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 0x6663db1a43214023f1aaff502effe380a4c401b0e1da43cf93595e96ebdfa5c8. 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/494cac2f-ca91-446b-b941-fb7e6a39a6ad.json and https://artists.proofprofile.net/proofs/artist/494cac2f-ca91-446b-b941-fb7e6a39a6ad.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 0x6d40e3dbfd10924740dffab73fa58e8b2cb9351e9d3ec86819b18d95ea2e680a. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/LTK282000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0543325c8bf68fca4f2d3ca95edf365a44e7b14a1d664400b08aa23d82359804. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/LTK282000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c563d45657110dd1e945b12ba72bab45d9e092f56e5017a96e1e016c34c9400. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/LTK282000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbe253fa230c5c730bb953403aeaf72f0c612f3497c1c589744e0e80e3785b0. 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/LTK282100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb7c99f74c00d846d59d19c499040ae5a254847949e4eac4756e2795de6c247. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/LTK282100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9427dba43242ceff7e688bc6a00d1d55470240bdef7918e1c4044c99a8c59b. 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/LTK282100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865a7d1aaffd1e847dcaf059510ee14f7e66ea6e0954f701107bf619175e9182. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/LTK282200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf818056618cd0983f04b105b30deaf12b82f12caa954ed0576ee50e759b4402f. 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/LTK282200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8e0424da19f6036cdc998b1377eb4ffb9c864884e5d0dedab8dc09445fdb6e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/LTK282300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46da58c6c3f831e074c5da9504170a46aeeda5e436cb31e07b6a2fe4d784974b. 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/LTK282300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8e5dcae46c8429591a16307fae4f5748873d70888440dcb8514ae00f5d69ac. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:21:18Z), 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/LTK282300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99be47ffcda44cf8b302ab2a7ad6788e682ca49ed456e876ae35c8ade6332a21. 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/LTK282300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32b7f43fafebf9e946d989f1c2bab1d7bf5272e639c06b409a1c968ccc69d65. Chain 2 (Bitcoin): anchored in block 957665 (2026-07-12T06:13:49Z), 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/LTK282400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a160019fd36bbcfaa0ca219f8576c3c5c06f2e1f6325b3dac997c3951f80406. 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/LTK282400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe423dae22252ef78b3ecd5f7ff2bdd982a1ce8cb804f886def26be7f0d422e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/LTK282400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544fc2d43e57d15e3ea19ace01eac644bd1d5629a6aa6086bdb28603a9d6acb9. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/LTK282400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1e280f183e2152ce91a2c871ff36d02ccbb67e1ae5afe0046aabb2c8270d09. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/LTK282500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff6353838c7f187b3407fa2d010c1bfbc0c1dec4e840bfe6011c3d5bd778afc. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:35:05Z), 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/LTK282500003.