Pith Number

pith:4VJ25234

pith:2012:4VJ25234D6RPEVLV4D3AM647DX

not attested not anchored not stored refs pending

Optical photometric and spectral study of the new FU Orionis object V2493 Cyg (HBC 722)

D. P. Dimitrov, D. P. Kjurkchieva, E. de Miguel, E. H. Semkov, M. K. Tsvetkov, R. D. Schwartz, R. Jurdana-Sepic, S. P. Peneva, U. Munari, V. S. Radeva

arxiv:1205.2532 v1 · 2012-05-11 · 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{4VJ25234D6RPEVLV4D3AM647DX}

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	2026-05-18T01:57:33.308142Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e553aeeb7c1fa2f25575e0f6067b9f1df785619748d28dd370ceb0324d67910d

Aliases

arxiv: 1205.2532 · arxiv_version: 1205.2532v1 · doi: 10.48550/arxiv.1205.2532 · pith_short_12: 4VJ25234D6RP · pith_short_16: 4VJ25234D6RPEVLV · pith_short_8: 4VJ25234

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/4VJ25234D6RPEVLV4D3AM647DX \
  | 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: e553aeeb7c1fa2f25575e0f6067b9f1df785619748d28dd370ceb0324d67910d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c4c9680e7577f9abb851e4acd2fc7077c1203d746d85f19141e497da09178e83",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-05-11T14:16:20Z",
    "title_canon_sha256": "32cea237a088f6dfe27f1169dff0aa28020e432e85b424dfd9b41b7ecc597cd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.2532",
    "kind": "arxiv",
    "version": 1
  }
}