Pith Number

pith:OS33HPYQ

pith:2010:OS33HPYQ3UMBU63RSWW7C6E3TE

not attested not anchored not stored refs pending

Searching for Dust Reddening in SDSS Spectra with Damped Lyman $\alpha${} Systems

C. P\'eroux, S. Frank

arxiv:1004.3298 v1 · 2010-04-19 · 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{OS33HPYQ3UMBU63RSWW7C6E3TE}

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	2026-05-18T02:07:56.606131Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74b7b3bf10dd181a7b7195adf1789b99074b7890e9a4c57a0b25ed86b9a103b2

Aliases

arxiv: 1004.3298 · arxiv_version: 1004.3298v1 · doi: 10.48550/arxiv.1004.3298 · pith_short_12: OS33HPYQ3UMB · pith_short_16: OS33HPYQ3UMBU63R · pith_short_8: OS33HPYQ

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/OS33HPYQ3UMBU63RSWW7C6E3TE \
  | 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: 74b7b3bf10dd181a7b7195adf1789b99074b7890e9a4c57a0b25ed86b9a103b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1d72317cb3cc7b14faa4ece96653016b05423557cf8b5cdc2dbbb2867650de7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-04-19T20:19:10Z",
    "title_canon_sha256": "ecae42b7ed6f9f2836130299796ff055b837728fb3c05dd70f7972ac7cf93afc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.3298",
    "kind": "arxiv",
    "version": 1
  }
}