Pith Number

pith:4TS4NTAA

pith:2021:4TS4NTAAVPY7QWHQAMTKHTZEZ4

not attested not anchored not stored refs pending

Photometric observations of NGC 281: Detection of 228 variable stars

A. K. Pandey, J. C. Pandey, Neelam Panwar, Paulomi Paul, Sneh Lata

arxiv:2104.01859 v1 · 2021-04-05 · 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{4TS4NTAAVPY7QWHQAMTKHTZEZ4}

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	2026-07-05T02:33:32.399993Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4e5c6cc00abf1f858f00326a3cf24cf37068daacba7a69dfdcb36f3b8317bab

Aliases

arxiv: 2104.01859 · arxiv_version: 2104.01859v1 · doi: 10.48550/arxiv.2104.01859 · pith_short_12: 4TS4NTAAVPY7 · pith_short_16: 4TS4NTAAVPY7QWHQ · pith_short_8: 4TS4NTAA

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/4TS4NTAAVPY7QWHQAMTKHTZEZ4 \
  | 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: e4e5c6cc00abf1f858f00326a3cf24cf37068daacba7a69dfdcb36f3b8317bab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d7abdb29c4821f05459a015f6678271aa3e9344f49b85bd0737a3bdd034415c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-04-05T11:32:49Z",
    "title_canon_sha256": "a84ebd7609d1331007eb3cbcb4ef7db36e4fe818ec9dbc7a689fac48d0fbb9d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.01859",
    "kind": "arxiv",
    "version": 1
  }
}