Pith Number

pith:D7KMRLM4

pith:2011:D7KMRLM4QDATZR6FADQGI26Q2N

not attested not anchored not stored refs pending

Optical and Mid-Infrared Observations of the Planetary Nebula NGC 6781

Gerardo Ramos-Larios, J. P. Phillips, Martin A. Guerrero

arxiv:1106.3706 v1 · 2011-06-19 · 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{D7KMRLM4QDATZR6FADQGI26Q2N}

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	2026-05-18T04:19:42.341072Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1fd4c8ad9c80c13cc7c500e0646bd0d37643441150c3a2b106c35f6c795ff733

Aliases

arxiv: 1106.3706 · arxiv_version: 1106.3706v1 · doi: 10.48550/arxiv.1106.3706 · pith_short_12: D7KMRLM4QDAT · pith_short_16: D7KMRLM4QDATZR6F · pith_short_8: D7KMRLM4

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/D7KMRLM4QDATZR6FADQGI26Q2N \
  | 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: 1fd4c8ad9c80c13cc7c500e0646bd0d37643441150c3a2b106c35f6c795ff733

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70723aa30d1ed4201273e5a1890b31b47db4539e8cc7af361f17d0a98f3ba071",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-06-19T04:36:55Z",
    "title_canon_sha256": "d4908e19272af48dd4a60aead2fd8a3b88629f9e902207721c33a0ce0ff997ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.3706",
    "kind": "arxiv",
    "version": 1
  }
}