James Madison
type: MusicGroup
genre: children's music
description: James Madison (June 28, 1836) was an American statesman, diplomat, and Founding Father who served as the fourth president of the United States from 1809 to 1817. Madison was popularly acclaimed as the
popularity: 21
followers: 35
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd72139b476d94398a76c3cde3e8cd24d84c0e45107f2c2faf544ac724fcc9364
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/769f1bc7-e492-4cdf-9fb6-333218729f11.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/769f1bc7-e492-4cdf-9fb6-333218729f11.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/769f1bc7-e492-4cdf-9fb6-333218729f11
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd72139b476d94398a76c3cde3e8cd24d84c0e45107f2c2faf544ac724fcc9364","name":"James Madison","registered_at":"2026-06-12T01:13:41Z","symbol":"NIM0153252","token_address":"0x1346c4123eaeffa57f9f3deb5bd2bad81d50f3d9","type":"artist","uuid":"769f1bc7-e492-4cdf-9fb6-333218729f11"}
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 0xd72139b476d94398a76c3cde3e8cd24d84c0e45107f2c2faf544ac724fcc9364. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/769f1bc7-e492-4cdf-9fb6-333218729f11.json and https://artists.proofprofile.net/proofs/artist/769f1bc7-e492-4cdf-9fb6-333218729f11.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xd72139b476d94398a76c3cde3e8cd24d84c0e45107f2c2faf544ac724fcc9364","name":"James Madison","registered_at":"2026-06-12T01:13:41Z","symbol":"NIM0153252","token_address":"0x1346c4123eaeffa57f9f3deb5bd2bad81d50f3d9","type":"artist","uuid":"769f1bc7-e492-4cdf-9fb6-333218729f11"}
album: Behind Blues
  type: MusicAlbum
  date published: 2023-05-29