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 0x7338505a3362e2ba009ea53b1a82e7f748eea00c2651381532563eddf1f15107. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2dd53f50-bdae-437a-b1ac-adaf26e18ecd.json and https://artists.proofprofile.net/proofs/artist/2dd53f50-bdae-437a-b1ac-adaf26e18ecd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
An Excellent Servant But A Terrible Master
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 0x20ad5d441cfad7a3b93b80a6931ede66cd0aa348d0be63adda289942d3522c28. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/USRMX2400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a63d53e42fa7df3f5c79395bc67a7cb722bb9f30a86e2a6d18408078f1687a. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:59:45Z), 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/USRMX2400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76545b5c3c639771c386f73d7a8a789627e92a087bb724d6c190868125c8478. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:03:32Z), 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/USRMX2400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17033919ed7f32fe5253c51bad494c57a327fbc0b0d1b5fff71d7e9b5fbc0d22. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USRMX2400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483e00c16e639279b9a01b1109ea881a5e25ca138df65d9ec24686b8935036d6. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USRMX2400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5007d838dd192a91b0b2fa11faafce7b598d77124bfc1fa1f88fbe20cd3f79fb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USRMX2400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989cedc635fad6993c1ba0a50f17fce28bf9fcb8d663169938176660b93f0dbb. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/USRMX2400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e60769244c5533b951b42c893d9ea4301382d72e67d6e1e4e98c9fe665755b. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USRMX2400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38c3a813ed2561ca77942fdb464a59028f16cd630f4b9b3da3f5efe09d2eb16. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USRMX2400087.