1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x283af8fd4c4b889048792adc8ec54c6f312e69c1530c1a26546c2813ee28eb4a. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce25cc3e-ddd5-4bb7-a195-cf3bdd9d66eb.json and https://artists.proofprofile.net/proofs/artist/ce25cc3e-ddd5-4bb7-a195-cf3bdd9d66eb.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 → block OTSBitcoinBlock must exist at that height 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 0x3fdb2c314b56905d81aeb00428fbd6c81e2e6bd527cc4a651cffebad8a5ead04. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/USI4R0810690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccaf2449071b9b5f538f68b11987dc26391145641d9d40bcbd01d9357d6cc89. 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/USI4R0810691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b9de883598240212bab9f70541ac70317f51d6e4f8256891a9262b83099022. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USI4R0810694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4af4891ba3eb5be549276d425c8c1696e61a376d83decfd80685525e605568. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:19:52Z), 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/USI4R0810695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd236693c10d36b0333b9e052e70e495470a872da03c12b516f013da4c4b69b6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USI4R0810696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899800386e0f6e3bed884344d2ddd8f50e75e062be5721a74b8e36c079011726. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USI4R0904886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca99ec8968f6014d7e3093b8902526af0330b2472e71fcaf6005285cb3a44e12. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USI4R0904887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453a4de70c87aaf25073ebf50ec57d96bf6359d3e947fd6c12d797259b617fbe. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:38:41Z), 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/DEQN41400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cd686c81d5c02f6b876b6e59aca0df4b84113c0ffdbfd6be6ca9edc6dfd500. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:13:58Z), 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/DEQN41400016.