Pith Number

pith:UNM7TM54

pith:2014:UNM7TM544XV6AX7KKQBW4OIEDD

not attested not anchored not stored refs pending

The most metal-poor damped Lyman alpha systems: An insight into dwarf galaxies at high redshift

((1) University of California, (2) Institute of Astronomy, (3) Willamette University), Max Pettini (2), Regina A. Jorgenson (3), Ryan Cooke (1), Santa Cruz, University of Cambridge

arxiv:1406.7003 v2 · 2014-06-26 · 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{UNM7TM544XV6AX7KKQBW4OIEDD}

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	2026-05-18T01:36:01.966410Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a359f9b3bce5ebe05fea54036e390418f6d97f7a49e651e06d1a162dd7473921

Aliases

arxiv: 1406.7003 · arxiv_version: 1406.7003v2 · doi: 10.48550/arxiv.1406.7003 · pith_short_12: UNM7TM544XV6 · pith_short_16: UNM7TM544XV6AX7K · pith_short_8: UNM7TM54

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/UNM7TM544XV6AX7KKQBW4OIEDD \
  | 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: a359f9b3bce5ebe05fea54036e390418f6d97f7a49e651e06d1a162dd7473921

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80e3207966dd23f63f42f3d4a535943f1a34234c8cd8607a4d385140820a5105",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-06-26T20:00:00Z",
    "title_canon_sha256": "bb3abee219f30396b75ce260339862cb42f3db3f83c57d008c30ec8fc98aadce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.7003",
    "kind": "arxiv",
    "version": 2
  }
}