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 0xa10bd34ea9873cf49deae60f1e77c597a0811e35501a38d4f0c8152e93cb883c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69f481b3-c928-4cd4-9acd-b8ce970679fa.json and https://artists.proofprofile.net/proofs/artist/69f481b3-c928-4cd4-9acd-b8ce970679fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bengalo Rap (Ich werde rebellieren) 2014
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 0x44ff58e5777f698d363b54aca75f399538e9611797d881c31272d5980081d092. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:06:09Z), 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/QZZ7K2572126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edeeb3f1ec09843bf51f61610dbc226fc35320157aa0e737ca0fb5e41ad49d4. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZZ7K2572127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9009da7a15628dc13a5de0155339dd7afe3b5d96c1a0c5324fd63ea11cd007fa. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ7K2572128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7e0b0b6b52f9c13ffc6714498b624e1a4e108cdd96b0bdee8a2fbdcb63609e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ7K2572129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12eb81b66678b04c4e8a93822956c9125cca9351bc8d6f6ceccbe4eb3f73d86c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZZ7K2572130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a7e7368d090e7eedce7428b15cc7f56855b0ad2d7eedebef7baa61fecf591d. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZNWQ2498164.