Pith Number

pith:E5PN5H4L

pith:2010:E5PN5H4LXJPF6T5OKB2M7EP6V6

not attested not anchored not stored refs pending

The half-life of $^{221}$Fr in Si and Au at 4K and at mK temperatures

B. Verstichel, D. Z'akouck'y, E. Traykov, F. Wauters, G. Soti, I. Kraev, M. Breitenfeldt, M. Tandecki, N. Severijns, S. Roccia, S. Van Gorp, V. De Leebeeck, V. Yu. Kozlov

arxiv:1010.6250 v1 · 2010-10-29 · nucl-ex

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E5PN5H4LXJPF6T5OKB2M7EP6V6}

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	2026-05-18T04:30:36.163037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

275ede9f8bba5e5f4fae5074cf91feaf809e2cbc63b3c65bbaae020a5cae78cd

Aliases

arxiv: 1010.6250 · arxiv_version: 1010.6250v1 · doi: 10.48550/arxiv.1010.6250 · pith_short_12: E5PN5H4LXJPF · pith_short_16: E5PN5H4LXJPF6T5O · pith_short_8: E5PN5H4L

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/E5PN5H4LXJPF6T5OKB2M7EP6V6 \
  | 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: 275ede9f8bba5e5f4fae5074cf91feaf809e2cbc63b3c65bbaae020a5cae78cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6fd08d2905fb5445bcc69da91f447674b31469b8e2b663902ea783480993b3c6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nucl-ex",
    "submitted_at": "2010-10-29T15:30:23Z",
    "title_canon_sha256": "4712658d4fcb5080c698cf82c7f24c37d47762dde93abd7f7498c64095c31c5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.6250",
    "kind": "arxiv",
    "version": 1
  }
}