Pith Number

pith:FEDV6TDY

pith:2026:FEDV6TDYTVXCEZ44UC4UZ6N4MM

not attested not anchored not stored refs pending

Optical Spectroscopy and Temporal Evolution of the Nova V1405 Cas

Elias Aydi, Gesesew R. Habtie, Pavol A. Dubovsky, Ramkrishna Das

arxiv:2607.19138 v1 · 2026-07-21 · 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{FEDV6TDYTVXCEZ44UC4UZ6N4MM}

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	2026-07-22T01:24:10.517076Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29075f4c789d6e22679ca0b94cf9bc6313522896c51c714e26e5911a90162ce5

Aliases

arxiv: 2607.19138 · arxiv_version: 2607.19138v1 · doi: 10.48550/arxiv.2607.19138 · pith_short_12: FEDV6TDYTVXC · pith_short_16: FEDV6TDYTVXCEZ44 · pith_short_8: FEDV6TDY

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/FEDV6TDYTVXCEZ44UC4UZ6N4MM \
  | 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: 29075f4c789d6e22679ca0b94cf9bc6313522896c51c714e26e5911a90162ce5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f22b44c7867838c130a1434882fcfb5fb6617866ff5409b8b98d6def66aee9e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-07-21T14:27:53Z",
    "title_canon_sha256": "0ac79c163386ed87b3b7d4b4149b1d37f745c0481b0525125e040fc0dadd73c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.19138",
    "kind": "arxiv",
    "version": 1
  }
}