Pith Number

pith:S4H3R63C

pith:2021:S4H3R63CMRPYFSFXQF6NKTLMT2

not attested not anchored not stored refs pending

The impact of the FMR and starburst galaxies on the (low-metallicity) cosmic star formation history

Andrea Lapi, Gijs Nelemans, Lumen Boco, Martyna Chruslinska

arxiv:2109.06187 v1 · 2021-09-13 · 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{S4H3R63CMRPYFSFXQF6NKTLMT2}

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	2026-07-05T03:19:21.979369Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

970fb8fb62645f82c8b7817cd54d6c9eb37312da0c7507fd7645ab645767d5de

Aliases

arxiv: 2109.06187 · arxiv_version: 2109.06187v1 · doi: 10.48550/arxiv.2109.06187 · pith_short_12: S4H3R63CMRPY · pith_short_16: S4H3R63CMRPYFSFX · pith_short_8: S4H3R63C

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/S4H3R63CMRPYFSFXQF6NKTLMT2 \
  | 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: 970fb8fb62645f82c8b7817cd54d6c9eb37312da0c7507fd7645ab645767d5de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0deb4d2034baa41616516283466cab68597d054aa36377e45dc28cff5a7e844e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-09-13T18:00:01Z",
    "title_canon_sha256": "35f7b3507fe8705d273051d473e1e896b7ca7a718e330f24678766657804346c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.06187",
    "kind": "arxiv",
    "version": 1
  }
}