Don Harper (18 March 1921 – 30 May 1999) was an Australian jazz violinist and composer. During his long and diverse career, both in his native Australia and in the UK, he was a regular on radio and TV
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 0xb6d555dcefe3793e51dcfd3ba645f04b6cb301cba2bcb2cc5cbdc993cc9ba413. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86c10b19-978b-49d1-9cec-02e987b10f37.json and https://artists.proofprofile.net/proofs/artist/86c10b19-978b-49d1-9cec-02e987b10f37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Doctor Who - the Invasion (Original Television Soundtrack)
Act 5: Rivers of Light - From "Rivers of Light"
The Music from Rivers of Light & Tree of Life Awakenings Shows at Disney’s Animal Kingdom Theme Park
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 0x36fc47c5d0d503aeb344543e52f05fd694c3ca3161301bed1247810bd53cb81c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWD11779872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9ac789b4a93148ae905c0712bc6d426db02c9fcd8e9c2deed8ac76e0fe58e8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USWD11779867.
Act 2: Parade of the Animal Spirit Guides - From "Rivers of Light"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3f4b33025da243d17d0a6fff6048c78bfc8fb4c9e887b8ddd47a16db432e27. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USWD11779869.
Act 3: Dance of the Lotus - From "Rivers of Light"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51aa9435bf8cc7b725894a5d56cda55d37a202aed1eb092f50a307b7e9bbe98f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USWD11779870.
Act 4: We Are One - From "Rivers of Light"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9595cb635b2e482738e354f62e62e6a6263e7a3464f272629cde7aff31bd6676. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USWD11779871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840f5f989a531e51564fd91acb9f5de6403ce6f44437924294f45bcf89812c78. 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/GBBGL9300666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840f5f989a531e51564fd91acb9f5de6403ce6f44437924294f45bcf89812c78. 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/GBBGL9300666.