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 0x61dc4a4b0e01ce123937616919e2eaada2d993db00615cbfc62273e003d378f4. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/618479ac-0ba4-4059-b162-fe48339763f3.json and https://artists.proofprofile.net/proofs/artist/618479ac-0ba4-4059-b162-fe48339763f3.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 0x12e3e396cbad43400a6aff56b6be1e05546512475588af88384712b2f76164ef. 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/QZYXP2340559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7386f982dfb0c7fe79d362d9e3903c241e5bb7908d49f7c3c29eaa7fcdf0d39. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZYXP2340560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc13b3447e44741e6643a71fd9ba2042ea0507c0bcec50f2c4d7ae49e382553. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:58:46Z), 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/QZYXP2340561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2d015c093e4a471d51ae0b4e321f45872921a8384fd83557b344c57fa114ce. 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/QZYXP2340633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff94a7972b843c9752db99b5174e7b7391d8ce3211e01e9672f8fdafe08ea006. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:50:50Z), 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/QZYXP2340634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7900fa463c26530d758d99a89b405441061cb43aec2631cdefe32757c5005d0d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:02:25Z), 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/QZYXP2340635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaf53ea0c867cb33c3ff3a4729b29363972c9e05493e40da347b5d47044eabd. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:04:09Z), 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/QZYXP2340636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5b63df0dbc52797017749a42d8e9466378b063da4c840b2325d6d9d0a69687. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:55:54Z), 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/QZYXP2340637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe278541170cdbb5c1e83cb45088ba6c0ada8c0f5448597af33f3eada545d6c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZYXP2340638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce92e00809a3f6efe42c9bbff78fd5cd842d28c174f010fdae95642657e9d0ac. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZYXP2340639.