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 0xcb4fc2e9172c6bcfc2e4825c681267d62808a5eafd8fc34606fb7dccede090f0. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89289a50-1624-4841-bc8a-046ffd5db6cf.json and https://artists.proofprofile.net/proofs/artist/89289a50-1624-4841-bc8a-046ffd5db6cf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stories of Times Forgotten (Int. Edition)
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 0x1f8c5b47bf265e90d3ec4f48e9daa2b91d491b9ee8fb8d83864bfcb7a988496c. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ITD292202452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e27e8b1296f465df04534117de767c08013f2214b9f03f124ae99e4f23465ae. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITD292202458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd160f6a639fcf10c236d7ee7c296811f3b8bf8162d35de709a7338ddf4664534. 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/ITD292402796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407456643ae8f1ff39a62c9098be9b1fb0a06e9c68be25e68d22f5dc1ec1e52d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:04:51Z), 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/ITD292402797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823704d10b952e38cef587b962e9248d367722e1ad0c33ec915c085c6a891272. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ITD292402799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9891ebdb2e56c2f09eeb537355bd35deda810c572fd9858e91749571228a8669. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ITD292402802.