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 0xde43502df5634662909c2f08ccb998d542a610b1c37a4a2c1b55eedc13bdc0a6. 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/488b2dcc-52ce-4a64-a9bc-9e923f3baba9.json and https://artists.proofprofile.net/proofs/artist/488b2dcc-52ce-4a64-a9bc-9e923f3baba9.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 0x12001ddc7d484ed2945f78faa0d31d686ba72d485234e7e0f15803f3cc8533fd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:54:37Z), 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/ES5020600467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed9061acc28e8cbd897ba8da30c12108b9e43e8528d8f21f902ad546aba07b6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES5020900329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde23db219b1ff3c9706d8e78dcd7654dc801a2fe425c2ffaaeaea43ad5cfa02f. 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/ES5020900330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4539354919d83ad903af6b34d56c829850bcd51c99b4fd8d5b18dd1aba2dde. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:27:32Z), 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/ZZOPM2231730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c4e2a3a5a1b6714f469f9baa76643316579fd624e32db7c8892361a0fb4a2c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BK4DA2545302.
Éxitos del Pop en Español de los Años 2000
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c67c80ec1d7d5150c3042169b52787e99c7ea8e412c0fd6689231bd3e843b86. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5020900327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab1b4f9fa74f78f877f4b15e8d335c6f07ba328fa8838acdd3b8d5375137040. 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/ES5020600460.