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 0x5d42870610b44b1d65c75e5e70e31fd4bc302633956c0e983434502c7277743b. 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/0e57f747-40ae-4784-8155-983602f8001d.json and https://artists.proofprofile.net/proofs/artist/0e57f747-40ae-4784-8155-983602f8001d.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 0x72753aa98f37ac993c438a7bcedeaef797da0c0d7dbb8fd6bbb21322b76b9a17. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CZL471900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c9080749b44d6e06a730434dcc1eefc897ab506d1dd85377b12fd3296d1984. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:01:17Z), 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/CZL471900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0e3d5636e0a2bfefadd017df1dabd496b6e2943ff1d786fba666dfbe347606. 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/CZL471900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000aee522b2efd939c9a979dac3ad341635eb147ccf6ce86140c711dc007c8a7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CZL472300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4239e78778bbabcbb5bae0e7e47f5d57fef23896daf1ca76cbb6c9a69883da1e. 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/CZL472300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd5982176630b617037b2a797ddee0c8e6625c1cfc95a54464b65dc9db88459. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NL4ND2000007.
Cedar & Sage (Riders of the Gallows Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0651c10d65107870d9d06747986a1a508482698f540a3d921636a9a70a6392. 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/DEPI82300467.