Florence Agnes Henderson (February 14, 1934 – November 24, 2016) was an American singer and actress. With a career spanning six decades, she is best known for her starring role as Carol Brady on the A
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5f71eb98da054ed81ea3ea3a4f6b9cffef085564c7b1e3f0e48d3e5d26a347. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d599b22-fb0a-40ef-b53a-ae571d2d7cec.json and https://artists.proofprofile.net/proofs/artist/7d599b22-fb0a-40ef-b53a-ae571d2d7cec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Do Re Mi/The Sound Of Music (Medley/Live On The Ed Sullivan Show, September 24, 1967)
What Do You Do When Love Dies (Live On The Ed Sullivan Show, April 12, 1970)
Song Of Norway (Live On The Ed Sullivan Show, April 12, 1970)
Selections from Flower Drum Song and Gypsy
My Favorite Things/Climb Ev’ry Mountain (Medley/Live On The Ed Sullivan Show, September 24, 1967)
Oh What a Beautiful Mornin' from Oklahoma!
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7a38db459ca2290948cafcd4829e5d6c2d31575dc174c28ade9bf6a15976f5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USSM10407060.