Pith Number

pith:AL7ZAO2S

pith:2017:AL7ZAO2SOPKROXFSNWZLZVOGJW

not attested not anchored not stored refs pending

Optical-NIR dust extinction towards Galactic O stars

(2) ULS), CSIC-INTA, J. Ma\'iz Apell\'aniz (1), R. H. Barb\'a (2) ((1) CAB

arxiv:1712.09228 v2 · 2017-12-26 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AL7ZAO2SOPKROXFSNWZLZVOGJW}

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	2026-05-18T00:15:58.197809Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

02ff903b5273d5175cb26db2bcd5c64da78c5dde5ca48c553836cf3a693a7c03

Aliases

arxiv: 1712.09228 · arxiv_version: 1712.09228v2 · doi: 10.48550/arxiv.1712.09228 · pith_short_12: AL7ZAO2SOPKR · pith_short_16: AL7ZAO2SOPKROXFS · pith_short_8: AL7ZAO2S

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/AL7ZAO2SOPKROXFSNWZLZVOGJW \
  | 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: 02ff903b5273d5175cb26db2bcd5c64da78c5dde5ca48c553836cf3a693a7c03

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "635c7852d5c181cc00904a69f7bad588ea8abc7a18c68cc220dc6bcc1f76ea5d",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-12-26T10:17:19Z",
    "title_canon_sha256": "6d0e8f418fa46bd750dce473fbf62f11cf4c79490dbab8690c7537853f758c1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.09228",
    "kind": "arxiv",
    "version": 2
  }
}