Pith Number

pith:R6WFFJAH

pith:2014:R6WFFJAHMB6TAPMCVXLWGGWGWE

not attested not anchored not stored refs pending

Observing Shape in Spacetime

Sean Gryb

arxiv:1408.3989 v1 · 2014-08-18 · 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{R6WFFJAHMB6TAPMCVXLWGGWGWE}

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	2026-05-18T00:25:44.699700Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fac52a407607d303d82add7631ac6b13b9d6c08ac986ae64d805f21d1a62711

Aliases

arxiv: 1408.3989 · arxiv_version: 1408.3989v1 · doi: 10.48550/arxiv.1408.3989 · pith_short_12: R6WFFJAHMB6T · pith_short_16: R6WFFJAHMB6TAPMC · pith_short_8: R6WFFJAH

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/R6WFFJAHMB6TAPMCVXLWGGWGWE \
  | 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: 8fac52a407607d303d82add7631ac6b13b9d6c08ac986ae64d805f21d1a62711

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ca266684a38ecd9056aeb5e31875b02d797c998356c8c695148e489f40dca51",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-08-18T12:08:45Z",
    "title_canon_sha256": "7ddf531164e088f04cc3c78b3006baca5d4207ba472c305810809f0b6854dd5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.3989",
    "kind": "arxiv",
    "version": 1
  }
}