Pith Number

pith:HUNFHAAC

pith:2016:HUNFHAACWZ3NBAADRO2G2PBIKS

not attested not anchored not stored refs pending

Variations of the Interstellar Extinction Law within the Nearest Kiloparsec

George Gontcharov

arxiv:1606.09450 v1 · 2016-06-30 · astro-ph.SR · 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{HUNFHAACWZ3NBAADRO2G2PBIKS}

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	2026-05-18T01:11:38.207777Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d1a538002b676d080038bb46d3c28548a17ca181647259ac7d9933cc7a1d3ec

Aliases

arxiv: 1606.09450 · arxiv_version: 1606.09450v1 · doi: 10.48550/arxiv.1606.09450 · pith_short_12: HUNFHAACWZ3N · pith_short_16: HUNFHAACWZ3NBAAD · pith_short_8: HUNFHAAC

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/HUNFHAACWZ3NBAADRO2G2PBIKS \
  | 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: 3d1a538002b676d080038bb46d3c28548a17ca181647259ac7d9933cc7a1d3ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa3f6e1ae8f9f9e7ba0aaf161f613cac9ca9a1efab5c2ca829669c935e7d0e31",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-06-30T12:15:36Z",
    "title_canon_sha256": "ce093e8df127c4b1b24cfd3e74f88de8fd510a6f2dbff11adb904a308fe2618e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.09450",
    "kind": "arxiv",
    "version": 1
  }
}