Pith Number

pith:J56CFTA5

pith:2008:J56CFTA5VIWIF7BG4L5IRJVJLI

not attested not anchored not stored refs pending

Phantom dark energy with tachyonic instability: metric perturbations

S. Sergienko, V. Rubakov

arxiv:0803.3163 v1 · 2008-03-21 · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J56CFTA5VIWIF7BG4L5IRJVJLI}

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	2026-05-18T02:15:59.995185Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f7c22cc1daa2c82fc26e2fa88a6a95a395907a0118eccfcf78aa657c536d7ac

Aliases

arxiv: 0803.3163 · arxiv_version: 0803.3163v1 · doi: 10.48550/arxiv.0803.3163 · pith_short_12: J56CFTA5VIWI · pith_short_16: J56CFTA5VIWIF7BG · pith_short_8: J56CFTA5

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/J56CFTA5VIWIF7BG4L5IRJVJLI \
  | 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: 4f7c22cc1daa2c82fc26e2fa88a6a95a395907a0118eccfcf78aa657c536d7ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c436e6dffcecc7cd3d1cd51688351533878d66e6c577ac6e30031304d225e31",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2008-03-21T13:27:33Z",
    "title_canon_sha256": "e01c498b343e9dc5d101145be00fcec75840265e842013f1b57540ec0e217f4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0803.3163",
    "kind": "arxiv",
    "version": 1
  }
}