Pith Number

pith:427W4WFI

pith:2017:427W4WFIIUZ54LTLCEPUGDJ7ZX

not attested not anchored not stored refs pending

Proximity Operators for Phase Retrieval

Andr\'e Ferrari, Antony Schutz, \'Eric Thi\'ebaut, Ferr\'eol Soulez, Fr\'ed\'eric Courbin, Michael Unser

arxiv:1710.10046 v1 · 2017-10-27 · astro-ph.IM

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

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	2026-05-18T00:31:54.880933Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6bf6e58a84533de2e6b111f430d3fcdd7de00c456670ae4b6854a29072b2357

Aliases

arxiv: 1710.10046 · arxiv_version: 1710.10046v1 · doi: 10.48550/arxiv.1710.10046 · pith_short_12: 427W4WFIIUZ5 · pith_short_16: 427W4WFIIUZ54LTL · pith_short_8: 427W4WFI

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/427W4WFIIUZ54LTLCEPUGDJ7ZX \
  | 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: e6bf6e58a84533de2e6b111f430d3fcdd7de00c456670ae4b6854a29072b2357

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7cdef68de421b6e7ff820bdc17f238dbff4f8bf7f3ba013143b936b0123ece6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2017-10-27T09:44:48Z",
    "title_canon_sha256": "c9678f045269adfc97530dbc547286358e3d09421d7dd431729739587975bd2d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.10046",
    "kind": "arxiv",
    "version": 1
  }
}