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 0x5be1242dbe7d2c0eefdd77996fc86e792184d7bf00faa0a4bbb1ba725b00b453. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be1b8e98-d757-4072-b3a6-4b211e3d444a.json and https://artists.proofprofile.net/proofs/artist/be1b8e98-d757-4072-b3a6-4b211e3d444a.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 0x1213e7e98c39d39718b9efbe7e8fa1d357fe0ec22926bf18c4f726066af8d2ea. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE5BU2452981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6195eab839718c362c43f114b65e27a22ecdf5593361fa9225a9c81ad2ef817c. 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/SE5BU2452985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cdc12452caa87c84b40cf547bf8b24c0e876917cebef6b41c6fbac2d142245. 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/SE6I32479255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c10032fca69fdef6bbb625036b18f7f137c967ccae686d4397c56bcc7080b1. 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/SE66N2385283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e03595a056214c9ff604a0d4f3486afa0a48d17e009db68b3b990b9a715770. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:56:17Z), 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/SE62M2325774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2e01cc6aacabfd2bd6242a1ffbfb1e29b67cf14b8b43bc8dc761f5256d4d04. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6A92370375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58004ca37afd221d44a08ad8c195bd43e0a58a7343f9263b714e388306374d4a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AEA2Z2334146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689f5a2dfb6158a328141f3fbbabd060de77fea562af39545ba77abe3a39d289. 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/AEA2Z2329434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd420060b8b77c6ff9f5995cbe5a0b567de84457cf57bb139cc9aa49790eecbc0. 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/SE6HN2460667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eea70667d222fd81807791d7231ce7c8391f8a0e5ff7d0ac7e66bb96476936c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SE5752464798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e629cd17ecf71a36ec82c0282faf0192854ef634d86a4dfd1a389ef5be4e1c0. 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/NZPB12400347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cdc12452caa87c84b40cf547bf8b24c0e876917cebef6b41c6fbac2d142245. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/SE6I32479255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66bd7da34e59d932079cb5950898ee4f3b2024e3aa64b1570aae9faa7ca75da. 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/SE6QE2308031.