Pith Number

pith:4TB4C5K5

pith:2017:4TB4C5K5FGZNYBUHREN7YAPI6M

not attested not anchored not stored refs pending

Producing the Deuteron in Stars: Anthropic Limits on Fundamental Constants

Geraint F. Lewis, Luke A. Barnes

arxiv:1703.07161 v2 · 2017-03-21 · astro-ph.CO · 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{4TB4C5K5FGZNYBUHREN7YAPI6M}

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	2026-05-18T00:39:36.349277Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4c3c1755d29b2dc0687891bfc01e8f33c3a6e0871b2a874cc462eddb92e2e0f

Aliases

arxiv: 1703.07161 · arxiv_version: 1703.07161v2 · doi: 10.48550/arxiv.1703.07161 · pith_short_12: 4TB4C5K5FGZN · pith_short_16: 4TB4C5K5FGZNYBUH · pith_short_8: 4TB4C5K5

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/4TB4C5K5FGZNYBUHREN7YAPI6M \
  | 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: e4c3c1755d29b2dc0687891bfc01e8f33c3a6e0871b2a874cc462eddb92e2e0f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c326a787b6205b24af19ebcb68bab79c2c84a154a1ba87b614417a2e479511a",
    "cross_cats_sorted": [
      "nucl-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2017-03-21T11:47:42Z",
    "title_canon_sha256": "10fce0b71555aa1532b3297d38e371d5d1b0e83ff2f16ee3f996d09353935f56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.07161",
    "kind": "arxiv",
    "version": 2
  }
}