Pith Number

pith:ND2MTTS3

pith:2020:ND2MTTS3LVMD3ZZEZ7NSDN2GPX

not attested not anchored not stored refs pending

Constraints on the neutron drip-line with the newly observed 39Na

D.W. Guan, J.C. Pei, Na Fei, Q.Z. Chai

arxiv:2004.04897 v2 · 2020-04-10 · nucl-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ND2MTTS3LVMD3ZZEZ7NSDN2GPX}

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	2026-07-05T01:20:58.299137Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68f4c9ce5b5d583de724cfdb21b7467de3a138717a05145d267a4ec8471e9c48

Aliases

arxiv: 2004.04897 · arxiv_version: 2004.04897v2 · doi: 10.48550/arxiv.2004.04897 · pith_short_12: ND2MTTS3LVMD · pith_short_16: ND2MTTS3LVMD3ZZE · pith_short_8: ND2MTTS3

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/ND2MTTS3LVMD3ZZEZ7NSDN2GPX \
  | 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: 68f4c9ce5b5d583de724cfdb21b7467de3a138717a05145d267a4ec8471e9c48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a211018ae83e5469d9f5f34f177eaaabc39089a675d1fb9e512f24fb763c4057",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nucl-th",
    "submitted_at": "2020-04-10T04:03:37Z",
    "title_canon_sha256": "ba68c8285b0651dc5753a22679213aaee1cd550f5ea1406be5f1158a827a8ce9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.04897",
    "kind": "arxiv",
    "version": 2
  }
}