Pith Number

pith:H3KEEWWM

pith:2009:H3KEEWWMFXSEIFUTCLPYYTZH4M

not attested not anchored not stored refs pending

Fermionic entanglement that survives a black hole

E. Martin-Martinez, J. Leon

arxiv:0907.1960 v4 · 2009-07-11 · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H3KEEWWMFXSEIFUTCLPYYTZH4M}

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	2026-07-04T15:57:03.395402Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ed4425acc2de444169312df8c4f27e302077292e4c122c18ed2c730c281ee19

Aliases

arxiv: 0907.1960 · arxiv_version: 0907.1960v4 · doi: 10.48550/arxiv.0907.1960 · pith_short_12: H3KEEWWMFXSE · pith_short_16: H3KEEWWMFXSEIFUT · pith_short_8: H3KEEWWM

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/H3KEEWWMFXSEIFUTCLPYYTZH4M \
  | 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: 3ed4425acc2de444169312df8c4f27e302077292e4c122c18ed2c730c281ee19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3e4220b76ba9bc8d3b51a0978f2ec57b1f54bc4904214705eb9e4d856e5d7ac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-07-11T12:22:41Z",
    "title_canon_sha256": "f2e97ca9f8ffea8360850066eae7ba303c57900eb4b7c284682db531fe9661f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.1960",
    "kind": "arxiv",
    "version": 4
  }
}