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 0x38ae0f73e1fdfc9e37981f7e3f937f22e2d8f64b97dd16446aca2aa54329401c. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfa63118-22b4-43de-833f-804236949001.json and https://artists.proofprofile.net/proofs/artist/cfa63118-22b4-43de-833f-804236949001.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 0x25e332b8033e8bf5f66404bb4e6de620610a943d4a01bb9d02cab45490315269. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/CH6542072642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8923b197cc0d72f67fd51876500dd5b840e250a52d03ab2b9505d44880c0736e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:36:56Z), 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/CH6542179729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac5f89394cf9d0629b7143a5f2eb28a7ace3e0bb51c823d3172d2d5161568da. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USDY42528664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332b94a7d8810a0dab57e3c8ee98327f4d86ff28a9ac7b186a1a6fce80938f87. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USDY42528665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aa3ee314e7ad563f4f3bca7d512a2095164506a1f52ad6859199db7e2d2f91. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USDY42528666.
All I Have Left Is a Ship and One Last Hope
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927b745e9af33d0900c4a6c9bd8e6ba1a7fce7a6a891f6f1399d98718908b2b3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USDY42528667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65474ed13d214c44182c9603bfa4d5c0a46a170d6fb3ea87c2789af92a52536d. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USDY42528668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835d8f7226ffe6a87fb86c3b3c3acbbd688fafcadb922659d8cd4b15f4d382c9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USDY42528669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8ef05c01c96943b67064aa59e20cb902aa55eb84fd4e86436aa1ac9e1705c2. 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/USDY42528670.