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 0x4dfb41ace731f317ff817d4e6a47cd7e42a7a0a1b960b27af69ce031d9ae38bc. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f121f3e0-d382-4212-bd6d-edbb5b2b655e.json and https://artists.proofprofile.net/proofs/artist/f121f3e0-d382-4212-bd6d-edbb5b2b655e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Magik Seven Mixed By DJ Tiësto (Live in Los Angeles)
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 0xd568739135622c9c7c93bffeabfea827cca74621399ef399aa4d7f20f108a04d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLD681801942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0e42246238801a887eeda19aa0e9b82fd88e0c8461c7a88c20f858b9b976bd. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:32:23Z), 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/NLE719801911.
Magik Five Mixed By DJ Tiësto (Heaven Beyond)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8555a21db92101d7ba19ae6c3becf4bdf07577b8881b84c8ad6ae697320df2. 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/NLD681802029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec8c1fbc65e4db16a7cdf20cfec4a0e2638e04209ab3293789e50e1393b4d82. 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/NLE711201213.