Pith Number

pith:JRBEPOKF

pith:2015:JRBEPOKF65NB3EEWYCV75CYJZY

not attested not anchored not stored refs pending

Keck and VLT Observations of Super-damped Lyman-alpha Absorbers at z=2=2.5: Constraints on Chemical Compositions and Physical Conditions

Celine Peroux, Debopam Som, Donald G. York, Samuel Quiret, Sean Morrison, Varsha P. Kulkarni

arxiv:1510.05342 v2 · 2015-10-19 · 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{JRBEPOKF65NB3EEWYCV75CYJZY}

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	2026-05-18T01:24:51.511649Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c4247b945f75a1d9096c0abfe8b09ce21b51294af79b91bec02efb9d24e7e1b

Aliases

arxiv: 1510.05342 · arxiv_version: 1510.05342v2 · doi: 10.48550/arxiv.1510.05342 · pith_short_12: JRBEPOKF65NB · pith_short_16: JRBEPOKF65NB3EEW · pith_short_8: JRBEPOKF

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/JRBEPOKF65NB3EEWYCV75CYJZY \
  | 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: 4c4247b945f75a1d9096c0abfe8b09ce21b51294af79b91bec02efb9d24e7e1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f1e09f58f3f441dd08d770473d0c25f2237fcfc3e5a2207189a3f7683ae9656",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-10-19T03:13:01Z",
    "title_canon_sha256": "5351350ccaa423823827ec94978abe96b9474a63ab80feefaec9ce366e0342d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.05342",
    "kind": "arxiv",
    "version": 2
  }
}