thumb|Infant's bootees A bootee (also bootie or booty) is a short soft sock or bootlike garment used for warmth or protection. Bootees for babies are usually thick and knitted, to keep the baby's feet
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 0xe9e639b17f31db507547f92c777a9d8dcb0ea1e1dade77ab8dd403a98ee8e962. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab8d9507-4f71-4ed3-92b1-38c736989a26.json and https://artists.proofprofile.net/proofs/artist/ab8d9507-4f71-4ed3-92b1-38c736989a26.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 0x437577c7866d8cccc33c216d2ae4b786ffc0a3e37b243bc20362e3596b95058c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMEP2108991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f76039957ffee0205e3a016662de2c2d1623372a2de5ca17a5718378685f21f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:02:28Z), 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/QZMEP2108993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92558b12f9bb169c82e80d95e22de54144f8eaf7924ea5501356e5dd5a9ca57. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMEP2108994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669bdd73adb8bb7121e20926c8061e10002b760d679b8530c1740ca2a10cbf0c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:39:50Z), 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/QZMEP2299016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ae0782143608ac3918ede571521ff344a6524ab18f11f3e3d0ef23554fd4be. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USZ4V2500087.