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 0xf4c52c08a4171405d870b592dc32354302b947dbb2225f01fff8e83cf5187b8c. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7696a6f4-a011-42d3-b614-461e6a9a80ae.json and https://artists.proofprofile.net/proofs/artist/7696a6f4-a011-42d3-b614-461e6a9a80ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Disoriented (COSTÆD & Enigmix Remix Radio Edit)
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 0x78051951bbb907d36af2b17d5f12ed7da7046141b817c9d367e8c24a05730d40. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTB82320806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada39854910f5a97b149a1229f72701c1afea611a982e5814417d5b504cee1ab. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:02:07Z), 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/GBRKQ2584316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6472c15a97efca81a2a8338e7937d491d86f6a7218e69032885d98bd97c81ba6. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:56:59Z), 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/QZK6L2565658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2271835c2ba803603257bdece29319d482bc73b824e202344ebc7ec8d0ad1134. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZNWR2514815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbc7063799684579a1414c33590da13ad5183f944afd90ccc1e26b0db52ff8a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTAY2566156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999c46346d071667a1e045bf693a49231ac6b819ba0625dcc8515efa4ef162c0. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:46:04Z), 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/QZTAY2566157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505a96e53be2dc05a15689b19d8d4db989ac919ba9e9e1164f64e7fefbf215ae. 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/QZTAY2566159.