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 0x0a423ba15b187605b832a4877426a7d152a0ac7eef37c8b63c7ede8b58371667. 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/ee7ba9be-c86c-4b41-aa57-282910dc8b51.json and https://artists.proofprofile.net/proofs/artist/ee7ba9be-c86c-4b41-aa57-282910dc8b51.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 0x4faadd4e5e21d598f921032946b94fa4f3f516d84ee7b3921cbdd311e1967f3c. 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/FRX282144401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75073d1d9bbbca39c40b816dd33ff9389bcd8c913f33233adc0052cff00741d2. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FRX282144406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe119dbbd4e0e594bca16048a29ab7ffc869cb772d9a81ccd4da22e30aaec9103. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX282144410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ccde80501551b89d53966030f6544a5de16a385f927298e19378f56a1c4941. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:43:06Z), 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/FRX282144399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f8923d45c801c04caa632da50b76571a034350d6ea499b4758919c721d70c0. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/FRX282144400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faadd4e5e21d598f921032946b94fa4f3f516d84ee7b3921cbdd311e1967f3c. 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/FRX282144401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752d9fca6166e89e1a2fa974e1cebdc561dd740affb76c1edde2a30c04aa3765. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX282144402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e927e39b95003e86c5838122a001ad3753b49a2b800356476adbe35abdc69e9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX282144403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79572a41bc38ebb6a733f0679f92f6dcfe0d04b704f3ce6918e5765c295af2b1. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/FRX282144404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409f4eea370e831aceb4c200cfb4ee8d8d6467bc445f816969b0031c756c0b38. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FRX282144405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75073d1d9bbbca39c40b816dd33ff9389bcd8c913f33233adc0052cff00741d2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX282144406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276526e7417e86e6e1e6491461614e2aae602d1e490fe340fe32d6b20383c87f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:01:10Z), 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/FRX282144407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bd7540fceb3df6b05ebe8ac670d1cd87078fa7f1ddf5a5f6e0f8711a956afd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZ5AB1823173.