Pith Number

pith:NPO4WJNR

pith:2016:NPO4WJNRNMYBUYFFCZU7DVPJXP

not attested not anchored not stored refs pending

Experimental and Computational Study of Isomerically Pure Soluble Aza-phthalocyanines and Azasubphthalocyanines of Varying Number of Aza Units

Elisabeth Seikel, Eugen Sharikow, J\"org Sundermeyer, Klaus Harms, Lukas Trombach, Martin Liebold, Petr Zim\v{c}\'ik, Ralf Tonner, Veronika Nov\'akov\'a

arxiv:1612.01332 v1 · 2016-12-05 · physics.chem-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NPO4WJNRNMYBUYFFCZU7DVPJXP}

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	2026-05-18T00:05:34.622234Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bddcb25b16b301a60a51669f1d5e9bbeca07ee3e4034bdbc4dda8527a42c820

Aliases

arxiv: 1612.01332 · arxiv_version: 1612.01332v1 · doi: 10.48550/arxiv.1612.01332 · pith_short_12: NPO4WJNRNMYB · pith_short_16: NPO4WJNRNMYBUYFF · pith_short_8: NPO4WJNR

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/NPO4WJNRNMYBUYFFCZU7DVPJXP \
  | 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: 6bddcb25b16b301a60a51669f1d5e9bbeca07ee3e4034bdbc4dda8527a42c820

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f49e1060d63562735e232376281cb5c56a08cb4e27de5334549548d5b716fa83",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2016-12-05T12:56:01Z",
    "title_canon_sha256": "ffbb695d03a527b82b82a4abe13d3d3cb588659642226f7586fc42c4aa8f1163"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.01332",
    "kind": "arxiv",
    "version": 1
  }
}