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 0xc7d26a3ae00ff736cb8d13b70ebe49110800a1c3eaa1c779682b8858e125e2dc. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7e25629-0eed-4534-b9f2-24387c2dbea7.json and https://artists.proofprofile.net/proofs/artist/c7e25629-0eed-4534-b9f2-24387c2dbea7.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 0xe6740684f362aad60f49052a4c5e35891ccda0fc7a2344296a1fbf31b26d0f02. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE2A52400302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9260fdea34cb6f8af178e39bd1867691d1536d4ae5ed58fdf7f29e865eabd060. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SE2A52400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0724d6a91536346d9ce90c3dc4846eb98faa10597c21bc729e558a840650be0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE2A52400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef2e2729109d47983474810bd3432db9a28304ad5cd3fc989bdd626f0f844fe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE2A52400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07cdf9357557ff52cfe04569511ebae7b6ddd5a4aea6edf8b31e2363f5e149e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE2A52300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff09abda6680aa7381be09414d9094101943a67fe84d1f0bc24ee0d1345e2604. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE2A51300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafa434ff33305b3270de1b123d20b5878b41d5adcb242d778e429611e957a9f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE2A51300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6aa9d550f1176ec7167df5235720f0c9e4aa2e2fc94e6aa753094197435499. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE2A51300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a1007f13655b5240ed8df7ed14479ae1f05e62f2cef17cbbced02ec46e797c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE2A51300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099c226908ba5f8fcee88338409b25186dfe346ebeceb8ab0c679562ae1e393a. 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/SE2A51300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287dae8d18278c785d1941c577201e55cdc0984b6e86a7020bb9fc69443909dc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE2A51000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4daac7836991164ac08577c220c007d4dd7288eaa9e965b3aa15216e27a542. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE2A51000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0c0cbd2a09078b346a85e5a43b0480c79490fe9aec4c67c95433c438f1f588. 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/SE2A51000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866ed66a602630c2045a376a61f8f7a6ee7a7681f90ca3bd1a7778571d83244c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE2A51000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c14ed93016841c555c0f3ba49b267629086a8457c62dd88fbe1050f3beaafd5. 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/SE2A51000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4023ea351c4e04582b2eb3a391323374be6e5a0cb47232c9e3e8d8a8fb756e71. 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/SE2A51000110.