Pith Number

pith:W2SPFOWV

pith:2019:W2SPFOWVVFUHUCIJV5TWBCHE4V

not attested not anchored not stored refs pending

Optical Spectroscopic Observations of Gamma-Ray Blazar Candidates. VII. Follow-up Campaign in the Southern Hemisphere

\'Alvarez Crespo, A. (UniTO), C. C. (NRL), Chavushyan, Cheung, Chomiuk, CONICET-UNLP, D'Abrusco, D. (SAO), E. J. (UniPL, E. (UNAM), F. (UniRoma TRE), F. (UniTO, G. (UniPG), H. A. (INAOE, H. A. (SAO), INAF/IASF Bo), INFN-TO), Jim\'enez-Bail\'on, J. (Michigan State Univ.), La Franca, Landoni, L. (Michigan State Univ.), Marchesini, Masetti, Massaro, M. (Brera Obs.), Milisavljevic, N. (INAF/IASF Bo, N. (UniTO, Paggi, Pe\~na-Herazo, Ricci, R. (SAO), Smith, Strader, Tosti, UniTo, Universidad Andr\'es Bello), V.(INAOE)

arxiv:1903.10014 v1 · 2019-03-24 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W2SPFOWVVFUHUCIJV5TWBCHE4V}

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	2026-05-17T23:50:34.775999Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6a4f2bad5a9687a0909af676088e4e558bbf34aa81110155445cfb4aff6690a

Aliases

arxiv: 1903.10014 · arxiv_version: 1903.10014v1 · doi: 10.48550/arxiv.1903.10014 · pith_short_12: W2SPFOWVVFUH · pith_short_16: W2SPFOWVVFUHUCIJ · pith_short_8: W2SPFOWV

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/W2SPFOWVVFUHUCIJV5TWBCHE4V \
  | 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: b6a4f2bad5a9687a0909af676088e4e558bbf34aa81110155445cfb4aff6690a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2545cd52317a22728b53e1cd3dfe69b0362d5b74b928d64ef50c1a1f7a82af77",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-03-24T16:32:58Z",
    "title_canon_sha256": "96ed5b14c8f791917190bd9e8d08ab665e8535ccab6168b803ab3cec7c22daca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.10014",
    "kind": "arxiv",
    "version": 1
  }
}