Pith Number

pith:KNCO3MYK

pith:2019:KNCO3MYKQXVTHDUQ7CKRDX6ZD7

not attested not anchored not stored refs pending

A Long-term photometric variability and spectroscopic study of luminous blue variable AF And in M31

Anjasha Gangopadhyay (ARIES), Kaushal Sharma (IUCAA), Kuntal Misra (ARIES), Rishikesh Gokhale (SBU), Yogesh C. Joshi (ARIES)

arxiv:1908.01893 v1 · 2019-08-05 · 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{KNCO3MYKQXVTHDUQ7CKRDX6ZD7}

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	2026-07-05T00:12:04.216166Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5344edb30a85eb338e90f89511dfd91feb2661f87c3437401d4e858810320377

Aliases

arxiv: 1908.01893 · arxiv_version: 1908.01893v1 · doi: 10.48550/arxiv.1908.01893 · pith_short_12: KNCO3MYKQXVT · pith_short_16: KNCO3MYKQXVTHDUQ · pith_short_8: KNCO3MYK

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/KNCO3MYKQXVTHDUQ7CKRDX6ZD7 \
  | 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: 5344edb30a85eb338e90f89511dfd91feb2661f87c3437401d4e858810320377

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b61374f53247bcbff88b9d6daf40de2e444d94cebe86ccff5c28ce0609f38150",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-08-05T22:50:37Z",
    "title_canon_sha256": "ec2591081d64a39fd11b9dad59292100b432d4a8a34589fe858b65cf718a089f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.01893",
    "kind": "arxiv",
    "version": 1
  }
}