Pith Number

pith:NUV6K67T

pith:2018:NUV6K67TDD37RBWQO3SJMTRB4I

not attested not anchored not stored refs pending

A metal-line strength indicator for Damped Lyman Alpha (DLA) systems at low signal-to-noise

Andreu Arinyo-i-Prats, Ignasi Perez-Rafols, Jordi Miralda-Escude, Lluis Mas-Ribas, Pasquier Noterdaeme

arxiv:1801.02605 v1 · 2018-01-08 · astro-ph.GA · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NUV6K67TDD37RBWQO3SJMTRB4I}

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	2026-05-18T00:06:40.820047Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d2be57bf318f7f886d076e4964e21e23c4e78adf6ab282c83d445f719f19f48

Aliases

arxiv: 1801.02605 · arxiv_version: 1801.02605v1 · doi: 10.48550/arxiv.1801.02605 · pith_short_12: NUV6K67TDD37 · pith_short_16: NUV6K67TDD37RBWQ · pith_short_8: NUV6K67T

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/NUV6K67TDD37RBWQO3SJMTRB4I \
  | 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: 6d2be57bf318f7f886d076e4964e21e23c4e78adf6ab282c83d445f719f19f48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "304085034954181da6a89285a0772e558be61d14804511ec2b6bd73b9afe50e5",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-08T18:33:45Z",
    "title_canon_sha256": "07201899e111bcb055fe4de83aa550755761ceabbd923e064c5c063c9362c1a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.02605",
    "kind": "arxiv",
    "version": 1
  }
}