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 0x3daa658d2cd3b0f96bd3e9db291fd59f418987083825a30d1cd5d860b88ba211. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e6f1185-ca44-410d-b107-2bc37ef66b16.json and https://artists.proofprofile.net/proofs/artist/5e6f1185-ca44-410d-b107-2bc37ef66b16.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
One Lone Branch: Songs About Coming Unto the Savior
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 0x4b5d4096f4f0d5fe1e1faff0d0beaaea78a98151d46320944468fed715e07cbb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX8KD2316078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4239e41bbd599367a94dbbb17461cb2c93e36a37dec58319a46703905800cc94. 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/GX8LD2313892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb460890277cca35dafc3d0ce5312a54562423444bcaee29b5df738cc7baecfe7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GXBDS2396901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e142007354b75ef8d9b5610e583c0581b89aa55c616df1e0e34dbd2c40715ca. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:21:12Z), 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/GX38U2431807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1961d497e8f0b886aab4a700d7fe82b8b9a8cd6c21fd0a94d17eeb82519e086. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GXESV2425128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3c7c1cc87e7a62c1cf57d33f18ec732469f658cde4fef049b656fa5ffc313d. 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/GX38U2530553.