40 Sons
type: MusicGroup
popularity: 2
followers: 405
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcb2ae0a2c549fcaaac65c9df2695d6e64167d0fc0de675142371de801ae95fc3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9828122a-d26b-42a4-bd87-b0e1c831e6a0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9828122a-d26b-42a4-bd87-b0e1c831e6a0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9828122a-d26b-42a4-bd87-b0e1c831e6a0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcb2ae0a2c549fcaaac65c9df2695d6e64167d0fc0de675142371de801ae95fc3","name":"40 Sons","registered_at":"2026-06-17T18:43:17Z","symbol":"NIM1484975","token_address":"0x0df7416b1f1509372817d4f7e4f0ac856ab365c8","type":"artist","uuid":"9828122a-d26b-42a4-bd87-b0e1c831e6a0"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2ae0a2c549fcaaac65c9df2695d6e64167d0fc0de675142371de801ae95fc3. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9828122a-d26b-42a4-bd87-b0e1c831e6a0.json and https://artists.proofprofile.net/proofs/artist/9828122a-d26b-42a4-bd87-b0e1c831e6a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0xcb2ae0a2c549fcaaac65c9df2695d6e64167d0fc0de675142371de801ae95fc3","name":"40 Sons","registered_at":"2026-06-17T18:43:17Z","symbol":"NIM1484975","token_address":"0x0df7416b1f1509372817d4f7e4f0ac856ab365c8","type":"artist","uuid":"9828122a-d26b-42a4-bd87-b0e1c831e6a0"}
album: Madness
  type: MusicAlbum
  date published: 2010-02-12
album: One Way Ticket
  type: MusicAlbum
  date published: 2011-10-14
album: Run Baby Run
  type: MusicAlbum
  date published: 2012-03-22
album: Hurricane
  type: MusicAlbum
  date published: 2012-09-20
album: 40 Sons
  type: MusicAlbum
  date published: 2013-02-12
album: 40 Sons
  type: MusicAlbum
  date published: 2025-04-04