Pith Number

pith:HK37RX2A

pith:2015:HK37RX2AWNWZGZSVUS5B7BT6V7

not attested not anchored not stored refs pending

Balmer line shifts in quasars

A. Del Olmo, J. W. Sulentic, P. Marziani, S. Zamfir

arxiv:1512.06224 v1 · 2015-12-19 · 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{HK37RX2AWNWZGZSVUS5B7BT6V7}

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	2026-05-18T01:21:25.746739Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ab7f8df40b36d936655a4ba1f867eafebaf6f433414d09fa7a1086d6d28a6ed

Aliases

arxiv: 1512.06224 · arxiv_version: 1512.06224v1 · doi: 10.48550/arxiv.1512.06224 · pith_short_12: HK37RX2AWNWZ · pith_short_16: HK37RX2AWNWZGZSV · pith_short_8: HK37RX2A

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/HK37RX2AWNWZGZSVUS5B7BT6V7 \
  | 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: 3ab7f8df40b36d936655a4ba1f867eafebaf6f433414d09fa7a1086d6d28a6ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d73ec2783c0b15a672aab24f3e0a9e98d53f740337019e48de89eb0d377de73",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-12-19T10:56:56Z",
    "title_canon_sha256": "15045e18f0246be2ffb7d58898c0994ae71997ab4cd0edf4f823bc8c5f20dc49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.06224",
    "kind": "arxiv",
    "version": 1
  }
}