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 0x8e4b3d021251ff361b3d3251f836ea059d4d5aedb7419649e93d1d063bbe42cb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9fb3a500-5b9c-4112-b3ba-02839b232f82.json and https://artists.proofprofile.net/proofs/artist/9fb3a500-5b9c-4112-b3ba-02839b232f82.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 0x637e0654a4371611ffd9b641ac6fe6fb8d4b600762ea21b4c14b3df801a00bf2. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/FR9W11731532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762de37c64cbbf99e9e5122679689fee4f80b9e6fcca709b68e13fa734dee78d. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:08:01Z), 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/FR9W11731534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8808d6f10b272e3d5d977ad2830a3eb1c62f3648b996da171a8582cc68068093. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FR9W11731538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39faebe9f8a08fb992871cf2884401cc48f66654f6efbe9ceb9ee684abe6aaf2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR9W11909743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf973a78a1361c7a1b8eb8d28acc481f43bf4713a586afa9678f009690269b8ff. 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/FR9W11909745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c950161dbd170e36fbc9f06f1d97a9bbd557708cf6be6546928774fe7b07e2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR9W11909746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6152701969a7a78e651758c3e55d3a0825d24e368f3ac341860188b0d92fbce2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR9W11909747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe850f419369203f1f7a3e0e45220a7ec9203a294bb27ad6e1d01fea8a9227a5a. 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/FR59R2228677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79225ecd1caadf137a119ce7543de6de652fb90ffe5547788ebfaa64380b0f91. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR96X2239455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa183d85406b3c098760216749997c72a17bcc98dc1f2802707c034114a1d4b19. 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/FR96X2239456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8223071562bddd86c8ed02a8370c0398ba8ff4dd284758b827b318a2d7811775. 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/FR96X2239460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb08164f6de8ac301a8abb3773029a55c969179c812f832295499045b1783ea2. 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/FR96X2239461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc4efd7066f1b6b5282044c0403189c5a6d75ea0e339b18644737aad682cfbf. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR96X2239462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab51d873dbfd43c0cd524b90287c0cf5607f1359f51da315f3276073d7dca70. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:35:02Z), 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/FR96X2239463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79edad46b64ca5a2eef53a00d110bdee2336f70e93f68c978550a9a199dac0d. 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/FRPZ92514750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79edad46b64ca5a2eef53a00d110bdee2336f70e93f68c978550a9a199dac0d. 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/FRPZ92514750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2b79a446301ce802ced4531b41b21ed8bd148ea2a6e2135c2535e2e664f47f. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:57Z), 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/FRPZ92514740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2f080420a61772f16cee13d5ad88f75e2d2a3f035c437b6791a252f221505e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:52:30Z), 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/FRPZ92514760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4b8ac391bf09b07d393671acbd306cb801f17ef67028e946e12289636fa9e2. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FRPZ92514650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b9fb958a5052a0a2ea12d9985b8a00a012a9ae0a51710a32a03c519c17d7ad. 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/FRPZ92514660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c63966a9c7193bf0641e81b52a314e8ca1d413a31b6f5c1980137e3b47ca2d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRPZ92514640.