Pith Number

pith:ZJ6TA3IN

pith:2016:ZJ6TA3INETASDOFOMVXN42QD4P

not attested not anchored not stored refs pending

Butterfly Diagram and Carrington Maps for Century-Long Ca II K Spectroheliograms from Kodaikanal Observatory

B. Ravindra, Dipankar Banerjee, Subhamoy Chatterjee

arxiv:1605.08219 v1 · 2016-05-26 · 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{ZJ6TA3INETASDOFOMVXN42QD4P}

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	2026-05-18T01:08:40.939043Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca7d306d0d24c121b8ae656ede6a03e3d7a6b87f7dc0b4d054c1fceab3e9a868

Aliases

arxiv: 1605.08219 · arxiv_version: 1605.08219v1 · doi: 10.48550/arxiv.1605.08219 · pith_short_12: ZJ6TA3INETAS · pith_short_16: ZJ6TA3INETASDOFO · pith_short_8: ZJ6TA3IN

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/ZJ6TA3INETASDOFOMVXN42QD4P \
  | 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: ca7d306d0d24c121b8ae656ede6a03e3d7a6b87f7dc0b4d054c1fceab3e9a868

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16982f6f95e7a9d85dd588c6fa0842e2860d64fed5a755391b2278740410a1d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-05-26T10:17:19Z",
    "title_canon_sha256": "d70ab2ccbf293ccb7f6e8512991a4ee43d19eac425bf4c450f5553e2407d4316"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.08219",
    "kind": "arxiv",
    "version": 1
  }
}