Pith Number

pith:5FFPEIQZ

pith:2006:5FFPEIQZEEGBC27XUSH7WC4FLF

not attested not anchored not stored refs pending

Analogue spacetime based on 2-component Bose-Einstein condensates

Matt Visser, Silke Weinfurtner, Stefano Liberati

arxiv:gr-qc/0605121 v1 · 2006-05-22 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5FFPEIQZEEGBC27XUSH7WC4FLF}

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	2026-07-04T15:17:00.794190Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e94af22219210c116bf7a48ffb0b85596622cb7e5074fab350a45f0cde1f7e3f

Aliases

arxiv: gr-qc/0605121 · arxiv_version: gr-qc/0605121v1 · doi: 10.48550/arxiv.gr-qc/0605121 · pith_short_12: 5FFPEIQZEEGB · pith_short_16: 5FFPEIQZEEGBC27X · pith_short_8: 5FFPEIQZ

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/5FFPEIQZEEGBC27XUSH7WC4FLF \
  | 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: e94af22219210c116bf7a48ffb0b85596622cb7e5074fab350a45f0cde1f7e3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69d9432351e92fac8c1cb6eadff0195bfa248eac10dd8cd5845cef04e1346f58",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2006-05-22T11:28:16Z",
    "title_canon_sha256": "d497cdda3cf65da8a0597d0c40dfeaf1b69d067f7f33d3af49fdd04584e33e5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0605121",
    "kind": "arxiv",
    "version": 1
  }
}