Pith Number

pith:C2I6TAF7

pith:2005:C2I6TAF7AGIASUE7OPHDKH7OJG

not attested not anchored not stored refs pending

Cosmological tachyon from cubic string field theory

Gianluca Calcagni

arxiv:hep-th/0512259 v4 · 2005-12-20 · hep-th · astro-ph · 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{C2I6TAF7AGIASUE7OPHDKH7OJG}

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	2026-07-04T16:56:26.330482Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1691e980bf019009509f73ce351fee498a38100c57fab94a1d163d58a82ef956

Aliases

arxiv: hep-th/0512259 · arxiv_version: hep-th/0512259v4 · doi: 10.48550/arxiv.hep-th/0512259 · pith_short_12: C2I6TAF7AGIA · pith_short_16: C2I6TAF7AGIASUE7 · pith_short_8: C2I6TAF7

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/C2I6TAF7AGIASUE7OPHDKH7OJG \
  | 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: 1691e980bf019009509f73ce351fee498a38100c57fab94a1d163d58a82ef956

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fdc0253f2771946e6b6cbc1cf427724be2da9786edfe2bfe88b8edff60c83fbf",
    "cross_cats_sorted": [
      "astro-ph",
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "2005-12-20T20:40:43Z",
    "title_canon_sha256": "26bfd4ff6de07db65d38b2f21fa99035ebcf1fc9bc7c2a53a4badd86716f1a5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/0512259",
    "kind": "arxiv",
    "version": 4
  }
}