Norman Luboff (May 14, 1917 – September 22, 1987) was an American choir director, music arranger, and music publisher. Luboff was the founder and conductor of the Norman Luboff Choir, one of the leadi
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 0xa009b0d01015941188dae3d81c61656654181a6c8e3d9d622e0e884ed18e7f05. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5599a6ec-5ff6-4930-bfb3-15011f568056.json and https://artists.proofprofile.net/proofs/artist/5599a6ec-5ff6-4930-bfb3-15011f568056.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vintage Dance Orchestras No. 199 - LP: With My Memory
Vintage World Nº 65 - EPs Collectors, "Festival Calypso""
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 0xd6b09316c97a30075c17d32400a4f7a688b9ed642279be5eda3ba261d4293268. 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/USSM10028012.
Mary, Queen Of The Universe Shrine Choir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c801898c3beef9268a220b65b5e6f3d9afb52d95d3db387a1271665eff7aee. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA561253508.
Tell the World: A Live Concert of Spirituals and Traditional Gospel Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29579811c330b3e12d902ffbfd5ed69d11daf88431c35b94582260126dfc259. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US4BV0893408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e626399a49df703dad9a08108d09e45b2ec22ccefc8ee10d79f2bea8d8a64d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEVOZ1206812.
Anthology: The Deluxe Collection (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22feb44f84df8d44d87a6feec375d495c61eb19c36ac1bea5fa12682087915e6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DE1A22108570.
Joseph Dearest, Joseph Mine (arr. N. Luboff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8586fb06224e0a479d64a770607529d5c6f95d53276475b858586e9899b1dd. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USG3E0220808.
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 0xcabe4d71a4c6ab68af4a6b9190cf2c0d5e9222a24d73fbf7b709a538d63b5d1f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DE1A22108569.