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 0x9a9a2b129d26c21ef2d951357798fe307e50b02355cdfdec7ad3c453728daa6b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77e6af2c-a20f-4e79-80ba-c4edc272b193.json and https://artists.proofprofile.net/proofs/artist/77e6af2c-a20f-4e79-80ba-c4edc272b193.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 0x827c6f6ff598bbc0990f9ff24228cebbc545ee85c05ce7c80c1716de52e61833. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR2X41558847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e2eec64f5749fdf4684a0c9d9722e2fb0d8bc01a420c3b98a18eb50b72697c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEN120101751.
Vitorino (King Africa Versus los del Rio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6364f9aafcddc3bfe4ac90cc0aa1f4fb9b8512898f9cda8b5c8a990d5b9537b. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ES71G2302418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad7258ee3d4cd1f624d8a7ae22a376e803c4674cffe79a325440f61255e9bc3. 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/ES71G2302423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61aad79b3cfb15b3ee770f5458ecac702af3002b45d8f6287b110ea1aa01df54. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES71G2302424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca02b871c20775a8f9a69d9d4a45d7e9a5691414a8505dc28c2f8a66335cf12. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:21:08Z), 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/ES71G2302428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96d06a2ab4922af6eca588a6e16ef40070d80c83cdd19f663160f9bea3e5523. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:07:19Z), 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/QMBZ92577410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6f0a057b42210bab5adcd1c3e9c3b57e2eb1dc62a252b56d809e8e853dfe30. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/ES71G2508739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772f95b8180f42696d866a4f57d05c23fe679d78daa49b55d03f756431443e01. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:52:40Z), 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/DEA370800451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6f0a057b42210bab5adcd1c3e9c3b57e2eb1dc62a252b56d809e8e853dfe30. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ES71G2508739.
Gyal You A Party Animal (Spanish Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88913c1ae3db71c9d2da7ae8ef518bb8e94f6c12772182dfa90b6c4107a95a00. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZNJX2515006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c58f5f4ddcf88068e6378999f68128a190603d763a906625476fcaf64149079. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES5700704201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fbabfe3585f1a1af8b2585912b9295114af66d90bba83e9cd17b91701be707. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES7510930806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fbabfe3585f1a1af8b2585912b9295114af66d90bba83e9cd17b91701be707. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES7510930806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3a9bbb2ede013a9bcafca79a16ddd1915bfae4afaf6c1a28b802f928550417. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADQ1877738.