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 0xd60bac434088c7650ef65f8d9a72b7e2cb0a223b2e8f2a63b126b05f96a02cb6. 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/e14bcb8a-4aa3-4c9e-a5bb-46035770e129.json and https://artists.proofprofile.net/proofs/artist/e14bcb8a-4aa3-4c9e-a5bb-46035770e129.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 0x1fc2c3088ec79338a94d642300e11320f38970827dbcad6740e9df235979d57f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:10:46Z), 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/TWB510118301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c979728ecd7457c3973fd8719a374c15efa9ea2bfa0dbb52a7bff4c8d567729. 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/TWDK50904011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc4e150eff097ce3a57fe4e11f1d8251aef40f2e4010f8030979327976c5224. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/MYHY11500697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7efe4baf66e8982ac078363724e6afd985553526d8408b4624712d35d58d9bd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TWS050901806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742171d65b4ffd585d4dce00007d3cd12aead581f0a8b3a09fa5769b09abda5e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWB510329702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25157c8804a607e0ccd9b1310fcb5f0ba1e841d854a2033c7797b467e66af95. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TWB519805306.