Pith Number

pith:PMMRLOK5

pith:2020:PMMRLOK5NB22Z5KZJTX45YJ2W6

not attested not anchored not stored refs pending

The warm-hot, extended, massive circumgalactic medium of NGC 3221: an XMM-Newton discovery

Anjali Gupta, Sanskriti Das, Smita Mathur

arxiv:2003.13953 v2 · 2020-03-31 · astro-ph.GA · astro-ph.CO · 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{PMMRLOK5NB22Z5KZJTX45YJ2W6}

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	2026-07-05T01:21:36.661791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b1915b95d6875acf5594cefcee13ab7935eb2a23c4e83a022099c4a508d5747

Aliases

arxiv: 2003.13953 · arxiv_version: 2003.13953v2 · doi: 10.48550/arxiv.2003.13953 · pith_short_12: PMMRLOK5NB22 · pith_short_16: PMMRLOK5NB22Z5KZ · pith_short_8: PMMRLOK5

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/PMMRLOK5NB22Z5KZJTX45YJ2W6 \
  | 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: 7b1915b95d6875acf5594cefcee13ab7935eb2a23c4e83a022099c4a508d5747

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9aaa4271ed15ab3de044d614c556d4d22c86cd7d1fb2992a42530e488d57db38",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-03-31T04:54:02Z",
    "title_canon_sha256": "011ef3811300f5c484e6f485c79f0e15df321a1c7fa7c11811350038cf3f9bd6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.13953",
    "kind": "arxiv",
    "version": 2
  }
}