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 0xc6532d24297e5f119573183ccdf19f09009cdcce64232d8b379318d9bf88bd0c. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9842c0f6-78bf-4ba6-b8c1-3dbe83af8367.json and https://artists.proofprofile.net/proofs/artist/9842c0f6-78bf-4ba6-b8c1-3dbe83af8367.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 0xfacb20e28840170bdb520da02abed776fdbf25bcd6ed16c2afda6413edb3e9de. 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/QM4TW2472319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aec8a6a268086ac3eee4d97a2e08e09a56228f5502340505ee2d1a93c7021a4. 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/DKMV61904301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861e5dd9c21f563a21484a2deaa931bf32c03aa04748c78f219b211636ff9c08. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DKMV61904308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7955e084c41bae8ee3b0f1a05a48f53cf62556fc4843c34cbb3d1a8fb461f5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DKMV61904313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ae5c47fbda7304c7e4bd46afbf4ac590ec76d4e905a01d8fead0414c750fa1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMFMG2330681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e4e872a0ec821e3a610ed5ff2698f1481be22b4f4dfae0e16cf3bb40d8fbfc. 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/QMFMG2330689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ba622a7656b447919243dcada0a40b8cc71c78d6d4f437d004d697f0267f63. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DKBG42200703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b04b7cb0851e3c71c1ad1ffec2d8b7cb7440083b0e99c4cc5c30caa27504e8. 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/DKBG42200704.