Pith Number

pith:F5VI2ZB6

pith:2011:F5VI2ZB6J4KDJWES3ONQYNWG5V

not attested not anchored not stored refs pending

A barium central star binary in the Type-I diamond ring planetary nebula Abell 70

A. Acker, A. F. J. Moffat, B. Miszalski, D. J. Frew, H. M. J. Boffin, J. K\"oppen, Q. A. Parker

arxiv:1108.3957 v1 · 2011-08-19 · 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{F5VI2ZB6J4KDJWES3ONQYNWG5V}

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	2026-05-18T02:00:50.506603Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f6a8d643e4f1434d892db9b0c36c6ed6535391bb1cc823deab1fa242b36d821

Aliases

arxiv: 1108.3957 · arxiv_version: 1108.3957v1 · doi: 10.48550/arxiv.1108.3957 · pith_short_12: F5VI2ZB6J4KD · pith_short_16: F5VI2ZB6J4KDJWES · pith_short_8: F5VI2ZB6

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/F5VI2ZB6J4KDJWES3ONQYNWG5V \
  | 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: 2f6a8d643e4f1434d892db9b0c36c6ed6535391bb1cc823deab1fa242b36d821

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed098de751753f5d3d033b9b973aac3e5cf2757dfe490a85c3d8de8abacc5760",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-08-19T12:33:46Z",
    "title_canon_sha256": "427f75c9494d3e707c3b0588b636d611fdf83df8289309b101f83db1940cd10c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.3957",
    "kind": "arxiv",
    "version": 1
  }
}