Pith Number

pith:B67DOY2D

pith:2012:B67DOY2DK624B4QIC7PSVYHZJG

not attested not anchored not stored refs pending

The extinction law from photometric data: linear regression methods

Charles J. Lada, Joana Ascenso, Jo\~ao Alves, Marco Lombardi

arxiv:1203.5257 v1 · 2012-03-23 · 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{B67DOY2DK624B4QIC7PSVYHZJG}

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	2026-05-18T01:58:03.991994Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fbe37634357b5c0f20817df2ae0f949871c0c4daec2531b39e23a848b6e94cf

Aliases

arxiv: 1203.5257 · arxiv_version: 1203.5257v1 · doi: 10.48550/arxiv.1203.5257 · pith_short_12: B67DOY2DK624 · pith_short_16: B67DOY2DK624B4QI · pith_short_8: B67DOY2D

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/B67DOY2DK624B4QIC7PSVYHZJG \
  | 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: 0fbe37634357b5c0f20817df2ae0f949871c0c4daec2531b39e23a848b6e94cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d435780cd23007fbfa994ed00c1b77cd6133417a8e45107f46a0ae9bccc59b1e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-03-23T14:36:42Z",
    "title_canon_sha256": "dd74718672a7d986693144f658f713e749829544385e1c4291fb931b494b02a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.5257",
    "kind": "arxiv",
    "version": 1
  }
}