Pith Number

pith:SHN3QCKN

pith:2019:SHN3QCKNY72LYIQTA5M4EO7UM3

not attested not anchored not stored refs pending

Machine Learning Regression of extinction in the second $Gaia$ Data Release

Jifeng Liu, Song Wang, Yilun Wang, Yu Bai

arxiv:1912.09269 v1 · 2019-12-18 · astro-ph.SR · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SHN3QCKNY72LYIQTA5M4EO7UM3}

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	2026-07-05T00:41:53.110942Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91dbb8094dc7f4bc22130759c23bf466f0bc07cbd6ec70214053c7751a1bbb32

Aliases

arxiv: 1912.09269 · arxiv_version: 1912.09269v1 · doi: 10.48550/arxiv.1912.09269 · pith_short_12: SHN3QCKNY72L · pith_short_16: SHN3QCKNY72LYIQT · pith_short_8: SHN3QCKN

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/SHN3QCKNY72LYIQTA5M4EO7UM3 \
  | 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: 91dbb8094dc7f4bc22130759c23bf466f0bc07cbd6ec70214053c7751a1bbb32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf2854e6f312dd9760a73413253bbb933c9ca911d2ade05a3c86e30752f9b1b4",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-12-18T02:11:12Z",
    "title_canon_sha256": "62ba215bd808369cb0066b6a4a2d502eadc1634345a0d4fb611f3404cec967b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.09269",
    "kind": "arxiv",
    "version": 1
  }
}