Pith Number

pith:U3CL2GR6

pith:2019:U3CL2GR6EDJL7M3ED6PBL7HYES

not attested not anchored not stored refs pending

A machine learning approach for identification and classification of symbiotic stars using 2MASS and WISE

Gerardo Ramos-Larios, Lizette Guzman-Ramirez, Marcelo L. Leal-Ferreira, Stavros Akras

arxiv:1901.03016 v1 · 2019-01-10 · 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{U3CL2GR6EDJL7M3ED6PBL7HYES}

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	2026-05-17T23:56:16.165659Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6c4bd1a3e20d2bfb3641f9e15fcf82480ea9925ebd96340926ca1c63190582c

Aliases

arxiv: 1901.03016 · arxiv_version: 1901.03016v1 · doi: 10.48550/arxiv.1901.03016 · pith_short_12: U3CL2GR6EDJL · pith_short_16: U3CL2GR6EDJL7M3E · pith_short_8: U3CL2GR6

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/U3CL2GR6EDJL7M3ED6PBL7HYES \
  | 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: a6c4bd1a3e20d2bfb3641f9e15fcf82480ea9925ebd96340926ca1c63190582c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c88a502627c0dd2bd0e5e6b0a5aed3cf0bd3b8373ba2b30f75a83779965147ea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-01-10T05:02:15Z",
    "title_canon_sha256": "e2e0c2e16f6c8f48ec090dcf621c7d69508b0d64887974874077a358862f1361"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.03016",
    "kind": "arxiv",
    "version": 1
  }
}