Pith Number

pith:FBABA65I

pith:2017:FBABA65IIWJ5ZZ6FRCY3TFE4LP

not attested not anchored not stored refs pending

Metal enrichment signatures of the first stars on high-z DLAs

B. Ciardi, Q. Ma, R. Salvaterra, U. Maio

arxiv:1707.07580 v1 · 2017-07-24 · 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{FBABA65IIWJ5ZZ6FRCY3TFE4LP}

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	2026-05-18T00:31:12.177758Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2840107ba84593dce7c588b1b9949c5bddae69b59b88ee478e36327b7d43251a

Aliases

arxiv: 1707.07580 · arxiv_version: 1707.07580v1 · doi: 10.48550/arxiv.1707.07580 · pith_short_12: FBABA65IIWJ5 · pith_short_16: FBABA65IIWJ5ZZ6F · pith_short_8: FBABA65I

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/FBABA65IIWJ5ZZ6FRCY3TFE4LP \
  | 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: 2840107ba84593dce7c588b1b9949c5bddae69b59b88ee478e36327b7d43251a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "537fdeeafbd4b837a414296b1e68a25669d4fe89257d3954db0e640c36e162e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-07-24T14:38:48Z",
    "title_canon_sha256": "39ad47fed6670f82bffd16ab93da458d4f9f77077fd4242f57d17aa5872c4cdf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.07580",
    "kind": "arxiv",
    "version": 1
  }
}