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 0x0a41827e281f63999966e8afe6e75ac5d4c2fba9301999faeb2a2f6421bf976e. 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/fa65fb52-a4d2-46dc-b277-db357cb6dd3c.json and https://artists.proofprofile.net/proofs/artist/fa65fb52-a4d2-46dc-b277-db357cb6dd3c.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 0x9ce9a096d4632fe28303c47747380a25a2c673a7ac84cba897c47307cecf135b. 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/FR59R2127789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfac8e7318bdc46050d768da16e478acc00a3eed7832c152a0aa8b9df42269da. 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/FR10S2119408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408261c20c4139ad94effdb93cd58acdb9977f21a6718f7fb9a2ebdf626b7ac5. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:36:50Z), 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/FR10S2119411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d8b04910b60cd95aec83e72f1e8e83617d908b48ab36b2760f25fc5ea2f6af. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/FR10S2119412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adbde653385d3b705ed515c486792199b2186c74d7bac5d0cdc60a43372b06a. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR10S2119414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81accebd92aa2c4ddd638dfe2995906ca6eba4e8f58fbca99933dd07d9979e57. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/FR10S2119415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f789f55c9367bcfe48ca1b0f4f683dd3028ace264fdbb7e127d0aa55ee6ee7. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/FR10S2119416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa330d479b3df0ad2e8f45a22250ddbe381703a587da4db9210d69a61afd0ea56. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:22:23Z), 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/DGA072179474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadeb4603023d5e02d2c3d0914327d105c5327fc7551ba54c25180e65abeeaf4. 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/DGA072179475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a4d7d6102acf546f6bc27dca72c7cc1e76abaeba5e4bac4879941770e0b5fe. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DGA072179476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9814029071b64b9c3cef90253b9c3b3b0451360b8b7094a639f94e828a33e469. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DGA072179478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339349f659490a179c4658a8cc4f9b2ddc912083600f6d658a08da0de1571a76. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR96X2186349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab176a77aa74cd5d9e7ba0d39933716ccec8531739db7fe55dc2b71375a0e4e. 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/FR10S2214443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc01451e201e1e335bfade59be663dc36d62044f544681eaeb4b6aba0fb81e8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR10S2214447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c69a26231321828d4a7505a8a0875b38c975cb434ab5e5e16e73a87dc03128. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:21:14Z), 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/FR10S2214449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263dc7f80a7c28955991b73a95d1e8284f90b1ffceafcb633198be6932847e20. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR10S2446921.