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 0x94808746c9703c6f0ffdd06c3e98b4935355b09a04c7eeef87fe7a3096aa485e. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fae75820-56fa-445b-b77b-8edbb16e4d70.json and https://artists.proofprofile.net/proofs/artist/fae75820-56fa-445b-b77b-8edbb16e4d70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mängisch fägt's no & Füf Liebeslieder und ei Tango
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 0x7f6651de8474d236c2952c810e3f62202387ba7ce32e0b2726a1780667ca5a72. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:59:55Z), 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/CH0140200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0845fda80b82c0373534b9f43c7bf2651b08d02ea0c19c03aba4ef083e109f6. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:30Z), 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/CH0140700163.
Umleitung - Tinu Heiniger singt Franz Josef Degenhardt
Ewigi Lieder (Hugo Ramseyer zitiert Zyt-Dokumänt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acf5dabbcc89232e42403e467c4b1bb01da1df99ae6e59006ea2272330fdbf9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CH1080701551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da9989beca6eee57fae59c4ea9fc6e3bacf3b2eea4180c0fcbf3890ee95ae4b. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/CH1080701552.