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 0x514c4608c31c3e8eb83b9f93d36e474feddc72a49948e029cfc0bcc25b5619e6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b357aeef-f1c1-45b2-a772-95787cbb3d16.json and https://artists.proofprofile.net/proofs/artist/b357aeef-f1c1-45b2-a772-95787cbb3d16.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 0xfd77c4570beff710ac639c9eb58a4f4349bdbb28542dc46db6a1d5bdbbf5adf7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:49:35Z), 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/DEWS51900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a585f65cb47ec95e73187ee226503977ff3c527f7f3f0206fb41456c5282392. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEWS52000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543bdb7a2d4ad37672a13b6ef9581965a11c5ccffa618ec137baffc8d7cff6ed. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEWS52000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbceb1d52f7b62cebecd3e0d215e086138f45ac196599413d068b74246ddd6d50. 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/DEQS92200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22665208af1d3defd9ee3e90e7ddf77395a2fcbb105540b341db677c77e7856d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEQS92200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e73d187ed9995e50294ca0830d198211f6c225cab989f68c39578ad8024453. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:07Z), 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/DEQS92200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbceb1d52f7b62cebecd3e0d215e086138f45ac196599413d068b74246ddd6d50. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DEQS92200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367058544707de2180162c62a69c019670252eebfff781a9062739cc8fca1942. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DELV42300807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899f8c41c794c3742d7348d5894120c46960ae619934d3a7e432437dba133138. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/DEEQ82500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf539b7eb147293eef369b880df31bba55205a39b48e50bd668c702957142b726. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEQS92101143.
Wie Du: Hommage an meinen Vater (Zweite Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf539b7eb147293eef369b880df31bba55205a39b48e50bd668c702957142b726. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEQS92101143.