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 0x56bc5221737373e0648adff0430dbfd641ab973fcda34b8673823678a2a66eb6. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1249ba9-a82f-4f0c-a911-a4c17c3ec7ce.json and https://artists.proofprofile.net/proofs/artist/d1249ba9-a82f-4f0c-a911-a4c17c3ec7ce.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 0x97ff9d67a728d9235960343b8bd25692a61c77f5c6806b74400db0622c4b4500. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:13:50Z), 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/JPPC07801830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee2456bd5263a8401d2a637ce93691d8e058254d109d77c322a42fc828173d0. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPPC07950810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ff9d67a728d9235960343b8bd25692a61c77f5c6806b74400db0622c4b4500. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPPC07801830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b8a4f0e3da140fd12d3a1f0668f3255bc574594ec3a972e1e2bd2735f18e22. 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/JPPC08002670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28e778fd853368609d8408b78a7edd58242fcea6b777b3f42d3fc487e6ef1e7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPPC07801840.
Singles and More - Album Mishuuroku Zen Ongen Shuu -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01624f9b2aaf25d51efe5cd31eb097a672b4c9216ac36ea627bce12ccd47c1a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPPC08150576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e05e0577aa65c9a97e59c7c368e69de5d05a18cb9aa64080049acaeace1e087. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/JPPC07950807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee2456bd5263a8401d2a637ce93691d8e058254d109d77c322a42fc828173d0. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPPC07950810.