Pith Number

pith:VTDEODSO

pith:2019:VTDEODSOAZ2M7CJTVFCIMA7MSS

not attested not anchored not stored refs pending

Introduction to Optical/IR Interferometry: history and basic principles

Jean Surdej

arxiv:1907.07443 v1 · 2019-07-17 · 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{VTDEODSOAZ2M7CJTVFCIMA7MSS}

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	2026-05-17T23:40:22.245597Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

acc6470e4e0674cf8933a9448603ec9498b78cbeb642c0e8f2322e7532d74829

Aliases

arxiv: 1907.07443 · arxiv_version: 1907.07443v1 · doi: 10.48550/arxiv.1907.07443 · pith_short_12: VTDEODSOAZ2M · pith_short_16: VTDEODSOAZ2M7CJT · pith_short_8: VTDEODSO

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/VTDEODSOAZ2M7CJTVFCIMA7MSS \
  | 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: acc6470e4e0674cf8933a9448603ec9498b78cbeb642c0e8f2322e7532d74829

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d887450aeea1c0320994491c28b32ec46e4ce2393a731bc8085348419979c154",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-07-17T11:27:46Z",
    "title_canon_sha256": "817fbc23bfce35a8946a9e8bf307c4a65c568edcf328228e3e77b3ca669761a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.07443",
    "kind": "arxiv",
    "version": 1
  }
}