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 0x28185f2b5822a34ffa77551c18b2cf6c9073c4d43a2c29d4436969e3e2b1ffe7. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be1cb546-6a30-4fa7-9cc4-29c4782d5885.json and https://artists.proofprofile.net/proofs/artist/be1cb546-6a30-4fa7-9cc4-29c4782d5885.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 0x3d340934f52fd7402d2713a85f95c02f2c50e60594a4ad0faf5303a91dc51f67. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QT3EX2586388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ba9cf21d2f288088c4e8ef25615f9efdf4c8d663caf76bd0cb95dfc0ee69fd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZRP52573599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f585e92921bae2c769a42bd6c947fb66f6f0d55991159684a6ae07500451de3. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:22:01Z), 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/QZWFM2530001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af57f651af9829e83d5ae7d9bae83ada46a811c6eb1f96417cc7656e074f594. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7P2562067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe724b6f4252546936a7512c11d47ee8a765f27b8a91771ca9d5ee6eae785900e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ7K2537378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562839a41edd00157bfd87554acd925a0de8280ab1c00f34991f78d9be9bd0aa. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7K2548499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2adf43edc7339140f52836fdae843c763f25333e1669353197ef854708fb883. 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/QZZ7L2599236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f8c5ecd683fbc9933f6e55e8220d200148ab395cbcb6dce775f61dbc2a20e6. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QT3FF2502702.
The Triumph of Major Alan "Dutch" Schaefer