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 0x329c87127b1ae9b3ea42cd7c2c14d2e7f05511ca0f3b3115110c1c83916f9d16. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5eedb331-438c-46f9-b5c6-f2330a231de5.json and https://artists.proofprofile.net/proofs/artist/5eedb331-438c-46f9-b5c6-f2330a231de5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Instrumental Country Music: Best Country Songs on Piano
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 0x1b3d4821d2fa1e5ba2ca1cc14db18cb0cec0a00c9dfd9e920821cea88e261aa0. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/ES03S2105212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffbd8e00871fc14bcaa1922cab81264cb0c58c4a6a5e6ef14f89428c55d05d3. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/ES03S2105215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc419e0c1f37b4eabb8272a9baabb0c20f1ea190c23e08f9bf19e55376ac8662. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/ES03S2105217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9ea54453f7ba195e8a2d739180b4e22770a7f12dfde8e5e740b49719264b2c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:55Z), 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/ES03S2105218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c489dae6fbcbd57b52d16d97912787043b9cff836c2a55b7a3c6707f11b202a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ES03S2105219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fa51b9273f1ceec40a1f8d307238fecea632881a409c885cf7b15d237c6c9d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ES03S2105221.