Ann M. Martin
type: MusicGroup
description: Ann Matthews Martin (born August 12, 1955) is an American writer of children's and young adult fiction, known best for The Baby-Sitters Club series. Early life Ann Matthews Martin grew up in Princeto
popularity: 6
followers: 40
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x55062417e7c907b66c0d49cc2c51fdd71ea39f51eb5ca050aee3411abca32c8a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/89211b92-d8d4-4bb0-ab11-a9f07beb36b3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/89211b92-d8d4-4bb0-ab11-a9f07beb36b3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/89211b92-d8d4-4bb0-ab11-a9f07beb36b3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x55062417e7c907b66c0d49cc2c51fdd71ea39f51eb5ca050aee3411abca32c8a","name":"Ann M. Martin","registered_at":"2026-06-17T13:27:18Z","symbol":"NIM1409537","token_address":"0xd56cba7dd2e466b31fb1580d7cc1ea9596222066","type":"artist","uuid":"89211b92-d8d4-4bb0-ab11-a9f07beb36b3"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55062417e7c907b66c0d49cc2c51fdd71ea39f51eb5ca050aee3411abca32c8a. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89211b92-d8d4-4bb0-ab11-a9f07beb36b3.json and https://artists.proofprofile.net/proofs/artist/89211b92-d8d4-4bb0-ab11-a9f07beb36b3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x55062417e7c907b66c0d49cc2c51fdd71ea39f51eb5ca050aee3411abca32c8a","name":"Ann M. Martin","registered_at":"2026-06-17T13:27:18Z","symbol":"NIM1409537","token_address":"0xd56cba7dd2e466b31fb1580d7cc1ea9596222066","type":"artist","uuid":"89211b92-d8d4-4bb0-ab11-a9f07beb36b3"}
album: Welcome to Camden Falls [Main Street 1 (Unabridged)]
  type: MusicAlbum
  date published: 2007-06-01
album: Needle and Thread [Main Street 2 (Unabridged)]
  type: MusicAlbum
  date published: 2007-08-01
album: 'Tis the Season [Main Street 3 (Unabridged)]
  type: MusicAlbum
  date published: 2007-11-01
album: Best Friends [Main Street 4 (Unabridged)]
  type: MusicAlbum
  date published: 2008-04-01
album: The Secret Book Club [Main Street 5 (Unabridged)]
  type: MusicAlbum
  date published: 2008-07-01