Pith Number

pith:UPN2IFFW

pith:2014:UPN2IFFWW54RLVSV3K35ZD4VSP

not attested not anchored not stored refs pending

Quantum fields in curved space-time, semiclassical gravity, quantum gravity phenomenology, and analogue models: Report on session D4 at GR20

Christopher J Fewster, Stefano Liberati

arxiv:1402.3544 v1 · 2014-02-14 · gr-qc · hep-th · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UPN2IFFWW54RLVSV3K35ZD4VSP}

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	2026-05-18T01:07:54.295871Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3dba414b6b77915d655dab7dc8f9593e0428e14fcbeddd05e73d8b308752d68

Aliases

arxiv: 1402.3544 · arxiv_version: 1402.3544v1 · doi: 10.48550/arxiv.1402.3544 · pith_short_12: UPN2IFFWW54R · pith_short_16: UPN2IFFWW54RLVSV · pith_short_8: UPN2IFFW

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/UPN2IFFWW54RLVSV3K35ZD4VSP \
  | 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: a3dba414b6b77915d655dab7dc8f9593e0428e14fcbeddd05e73d8b308752d68

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35e3a860f9cf98e89037cbcb86727097ef61098145e914ab5d6d6a35efb8decb",
    "cross_cats_sorted": [
      "hep-th",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-02-14T18:27:35Z",
    "title_canon_sha256": "fe69cf5776a8e71c337f1d69ebe67d2e0255beea7ac040aa76b5b31b950551b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.3544",
    "kind": "arxiv",
    "version": 1
  }
}