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 0x8be003640bb1637f89ad9be6137b0dc3355e6d4cb1b7c48adcf95bad6cd8f36c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d352cd27-4c7a-4e3e-830d-709cf10362bd.json and https://artists.proofprofile.net/proofs/artist/d352cd27-4c7a-4e3e-830d-709cf10362bd.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 0xbb191126ed50e31f1b1600ee956a07d28fc1c7f9d633fb196f65c36ddc014e19. 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/SE6SA2402320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c2163cd992f781e315a61adc7d916a593460f700031a4a474a60571f6923de. 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/SE6SA2402355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76362228d24a6680ff853cf024bb891c007d188a226cd28c06d4ea12da422ae. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GXD7G2271242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c4ef71e9737fd5ca7fad1ed55e2fa5cc5b956e5833466e763a5bcbe5804337. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GXD7G2209892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd97cd43ea6c4725ff552f19c6a4699e25ce6f9d578d42d082c9c1fdd9da4cc3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SE6SA2435182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979a960570d69afe69666f76978c4586a2a4d8bf29bf8d8ba1c00fb4e28068a1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:38:51Z), 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/SE6XW2414182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193fc7d50d13ae23e2f361827c67900d2a87e3defdb363b36da9b7197a907ab9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:49:35Z), 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/SE6XW2414219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561bc5d06878fe407be4cd12f133c0348af13aee425bf922cfc77442b26cd38f. 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/SGB502526250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8940c006cc03663d73f0431004ebe2dadac5ea31ee07134c911edecac5726f42. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SGB502550496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9906c9279c676863eba627d5b64b70cab86b85d5cc72f92f7e19bad15e9b7949. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SGB502588429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf2a646cd3ecfa419a198c7572fae2364b3d9aa709a4e7e2b2a979bf27e0139. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/SGB502525861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaea82a9ab229d5dcff92dfb069692ade0af2b8c77e3d4ec4ae3e28adf687bfd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SGB502599374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b617f17d8462267d966d0877afb443960e93b3d3c83c4d94d130d74562be787. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SGB502516770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ad56c3e65aed87f4bc3f3657d132d3ff349d8c89f5f90cf3aadedb1b05bb45. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SGB502586239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e33274c2515a23155791446d8d0e5762869fcd921cf6e54d15989faba38fa9e. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/SGB502585894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6f7c360b5cb8648586aa8991d810801dc1bc3a0258edcc4d9032a13bb534d2. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/SGB502566776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10575511c3e540f527eda5ea65efdaca7dd059afec36c1252777932df00a4f41. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SGB502568955.