Pith Number

pith:HAICGZ3E

pith:2011:HAICGZ3EZO3QI4CAD4PZTF7VSX

not attested not anchored not stored refs pending

On a new method to analyse QSO spectra

Pierre Darriulat

arxiv:1109.5621 v1 · 2011-09-26 · 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{HAICGZ3EZO3QI4CAD4PZTF7VSX}

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	2026-05-18T02:25:11.784179Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3810236764cbb70470401f1f9997f595fdb60769f3b6bd7bd295f1e6fa4d5afd

Aliases

arxiv: 1109.5621 · arxiv_version: 1109.5621v1 · doi: 10.48550/arxiv.1109.5621 · pith_short_12: HAICGZ3EZO3Q · pith_short_16: HAICGZ3EZO3QI4CA · pith_short_8: HAICGZ3E

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/HAICGZ3EZO3QI4CAD4PZTF7VSX \
  | 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: 3810236764cbb70470401f1f9997f595fdb60769f3b6bd7bd295f1e6fa4d5afd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9876d344fe7acad6ba49b54b6bfee7bf48fda24430da3fd246268232b34f9e0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-26T15:58:04Z",
    "title_canon_sha256": "4352a6ac374a9a1c3b07d411bb510d292b86b5441c762b757082e0f515d5c4c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.5621",
    "kind": "arxiv",
    "version": 1
  }
}