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 0x7a03e1e6e79f9cb5b287ff871d661e2f6afb6a4bfb86edde9fc5edcfd1e03539. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb472204-ce93-42c0-b0cc-b17d9e0e2cd7.json and https://artists.proofprofile.net/proofs/artist/bb472204-ce93-42c0-b0cc-b17d9e0e2cd7.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 0xd85adf09317c5320c3a219f0eab1bea75b98b95886625d82cdabff8bfc9173ff. 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/EEGM52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60871598016197b10e5aeb25ffbec81f9a16dbd3da5be1f05b679e5c38fada97. 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/EEGM52400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b345b866b6a5252cef4aa081e7e3cc843972790d75d837fd42b72f34116f9a. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/EEGM52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c7bbb7295197b3351ef48748806c7c527625922f24569b790d58935c601d53. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/EEGM52400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204d67c5c73c9cd8b040f8b96c6782b6de0ed1bf4934be99db494c63127a28df. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:40:47Z), 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/EEGM52400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a37b5cd231343a0a225982b485ee205c792402e22174c422ba506de40e1e017. 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/EEGM52400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b4580137d0ab53e0da10389743016b8cd8e85f4af9a97384701b4e5465c952. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:02:24Z), 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/EEGM52400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c776218be4ea8de0208fdb73530bd6306831111f9618caab4cc2db915d3626c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/EEGM52400008.