Pith Number

pith:FBG4BASS

pith:2023:FBG4BASSQPKOQKANAB5KKRHZKS

not attested not anchored not stored refs pending

Towards ultra metal-poor DLAs: linking the chemistry of the most metal-poor DLA to the first stars

Louise Welsh, Max Pettini, Michele Fumagalli, Ryan Cooke

arxiv:2307.03771 v1 · 2023-07-07 · 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{FBG4BASSQPKOQKANAB5KKRHZKS}

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	2026-07-05T06:34:38.834770Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

284dc0825283d4e8280d007aa544f954b98f0e88219c5b462aaef56a64796010

Aliases

arxiv: 2307.03771 · arxiv_version: 2307.03771v1 · doi: 10.48550/arxiv.2307.03771 · pith_short_12: FBG4BASSQPKO · pith_short_16: FBG4BASSQPKOQKAN · pith_short_8: FBG4BASS

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/FBG4BASSQPKOQKANAB5KKRHZKS \
  | 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: 284dc0825283d4e8280d007aa544f954b98f0e88219c5b462aaef56a64796010

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92a7bf681ac65a18e8f06007bec75265a01f283cc74200ae8f07159c5c773d2d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2023-07-07T18:00:02Z",
    "title_canon_sha256": "a6a0228d725ec1263d6293599d738c36f5700e2e1d30b2e744291cb663e855ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2307.03771",
    "kind": "arxiv",
    "version": 1
  }
}