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 0xc58d1a72a01b6ec029923686d2723616c61d37eb2ba2524401c430763b7fe848. 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/2ab6d9e8-ce96-4122-af5f-f123cd10b6ab.json and https://artists.proofprofile.net/proofs/artist/2ab6d9e8-ce96-4122-af5f-f123cd10b6ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mr. Acker Bilk's Lansdiwne Folio (Mono Version)
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 0x4f5f5218e94eb2957ae268327bc73c06903344e25a493b24c6e325e981280cdb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLA410815894.
Best OF The Essential Years: Acker Bilk & His Paramount Jazz Band
Seven Ages of Acker (Digitally Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7e8c85fdb596494d49ffe5d6072b58b31cd92dd818bf1f4a7785453ae1f74a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UKU6H1951948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3e471b69ece1fe4c4d3621021929da0ee2edd8c14fbfa5844c16fa21434105. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:15Z), 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/UKU6H1951958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3292b29d0d219f6e40cb351bf8cceec234873c5b457e6d4d3e04e67de510d4d. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/UKU6H1991193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d016c7ce3df57b330435cc4e945f139aa506bbe880794d96fe5a585ffba7168. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKU6H1991194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d4c61580f0e4aa3e5700f14ad9f985ca471bd77e02f5048875d7d8a9edad1b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GB8XC2107732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd2613c2b0d7138c4db2222a7a22e340d1ba37972a958a29e17efe01a04e9e5. 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/USXTN1089874.