Pith Number

pith:YDK2KUIM

pith:2020:YDK2KUIMXOH347SWKESKRUHGAQ

not attested not anchored not stored refs pending

Search for intrinsic NALs in BAL/mini-BAL quasar spectra

Daisuke Itoh, Kentaro Aoki, Takashi Horiuchi, Toru Misawa

arxiv:2009.03818 v1 · 2020-09-08 · 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{YDK2KUIMXOH347SWKESKRUHGAQ}

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	2026-07-05T01:39:06.373964Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0d5a5510cbb8fbe7e565124a8d0e6040780de0f3b774207d76a32171ef73804

Aliases

arxiv: 2009.03818 · arxiv_version: 2009.03818v1 · doi: 10.48550/arxiv.2009.03818 · pith_short_12: YDK2KUIMXOH3 · pith_short_16: YDK2KUIMXOH347SW · pith_short_8: YDK2KUIM

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/YDK2KUIMXOH347SWKESKRUHGAQ \
  | 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: c0d5a5510cbb8fbe7e565124a8d0e6040780de0f3b774207d76a32171ef73804

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1005b81de8a90b99ac1ba4ea40da5b2e4ea3425fcc78dca6c62f9adc489582db",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-09-08T15:23:43Z",
    "title_canon_sha256": "39d15168476191931ed6dd19f2a8cb9230e9c58bcf3d0335719f0efa148e663c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.03818",
    "kind": "arxiv",
    "version": 1
  }
}