Charles Kassel Harris (May 1, 1867 – December 22, 1930) was a well regarded American songwriter of popular music. During his long career, he advanced the relatively new genre, publishing more than 30
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 0x03683f772032169e25daed70b753ef7b3174860c3374223bd0c2311ac365d934. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edba405a-2273-483e-a378-d1bf00043bb5.json and https://artists.proofprofile.net/proofs/artist/edba405a-2273-483e-a378-d1bf00043bb5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Return of the Soldier (Original Motion Picture Soundtrack)
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 0x330ac9bdb182320e540dcde3e8d8c7230af79337d5725b78cf20697140ebe2f3. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:43:17Z), 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/GBDGA1305222.
Band Organ Arrangements - Russo, D. / Warren, H. / Strauss Ii / Meacham, F. / Sweeley, C. (Catch Another Brass Ring - Nostalgic Carousel Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28450f87c9b9bc21871b03fc97997081c401ccfbb09f82e12b07975d6963e468. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:06:47Z), 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/USB8U1003662.