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 0xfe531bffcf54ea0669ddab1033945042fc8b6fbeec332034622e76dbc0a52ef2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edd7a49d-3c2c-4aa2-8ede-17357f6fc091.json and https://artists.proofprofile.net/proofs/artist/edd7a49d-3c2c-4aa2-8ede-17357f6fc091.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 0x0786a35086d861dc049e56b103f08d5ddc4323261b6f8fd79c6372773b20a8da. 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/TCJPV2306176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5db472dead5b564a5df9e27216afcda77f03f9ec55430a89573385a9884595d. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:57:58Z), 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/TCJPY2326553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48731ea30e39590c8cc3503c5c1cdb0b915e4a5da00234005a4fd3395054505f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCJPC2426411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9befbe69d6f709e36361a7a8651bb3872f467dd2d83b82eb644cd2d43a284fbc. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:55:49Z), 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/TCJPC2426406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2525c0c29a0ec4f04cb891148d48ba1d5aab74b8476fab7ef403c55922b1cea9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCJPC2426413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8e711eedb0a91e3b443a1754093bd2da7a40958d2eb6de168c0acde55bc797. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCJPE2510666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57f7b2123991260be3693661a5abc46c6b7e339461707e4638a5a1b7274be0b. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT66J2556441.
Star Rail HoYoFair Music Selection #3 "Monkey 42"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe716405f5a85180419784cb62a594a87678d0211afc9cfd35d0bbca022ec04. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAT2557710.