Pith Number

pith:2AIZHMYB

pith:2019:2AIZHMYBFOKYLZUCKMAJGSGI6B

not attested not anchored not stored refs pending

An Information Theory Approach on Deciding Spectroscopic Follow Ups

Javiera Astudillo, Karim Pichara, Pablo Huijse, Pavlos Protopapas

arxiv:1911.02444 v1 · 2019-11-06 · astro-ph.IM · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2AIZHMYBFOKYLZUCKMAJGSGI6B}

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	2026-07-05T00:31:30.430582Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d01193b3012b9585e68253009348c8f0789adc9b007c0b7a79f53f1aa2ebf36f

Aliases

arxiv: 1911.02444 · arxiv_version: 1911.02444v1 · doi: 10.48550/arxiv.1911.02444 · pith_short_12: 2AIZHMYBFOKY · pith_short_16: 2AIZHMYBFOKYLZUC · pith_short_8: 2AIZHMYB

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/2AIZHMYBFOKYLZUCKMAJGSGI6B \
  | 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: d01193b3012b9585e68253009348c8f0789adc9b007c0b7a79f53f1aa2ebf36f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12166f60efd9a2db8068d96aba97e17104a3dfc1272982de881c68b81a536f1d",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-11-06T15:43:17Z",
    "title_canon_sha256": "c9a95ebc603de87523db0d36a4e6e9f9202ef33756b5bf09a1f66a1fe861a6a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.02444",
    "kind": "arxiv",
    "version": 1
  }
}