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 0x0d241f261e9723724a5b7ae823fbfb67fb5b5530b496ff5f28af5f7d4ce3ba5a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/248eb253-0640-48af-b96a-1cf265d24ef3.json and https://artists.proofprofile.net/proofs/artist/248eb253-0640-48af-b96a-1cf265d24ef3.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 0xe4ff97846fdbe5f9b6ab7aaca604e12dd988d47a82367d172668dfccfe340e4a. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GBLFP2314594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0340f3ec75cc2afce902cb2d7e8b1d891abfc1e0e3db537f43419efd88a4c3a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBLFP2314595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790a72acaac87caaed4c3cffb1bd2ad72f044dff84b25ad463b6c0596bae96e7. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GBLFP2314596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ad06dfc366ef3eceaf3c743cbf9ba1b2a81f8133fe8d37bf4e0d09b951079f. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GBLFP2314597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2994ddb90b0ef18570e60485e10440d65bd57fcb68f16e961f093672a9ed079. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBLFP2314598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161c8e2e1769c43d5e55ede064eed5b825c36711f10bc2ab0717cf02854fbae5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBLFP2314599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771c219dd8fc22848bb15fa5aa028dc5a153029a1d9ce3271462434f6a1f9713. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBLFP2314600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb74e989c28f25535901ab236824d85adf775c44611f676c12036bd42a0c50e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UKXN22371506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38977f99a935833b6c6da0704435d306de6c32e32062313bb006a2b4d40925be. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:46:34Z), 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/UKXN22371507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b73647f90a4f0831e875375cd2c5fc3b13a9e3bd644390e54b4fd2a0d5e419. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UKXN22371508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537e477770a424585a34490c1233509ed3228389180c747c86709278b1eeff67. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKXN22371509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbc66bf9634ee730eccb36bdf896faf0c8d711f9ec416fb934305501db19970. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:00:14Z), 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/UKXN22371510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d6686f0899d252ea42e4901bc934fd592cbe7e85580fbe09229eb8d9322e2c. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/UKXN22371511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683bc2285b11a23ec079e60b514048cf38080e62404b4a5bb57821229d9b48a6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKXN22371512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fa0d074d78a08fc54cb8e0344af342fffd840b77eca8e9b1c8bbf417d5ac4c. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/UKXN22371513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4d3b5b296db31aa2b261da22e453652b441cf19e8c7de06688edd3342ac2c2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:02:16Z), 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/UKXN22371514.