Waltham
type: MusicGroup
genre: album rock
genre: arena rock
genre: melodic hardcore
description: Waltham may refer to: Business Waltham Watch Company, American watch manufacturer, pioneer in the industrialisation of the manufacturing of watch movements The Waltham system, industrial efficiency
popularity: 2
followers: 533
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x76df77eae698e462dde1eb6e2754cbd8fbe1b698e3d7c8c39bb27af5fd0c0b62
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954017
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954017
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/36b6e072-3d89-40e3-b632-2bade333b7c6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/36b6e072-3d89-40e3-b632-2bade333b7c6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/36b6e072-3d89-40e3-b632-2bade333b7c6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T23:38:33Z
additional property: OTSCanonicalRecord
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 0x76df77eae698e462dde1eb6e2754cbd8fbe1b698e3d7c8c39bb27af5fd0c0b62. Chain 2 (Bitcoin): anchored in block 954017 (2026-06-16T23:38:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36b6e072-3d89-40e3-b632-2bade333b7c6.json and https://artists.proofprofile.net/proofs/artist/36b6e072-3d89-40e3-b632-2bade333b7c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T23:38:33Z
album: The First Album
  type: MusicAlbum
  date published: 1955-11-05
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  type: MusicAlbum
  date published: 2006-07-11
album: You're Everything That I Want
  type: MusicAlbum
  date published: 2013-02-14
album: The Highway
  type: MusicAlbum
  date published: 2013-06-24
album: Drive Me Crazy
  type: MusicAlbum
  date published: 2013-07-04
album: Stand and Fight
  type: MusicAlbum
  date published: 2013-11-19