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 0x4474022f2ab0ea55f4b39e384b91ebcdc4a293ae7a1c628dd76e244ce21fd785. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99d0ccdc-2958-41a3-aba9-1f7690da5e5b.json and https://artists.proofprofile.net/proofs/artist/99d0ccdc-2958-41a3-aba9-1f7690da5e5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
With a Bunch of Friendly Starlights in My Arms
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 0xb95966bcabbbd014fbb17683412c87aa1ad16e04d92ac6fefa991ac6bc4d254c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/KSA012182566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ad6ddb4b05dfa4c85304781c297d7235abe7033a1edc667e458b031d0997ec. 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/KSA012276054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9ed4e6e633eb293157f913855c7338b80bc6276e8fac382afa4d103b56b8da. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/KSA012280158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cc923613635adaf6c9efa5781d2daf9a58aeb5e814ba4285812cde2ded1fef. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/KSA012317290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8920be36e057a9a3ebbefbf0680c99e2f540b7cc0add6137165b2430bd9b49. 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/KSA012362661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe196484a9b6ca35f9026a53d8f257b568f8585a5595cfb385be9908c8da1424e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:51:56Z), 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/KSA012369672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf525549f71ee3978385ea475c495d71607f37049cb2a0c0192dcd7b0b1141e00. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:50:41Z), 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/KSA012400558.