Carl Stuart Hamblen (October 20, 1908 – March 8, 1989) was an American entertainer who in 1926 became one of radio's first singing cowboys, going on to become a singer, actor, radio show host and song
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 0x311647efb76d34bb5d3ff35c5f0bd59a774d6d567780c45fb5a808ca4bbb685f. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b0fe69d-c230-4902-b671-42e40de72cd8.json and https://artists.proofprofile.net/proofs/artist/9b0fe69d-c230-4902-b671-42e40de72cd8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
This Old House Has Got to Go (There's a Freeway Comin' Thru)
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 0x571c8391da926c5351989aa8dbcd52f96d6db9517aeabc3c3e0dbcf1db9c88f1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USA371097883.
Open Up Your Heart (And Let The Sun Shine In)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc723835f7ef6b70ddbb2efc547aef69976bcc41875ba0e3ae37d57d388f179a1. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/USA371097884.
Open up Your Heart and Let the Sun Shine In: The Best of Stuart Hamblen
Top 55 Classics - The Very Best of Stuart Hamblen
Open up Your Heart and Let the Sun Shine In - The Best of Stuart Hamblen
The Boy in Blue - Stuart Hamblen in the 30's
Christmas with Elvis and the Royal Philharmonic Orchestra (Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02d600917f13c4417162c955d5bc9bae45dd7406ecfaeca8b46f2e750e48ed7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USRC11701893.