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 0xd8de434105ff47d00632ab914e8e8837329c50a0547ab045b2b8398a8dc494d3. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0fb7c9f-9c05-48ac-95a3-140fa70014d3.json and https://artists.proofprofile.net/proofs/artist/b0fb7c9f-9c05-48ac-95a3-140fa70014d3.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 0xfaa3d1a93b03f7b22fdd190f925e9610e01f6f3c662509783664a7d6fc5436b1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR9Z62100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17adc249b11717bd8f3d7181e95be29b5d5b9c113d4f70bf76d47fbf2d177a55. 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/FR9Z62100127.
Chillhop Timezones vol.1 – Saudades do Tempo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61c178a973e557321ef9d9eadc00f8df37d243e6e63c8b29dbf733a14d18d02. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL1LE2000838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893466a4948eddf940499b00449a7296e3523b1a7bb91a4e01673aeb253dfa33. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NL1LE2000839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd6bb47dfd2645f0b305db744e3eb16059a4c7dc52e1e8f3e84908f39a85d45. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NL1LE2000840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7fea17a27ba335b56190c02eeb1518997ebee52de82f59bcc11070e9a65bef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL1LE2000841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5103dab3de4320f7d541b9f92952607fc85da18d7711f549ab38f84c47a5892. 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/NL1LE2000842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692d933dcd1464569f5289b5529ae36c0546fc5c8844df67360544ca6d9d73ad. 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/NL1LE2000843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd3b7c0ae83123db712cacc0f953ae45e4fe7c7af51e37cf5c6be4b61cfad6c. 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/NL1LE2000864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf8991e866d905eae367b9fe5873d4397a95a7742cf4dfc9f4661b6fa3afedb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NL1LE2000863.
Smooth Criminals (The House Files), Vol. 2