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 0x41f1ab541f9ef7c5e20d56eb25b16d05a597f21c9fde82c29a2628a81dc843fc. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab62e929-020e-446d-a1a4-0d13bf5dd881.json and https://artists.proofprofile.net/proofs/artist/ab62e929-020e-446d-a1a4-0d13bf5dd881.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 0x242c38ba3c2c5e05002e60de3dbeedea0af385fda16c8d2011d52adf35a9f0fd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CH5011900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eda98a5cd7b5f8d7bbad1d2ac9d85e45a867652e0b1b8e68171b05edc763192. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/CH5011900107.
Schwarze Puppen 2025 (Schroomp Radio Edit)
Schwarze Puppen 2025 - van Giessen & Ducamp Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec069db1b8d52abc7dcd898839de52e27c02b5e3c4153a23e30ec023dd7ac18. 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/CH9742500084.
Schwarze Puppen 2025 (KROWTEK Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5df378112740f4e2f0835408329d09fa6ee5dadc37105c85cbb1d3400208db. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH9742500074.
Schwarze Puppen 2025 (Kosmonova & Royal Gigolos Remix)
Schwarze Puppen 2025 - Kosmonova & Royal Gigolos Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9eb3e362d9c34957cf65658779c17e17e3a6f0c5d23d8279f94245cfa94b97. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH9742500139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2661a2f538bca2d0ae2bd5c17cf78bb384b1e332c71ba403c38340d77807279d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBL60609580.