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 0xe227bff872c252663835082595c4412635d4ad3ed88133a2034137fd9bfeddcd. 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/45b9d7b1-4a40-4a8b-b88d-d68c470946b6.json and https://artists.proofprofile.net/proofs/artist/45b9d7b1-4a40-4a8b-b88d-d68c470946b6.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 0x633d652516a7e25160661c4f813afac0da6b82012d661a4ff33b49a6844949a5. 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/GBSMU1414534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2192115416229d610e54323e6fc58dd011989c96fb03639e2e2da63df8bb1cb3. 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/GBSMU1414535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a24e083d51b64277d34b7610bcbf2eb61c17ccc7f54a5219f9a56d913786554. 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/GBSMU1414536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096a07b2edfc53f27768c20ae8aa8dbfbac88e52d6119ead69c371aef3e0c784. 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/GBSMU1414537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854a0c660c06a7b0b2a33f9d6939e8bb9381fc11e6bdcbb300221ba841f5727b. 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/GBSMU1414538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f5c524bd5e13f4e5c5d30a960d01b39893b80e6193106cd47a39739149537a. 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/GBSMU1414539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe053a4d4ac53117eb6a926305e1a0a5a2325011b7a9cf73acf85f0e5c8a68c09. 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/GBSMU1264665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f3f80d5a6de3b0686a3642d026eaf3366878a4eb99db7647f08d4bee72db50. 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/GBSMU1264666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b96648dacc38fb081fe12ee60701fef96aceb90bc827c7e5270098eb510d751. 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/GBSMU1264667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900ff493f2392643246173cc094bdde4a43c07cb7315211cde7d1dd141278544. 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/GBSMU1264668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2edffc8431cf870cb4d6b3a34d2b530c2714f6ce508d57227fbb2f2e4b3c21c. 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/GBSMU1264669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba4eb69c82436ec921098988c5e64f784ea0f0de16eb20e626aaac29cd6d2db. 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/GBSMU1264670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9071ee83a378e25c14b7298868fa717c3e9844ae976d8b5ca66c7eca0b9cef. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBSMU1264671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7908d97568cde3def93d2df0969a7eb80fa99e27bb83954a222f296ca61bb1. 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/GBSMU1264672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8b7b9ca0464ab633e3e2d32a5b0418876d742460961576af61d4d9a76bc169. 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/GBSMU1150533.