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 0x58f5bdbc984e15d79e29122f19d939ad4ab720ae95a9016c1ca2272e1245168f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75933640-a67d-4638-b9da-ed1e57e51a8e.json and https://artists.proofprofile.net/proofs/artist/75933640-a67d-4638-b9da-ed1e57e51a8e.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 0x344d1f95ca899d5288c5b62e067cbaeff82a309b834cb3ba2036ad0fd71bd287. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/IL4291002395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d4c8503bb29e78f054e55897e9d3cc46e16aa6a6e5ed91a414ce0ca1c74856. 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/IL4291002396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2051979a1f15e0e4a6a24f827b464ba5941c701b26a0028dd6e352687b2125ed. 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/IL4291002403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04dbe90b965ba1401ab0066023d045bfbafb45036a565274621be8c38da9248. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IL4291002404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792e6caf1209cc9fba3a8b8db2c1f57123f12d6d61ab2d18a357921cb9be22d0. 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/IL1022112344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be96ad31499a0eb8332492f5c316642de5d95ee1166ec8e41113effc5425f6e. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/IL7532212669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288e9b4179ac7748c37869127a24582db63af4659689cfd3d4eb48a77f5ef3e7. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:31:09Z), 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/IL7532213104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46af0afa37d1d1366573a9d157621449b8c63cc080d0f267dbb11e597c74f55b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM6N22328288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a34f9f99af48bf8bb889fe588aef7fcccad88286ee726059fc46a0e1b6fbddd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6N22444622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a34f9f99af48bf8bb889fe588aef7fcccad88286ee726059fc46a0e1b6fbddd. 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/QM6N22444622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8180618d83b00801ceea1e899f66e2787327056f10dc442e5cfcde9545a86a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM6MZ2337168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd217c44d10364d9933a02273f57243fdb02aebdb53b9eecb86adad5031331ccb. 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/QZHN72470588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd439900c9a29e409e42d9797c823980a1779883cea98c04dfcd6081d0b4e65a0. 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/IL7532421552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a7965572b4fabc73d1a0caa20ad2a0695e0b4587b465585485def962a9add4. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/IL7532212777.
העיר הזאת - אופרת ראפ בלשית (פסקול הסרט)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bb589ad41ff40f8c29e2cf15057acb5f8491fe4184f2e8c033e5d86d1e5ab7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL2DY2300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adb934a336f353a596ad749e3eade26fc14ab13739ec8bfd725f694cced3013. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL2DY2300124.