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 0x2d2e28801ecccb981e87b7b86b6acb08d5a622489bec86321c69ed4a0b1a80d0. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48b755b7-c19c-49d2-8f1d-c874e2b11fb2.json and https://artists.proofprofile.net/proofs/artist/48b755b7-c19c-49d2-8f1d-c874e2b11fb2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x5cfeb8d5b181a220aab42b0e6e7d2db685c1cc49778ae258fbd139f3a601b11a. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:53:59Z), 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/MXF171101500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558117b066d8977d942464777171cfab01e469d8fc8caeb3308307fa82424935. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/MXF171101503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb889a391848395cf53bf427388e803c2bbaa955178cb35fe883c6666c0db1e7c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/MXD782100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea1895589e778eee2fb43185ef88ef9b28ef3edab98d1e794a78ef2210c8a72. 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/MXD782100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23643981fa2bcde6817fafc24862757732bf630ad530639d05a53e69418d357d. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/MXD782100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1e1ced1e1c852f1206289332b93146d6495ba8633e36f7f0f1d4bc28b5be16. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/MXD782100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8534684f86d94cc04e5a3edb140542034d13bcd046cf76316c0e27aefb74a495. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:02:54Z), 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/MXD782100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6329378e1cbddcd98ca9e6cb92ef7659e51ba734a0e91c46ca18f81fef620c18. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXD782100096.
Desde las Sombras (Concierto Acústico) (En Vivo)