Hadda Brooks (born Hattie L. Hapgood October 29, 1916 – November 21, 2002) was an American pianist, vocalist and composer, who occasionally appeared playing the piano in film. Billed as "Queen of the
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93af89b639ef72dbf6f86696982754bc2dcb46ae154aa5fc2dbbb6a29e29b28. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfc892e2-e65f-40b5-ab66-75fde32db812.json and https://artists.proofprofile.net/proofs/artist/bfc892e2-e65f-40b5-ab66-75fde32db812.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
That's Where I Came In: The Modern Recordings 1946-47
Out Of The Blue: The Singles & Albums Collection 1945-53
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2711cd2a1048bfbf8f41db8d25019e5549d1dabba91097aa98e8aff8995a65b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU472201232.
City Streets and Cafe Beats - Hadda Brooks' Summertime Stories
Hand on Your Heart - Cozy Autumn Vibes with Hadda Brooks