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 0xc9fbef8639537315163b7b52ec9edbb5060da21867489e9d058db19ee8cb7d39. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e9cbda1-171f-4b45-8a49-4d17950db06f.json and https://artists.proofprofile.net/proofs/artist/4e9cbda1-171f-4b45-8a49-4d17950db06f.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 0x219752c9d0f98132bf227e1517991b8be762d7c15c41ff194d755b65365fb21e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DGA072277106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00fe164fb6f69079ba138ba8be71959fa39bb02cd918315a7018129d9295ff4. 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/DGA072277107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908ac0c85a6eed0e211f7be40cfe34edaf7f5bfa13f487da6f1519e5bb19ed16. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DGA072277108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbd7cdb836a5d39c15a0ed1ef9cf61a5cb40cbf0aca4917d3e0de25e410803d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DGA072277109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287b9c8badf725ee59e7c90e46c3cb1472ef3fca09c78e5ad2d6a3dc6c4512eb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA072277112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908ac0c85a6eed0e211f7be40cfe34edaf7f5bfa13f487da6f1519e5bb19ed16. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/DGA072277108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6d333ff117edb453883f63192c8a5f6996431ca1e9d80be4bec7106e58ce94. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/COA6W1900444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f355413677e9239c15adca473fb6d34ab11d0deae114ad6536aa88ba56784f1. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/COA6W1900445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d593ab4fbe83ec7575614a7af42f63f2b5121dab52eb91616499a78acfcd63. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:26Z), 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/COA6W1900446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf186d34345c8e208c6c7a44cd9f2e491be00f720f16a6fbb51e68ca44d755c1b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/COA6W1900448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f355413677e9239c15adca473fb6d34ab11d0deae114ad6536aa88ba56784f1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/COA6W1900445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171db3b7f647152a13b32dc421a254bbbddf7c641bb14ede64a97b04d6b59fd3. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:39:23Z), 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/DGA052255722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171db3b7f647152a13b32dc421a254bbbddf7c641bb14ede64a97b04d6b59fd3. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DGA052255722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a49623f6147b2a77eebc0bd0520f5ea875fecca2c26bb41d28b353ac31b601. 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/FRX762326419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d846a13022ff1a90d0c04ab8357bc06ea588281b79a33db3701cf1cff21eec. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:57:53Z), 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/DGA0Q2351026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a49623f6147b2a77eebc0bd0520f5ea875fecca2c26bb41d28b353ac31b601. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FRX762326419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647f1a18f0c9a6289ee3ecaaf857dd15f7429cba98e76c2c61f1a665ed59d416. 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/DGA0H2388190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96e29f99c810957f326f9240cb820e599c04d45f6f0b86f70d3dd51521df2ca. 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/FR96X2417231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57edf4f8ba81a379be933e45695855dda37d668949b11f44509a779d327833c. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/DGA082434539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57edf4f8ba81a379be933e45695855dda37d668949b11f44509a779d327833c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DGA082434539.