Pith Number

pith:O37PTL4D

pith:2017:O37PTL4DEAILAUAA3MDCCVWD3V

not attested not anchored not stored refs pending

The chemical enrichment of long-GRB nurseries up to z=2

D. A. Perley, F. Mannucci, G. Tagliaferri, J. Japelj, J. Palmerio, L. K. Hunt, M. Puech, P. D'Avanzo, P. Petitjean, R. Salvaterra, S. Boissier, S. Campana, S. Covino, S. D. Vergani, T. Kr\"uhler

arxiv:1701.02312 v1 · 2017-01-09 · astro-ph.HE · 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{O37PTL4DEAILAUAA3MDCCVWD3V}

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	2026-05-18T00:48:43.625431Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76fef9af832010b05000db062156c3dd7d99ade0378acbf200a29d99b7483b8f

Aliases

arxiv: 1701.02312 · arxiv_version: 1701.02312v1 · doi: 10.48550/arxiv.1701.02312 · pith_short_12: O37PTL4DEAIL · pith_short_16: O37PTL4DEAILAUAA · pith_short_8: O37PTL4D

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/O37PTL4DEAILAUAA3MDCCVWD3V \
  | 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: 76fef9af832010b05000db062156c3dd7d99ade0378acbf200a29d99b7483b8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25551dd4357c9eeb0e736a092b24d7dc321f211f1ea6f14d36108622d3c81673",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2017-01-09T19:00:04Z",
    "title_canon_sha256": "db1cfc2a6efb5780bbfd20200eaa7f1e0962ed35e91ac05b1801606264c3088b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.02312",
    "kind": "arxiv",
    "version": 1
  }
}