Mama Yancey
type: MusicGroup
genre: blues
genre: boogie-woogie
popularity: 7
followers: 210
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xff3f0c5a3dad5288545e3520ebda3d8835fbe2969ca2624719a3bbf0b536e26e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c74198d6-cc1c-403a-9a56-be369bb0d289.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c74198d6-cc1c-403a-9a56-be369bb0d289.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c74198d6-cc1c-403a-9a56-be369bb0d289
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xff3f0c5a3dad5288545e3520ebda3d8835fbe2969ca2624719a3bbf0b536e26e","name":"Mama Yancey","registered_at":"2026-06-20T21:51:41Z","symbol":"NIM1721733","token_address":"0x1b7b8a07a65e2a0123ef83cc2bb93ca955a2c3b4","type":"artist","uuid":"c74198d6-cc1c-403a-9a56-be369bb0d289"}
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 0xff3f0c5a3dad5288545e3520ebda3d8835fbe2969ca2624719a3bbf0b536e26e. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c74198d6-cc1c-403a-9a56-be369bb0d289.json and https://artists.proofprofile.net/proofs/artist/c74198d6-cc1c-403a-9a56-be369bb0d289.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xff3f0c5a3dad5288545e3520ebda3d8835fbe2969ca2624719a3bbf0b536e26e","name":"Mama Yancey","registered_at":"2026-06-20T21:51:41Z","symbol":"NIM1721733","token_address":"0x1b7b8a07a65e2a0123ef83cc2bb93ca955a2c3b4","type":"artist","uuid":"c74198d6-cc1c-403a-9a56-be369bb0d289"}
album: Hurry Sundown
  type: MusicAlbum
  date published: 2015-06-04