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 0x3d0a81ee31fa1fa15eaff7aa81186096b56e4975ca3392a04e0e15932dac2520. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c220abff-cf4a-4b40-aa36-e30a1b6becfc.json and https://artists.proofprofile.net/proofs/artist/c220abff-cf4a-4b40-aa36-e30a1b6becfc.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 0xc008716a303a18b59e0e4ca602e04ea820eaa9245de61a97cb6f5cb105d338f1. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPVI00102090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bf8c2817a9bacf6eabdecfe97eaae057aacdc711427f7e7cb62c0a2aea49f2. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:15:35Z), 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/JPVI00102100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6067e1481750fdf21b7014e96cfac9b54af8780706c2baef0517e5ca056aae4. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/JPVI00102110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f98a9d2d5ab980299da619ce8790f067f911d5414befcbbe7d896c68a6c7c3. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/JPVI00102120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0fe95ba528a43f475a9b04cf6a7ed594ca1e900a7ff97aeab4281b7786e5bf. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPVI00102130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0e72e67e2853b4147992fccf86bc778d6cd6902541c4cfa387d06363aa4a4b. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:57:02Z), 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/JPVI00102140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c340df612050e46eadb152ad4485fd78853225b5f8fb94846369dbcf5847ca. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPVI00102160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138b1b3e04eeabd8ed0a5c45ab915e81a545a551ca53be15856b21bc34159cfc. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/JPVI00052270.