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 0xcf0e10c7326c550613d3295789bc879d79d741f4fac496ac25c845db44c69c91. 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/5f10d5d0-8792-452c-a53a-e4a0e54118bd.json and https://artists.proofprofile.net/proofs/artist/5f10d5d0-8792-452c-a53a-e4a0e54118bd.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 0xf228596d895e8ee943068e78d1da38ba240d4c2d81446d8c7a16a2e1064dee5d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:32:14Z), 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/DE1FB2400228.
Was kostet es zu sagen, was man denkt (Intro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93395751726bc3dfb5b0618ea09b5f48b09aeff7bda9f03c9ec31a04195cbb6. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:13:56Z), 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/DE1FB2400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888ad385a5ded43eb4144d1f47abbe66774488451172706ad9d9adfbf22a8fd1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:43:06Z), 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/DE1FB2400276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c0d452fa915ab5a755154b61ae9e150c2dca9ec7f433e6774ac3056079e514. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DE1FB2400273.