1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcbf3fbc342361d89ec28e85328037e1cd6e67ac807c736d135afc8106a639751. 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/a9102891-3684-40e3-851c-e14ee123c5ba.json and https://artists.proofprofile.net/proofs/artist/a9102891-3684-40e3-851c-e14ee123c5ba.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 → block OTSBitcoinBlock must exist at that height 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 0xfe7c53b9cfdfb92290da232d7decdbfa19a8d26d8db4b32dbb6cc0f596a9cb58. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/HUA631800530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7331cb3f0855598a4362760df98cc55a1235973ff76f16443585fcefd2fa58. 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/HUA632000459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee8e5c8db1ad7b61a4ec9c46187532b1e530dc4dd8066a75288204239078210. 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/HUA632100511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6308f1abc8865f94f1162b546d8e76cae25c7affbd369896bb05d4297abc5391. 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/HUA632400500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd2daf414459b6e3397dab075156f68b6c7034e1abfedeae58844542747f9f3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:31:38Z), 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/HUA632400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5db5c3c2c184977b296c1c5c599c587aa81eef51bc8586657d9b09ab8bc5bc. 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/HUA632400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3846b4a3eecffb58c7a24f613e1233e528995e147cfa84fb3b62939ca0ffd07b. 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/HUA632400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445d4cd02122243e456ddeb35f1f82f95665e58eb987bd1ce64a741791a21f7c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:40Z), 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/HUA632400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d00de9b12c981fdbf0fc44f039ec73e8c487a586abc2ce1193803b2e90bd342. 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/HUA632400508.