Pith Number

pith:J2NAMR4G

pith:2026:J2NAMR4G2SHPGQDCAHNXLZU24F

not attested not anchored not stored refs pending

Quasinormal Ringdown and Echoes in Accreting Exotic Compact Objects

Chanchal Sharma, Kabir Chakravarti, Sudipta Sarkar

arxiv:2607.18919 v1 · 2026-07-21 · gr-qc · 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{J2NAMR4G2SHPGQDCAHNXLZU24F}

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	2026-07-22T01:23:19.706912Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e9a064786d48ef3406201db75e69ae17fdb9702cb568780d520310dd1ffaf26

Aliases

arxiv: 2607.18919 · arxiv_version: 2607.18919v1 · doi: 10.48550/arxiv.2607.18919 · pith_short_12: J2NAMR4G2SHP · pith_short_16: J2NAMR4G2SHPGQDC · pith_short_8: J2NAMR4G

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/J2NAMR4G2SHPGQDCAHNXLZU24F \
  | 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: 4e9a064786d48ef3406201db75e69ae17fdb9702cb568780d520310dd1ffaf26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c832516e69fb03519e369d1636a4c03ae1dc63ab3e04e015f5dbec0013dcb4d",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2026-07-21T10:03:52Z",
    "title_canon_sha256": "ade984f632a1b5a369da7d78308dd020856e3edd5f24f0dd58b4a8ca2975d4dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.18919",
    "kind": "arxiv",
    "version": 1
  }
}