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 0x1d17d4047d0985b944031edc104a134b459bdb8f36aa98ec473d035a3e4d850b. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fedd7d7d-921a-41d6-9c7b-148e006efbdb.json and https://artists.proofprofile.net/proofs/artist/fedd7d7d-921a-41d6-9c7b-148e006efbdb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bis der Himmel brennt (Acoustic Version)
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 0x9efa256551443af85b7fb12ac0cb0a589149d3c44ba3e54c9daca5d7cdfe3f62. 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/QZPJ32403578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b0cc11a455e3586cd6740d0aa3a0b5ef8a748778b627f1abe34ffd5b4d926b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:04:54Z), 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/QZPJ32403588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe675094ffb022cd759518d94a5a81a3ab8bd74163faf7b83560106de5ebab94e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:51:49Z), 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/TCAJI2598249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bcdc5bbf384c09936368ec15e01154580d0838534eef7070ac770aa2213f0d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:47:30Z), 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/TCAJJ2587934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb0db93a902cd56bbf880dc6bdd18c8910d0b9ed3cf0374156d7189614041c3. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZPJ32452315.