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 0x3b98292f80a366f2ea4c786197b8661e97977ec74be95662e1c80f2fcda58d7a. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a82199d-eb57-4297-84c7-749c5ddfc519.json and https://artists.proofprofile.net/proofs/artist/9a82199d-eb57-4297-84c7-749c5ddfc519.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 0x6d2a51a53853861221a5babf10efc8b61b97ce129c8411bcbdd80f0c2e7c0c1d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BRIMU1703339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16297937028824b9004df097f698689a0e77f46c488073448e5a425ce2c09fec. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/BRIMU1703340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4285c2d35724e2ff3c34fc6b68051f7a3ef29cec310629b4a376c42f89afaf8c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRIMU1703341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d12147a5ae45248932ffaf87629d143ae0648159f1c3457c6047028e41ac0e. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/BRIMU1703344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731a4c8e4777d502613b8e0b14713b12f5df67cece3a2e46a3d5ed56279488d4. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:21:36Z), 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/BRIMU1703346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2424159c9e593ad6e830ae3e95ecc2404221b149be112d1659bb05948d2b0e6c. 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/BRIMU1703353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7108f97802d5627b7dee7ccadd9d703dd74e5d80a984fb9c4e8e9cd637ba97d0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:01:22Z), 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/BRIMU1703361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b783f261a188842685ee687e73e738b9600b660c8a3bcec30cc3d4165cd164. 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/FR96X1930495.