Pith Number

pith:D45F4OWH

pith:2017:D45F4OWH5Z32ACYKFQH6RJWS44

not attested not anchored not stored refs pending

SFADI: the Speckle-Free Angular Differential Imaging method

Fernando Pedichini, Gianluca Li Causi, Marco Stangalini, Massimiliano Mattioli, Simone Antoniucci, Vincenzo Testa

arxiv:1709.03181 v1 · 2017-09-10 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D45F4OWH5Z32ACYKFQH6RJWS44}

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	2026-05-18T00:30:41.454619Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f3a5e3ac7ee77a00b0a2c0fe8a6d2e70f46b64e2a6af6c5ac86b12f92f64548

Aliases

arxiv: 1709.03181 · arxiv_version: 1709.03181v1 · doi: 10.48550/arxiv.1709.03181 · pith_short_12: D45F4OWH5Z32 · pith_short_16: D45F4OWH5Z32ACYK · pith_short_8: D45F4OWH

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/D45F4OWH5Z32ACYKFQH6RJWS44 \
  | 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: 1f3a5e3ac7ee77a00b0a2c0fe8a6d2e70f46b64e2a6af6c5ac86b12f92f64548

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45b6dc05ed4f58cf0d2ac4a19bf7765668d0a92b9f0e789dcbfe7f28cb54b4dd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2017-09-10T21:24:37Z",
    "title_canon_sha256": "fd9edc969f968414f82c504edcf65b650e019ae7ca5c2e508fda96d263ea3f07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.03181",
    "kind": "arxiv",
    "version": 1
  }
}