Pith Number

pith:3QCYH7EH

pith:2020:3QCYH7EHGESZMXYYF4ZRASTI7S

not attested not anchored not stored refs pending

A bound on the 12C/13C ratio in near-pristine gas with ESPRESSO

Louise Welsh, Max Pettini, Michele Fumagalli, Ryan Cooke

arxiv:2001.04983 v1 · 2020-01-14 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3QCYH7EHGESZMXYYF4ZRASTI7S}

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	2026-07-05T00:51:38.265587Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc0583fc873125965f182f33104a68fc91820332cf6cda8f2f4574969b7491de

Aliases

arxiv: 2001.04983 · arxiv_version: 2001.04983v1 · doi: 10.48550/arxiv.2001.04983 · pith_short_12: 3QCYH7EHGESZ · pith_short_16: 3QCYH7EHGESZMXYY · pith_short_8: 3QCYH7EH

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/3QCYH7EHGESZMXYYF4ZRASTI7S \
  | 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: dc0583fc873125965f182f33104a68fc91820332cf6cda8f2f4574969b7491de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1c79be349c6e4ac96e2a880dcc652943aba4170bccbd6bc0a3b72c916507809",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-01-14T19:00:00Z",
    "title_canon_sha256": "af9bc6dab6ccd6700a6f25d8c39d726d3608e5b04b0461d5decd93b139fc86b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.04983",
    "kind": "arxiv",
    "version": 1
  }
}