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 0x01b99362d459b1b7c72d2dd0d136aa74372313a65ed5039ea95ddcd55fb141cc. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1256f0e3-7725-4016-9034-f11db2cd1739.json and https://artists.proofprofile.net/proofs/artist/1256f0e3-7725-4016-9034-f11db2cd1739.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 0x5b48bcac64ffbf78eb17569ce950659475d80d3f2f5478a21001863906955eb9. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZDA71929979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edc52e5f8705e3fe22e71f37cf55153267a35e8c6f27986567e9168c81042b3. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:05:31Z), 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/QZDA71929981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6895328ad26e3f0705b787db8a924e46650343650de09e92e329f82d84fce2. 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/QZDA71929987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bee6ee1d21c11dd6c65e8a0bd53552d8b24dc3b81e88932581f5aab2a929fc. 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/QZMER2100500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32094abf8431496e9e5ab18ca354cf49e7bfd6ad403d179e91943bb6028e2a9. 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/QZMER2100501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7b803e5b7f47045fb052277fa20e81fb9bb97650bd95b57f023789653d821b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZMER2100502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28fd58ca0d0a9ddd2ba6c344c5ff0fa1fad018a876337722c9b6636559bc36b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTAS2234076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919cec049571f781621315c95aabda90fdb52f41b93f245361f2bf25ebf7476c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:51:33Z), 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/QZTAS2234081.
At Avrat Metal RmX (Sistemsimetrik Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679c44a003d2f6fa06173e5a6abc3ff46d5e8261b6272bf717b60895e927b878. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZ7T2501084.