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 0xd2f06ea688b73834ac755970e9a5e11e331eb3ecfa6d09942113566f44d984a5. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51e489ff-70b0-4899-ae3c-354d9b8ea08d.json and https://artists.proofprofile.net/proofs/artist/51e489ff-70b0-4899-ae3c-354d9b8ea08d.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 0x2289ff7e1c15b9f00d54fbc06d50ed22a6f5c661d70dd1e96d7ecb142009bb0c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6XW2542890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e6cfb2404041eb98a0dba329754a32589f07d5dd12d4c6e779d7ed914d441f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6XW2542891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8a564d5923f988cb5d77f7ae0c51d1bf54db3a80723b7aa0ce7bb594df3532. 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/SE6QE2239093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc109b3777f79af684772ee6a7512c80a635292bbcc86a0e0bcb55d282176ccf9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SE6XW2542892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f7f211c43807a6d39eb4a17bf4fcdfd8512eee9d62496e5552c38bb267ed2c. 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/SE6XW2542893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cc62e3f5bd80a1bf51a1023661383c12f1588d6cfc36292436a22ada60b789. 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/SE6XW2542894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb8e29bb30f405e0a3601eb109e9a811dfbff87ec9b89988c3d6ddba37600da. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6XW2542895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db3e6ffa2e6a60aff48d5061edd1298a20d367a72288add4a5c38d656aab239. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6XW2542896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377c0442384f74766ac0add37175b693a119934bfbc36c50d8ea0f0071cab35f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6XW2542897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21707e0e1da44c5b793167c0f18cd9f23ad7b17038cf468cdb79b4eb52b5216d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6XW2542898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8a564d5923f988cb5d77f7ae0c51d1bf54db3a80723b7aa0ce7bb594df3532. 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/SE6QE2239093.