipt and verification

First computed	2026-07-05T03:02:47.211378Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

609d6a0b2db847611656795443f138c1a95e953af27ea15aa2a549de7cdf508a

Aliases

arxiv: 2103.03844 · arxiv_version: 2103.03844v2 · doi: 10.48550/arxiv.2103.03844 · pith_short_12: MCOWUCZNXBDW · pith_short_16: MCOWUCZNXBDWCFSW · pith_short_8: MCOWUCZN

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/MCOWUCZNXBDWCFSWPFKEH4JYYG \
  | 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: 609d6a0b2db847611656795443f138c1a95e953af27ea15aa2a549de7cdf508a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a38a26fdcbd099a78e8e9f893c1970924498cbb7f174d4235d539da765f48ebb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-03-05T17:59:30Z",
    "title_canon_sha256": "34ccf6e92548fde24234c1e60d8263cb0ff6f08be773adb676b961fda37fd935"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.03844",
    "kind": "arxiv",
    "version": 2
  }
}