thumb|200px| is the French word for the color of natural wool (freshly shorn example at the Royal Winter Fair). Beige ( ) is variously described as a pale sandy fawn color,Oxford English Dictionary a
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 0xc88bab69eba6dce3ec178e7e34637e1472dfc36ca14a107838b9be5ae2fe29e1. 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/d4268b0b-6a46-4bfd-8edd-402713e6042a.json and https://artists.proofprofile.net/proofs/artist/d4268b0b-6a46-4bfd-8edd-402713e6042a.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 0x6a7b3d458d8b8c50c9573e4aa356c14fe21cf1bbca3b8c3539cebde84620d82c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZRP42275854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4509bc7803507efa0c571c26617fdeeb32acc0866135de12a81a3c563de4ba. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTB42289273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb1c7a0786ebfb6dc706df868d9e27d6b45cf1e7df931d69e1fbf9d1913aae6. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/QZTB42289274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bac068da777b90bb5b5163649dcf46f67911fd494e1e6de4bfc0c584c154a5e. 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/QZTB42289276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03c59ab94dc0ea95ef13c29b29acd8cf41765e608acd2fa107cbc850dfa0122. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTAZ2347223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaba4e3e629324a3635d3ab2be2923bb512e15d00f66b7e6fce55ddb7099500f. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZDA42547198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fe730875386ba2c0c8f4a5d49fa79d8ae86fa384ae6a6c7de7b3095f0be4dc. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:35:21Z), 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/QZNWZ2537782.