Fluor may refer to: Fluor, the name in several European languages of the chemical element Fluorine Fluor Corporation, multinational engineering and construction firm. Fluorite, a class of minerals
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 0x33e6165c0464bc5014b81b15e7edd643be6d39137e14a08fd4083bbf79f008f2. 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/c0a0ef4e-b4b2-417c-89c5-917380d9d662.json and https://artists.proofprofile.net/proofs/artist/c0a0ef4e-b4b2-417c-89c5-917380d9d662.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 0xe0370bfbe5f49850055dbd04f6a5366393540dda01384a4d22e26c64c27ef590. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/HUA791100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0259b06a70c9feaf5d26651c1c064d038ed2b27bdb3ee6ff3f6d524cdafde7e8. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/HUA791100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930c2f892e6cbc7cd963967e4a8ea294e8fa74e4cf334bbd8d930d252623461e. 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/HUA791100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c77076e49c57ff1d6b6b4d58caef9efc4db22ece9bd867d74ab25e2bc428197. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HUA791300262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3303598ffc3a269e5b611ad6561853146fe0b27c494f05b0edefbc11b443e429. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/HUA791300317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83ad20460e8356c05f889b99414bdbc4e39b6aae05b2b71f09cc94fd85e45d3. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:28:43Z), 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/HUA791300326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614d9b5e4aaa9cefeedf0584e6ac31282cde4979b2260b480c3511499c4d71a3. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/HUA791400158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440df4ef34d1983666e86e7636239deebccf7709f28af822f8969c7e66556bcf. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HUA791100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d28bbc1cd8671a5c95954ec6110bffa3dfdfab4658ff96c0d166590be705d0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HUAMV1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440df4ef34d1983666e86e7636239deebccf7709f28af822f8969c7e66556bcf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUA791100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49aafb2757faf8a44f95b3e052617e7f72611388b526aeffcabfb33e6f0906b5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HUA791100141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66066c400d919641f87401a88c119ddceb2f6f2872347d0b9b356d11a4e34691. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HUA791700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f01207c35dbb85b981012074756305f6789ec36a8330b09fbc739e0b53696d6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HUA792100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517431138c6e1390f0808183a2aadbc72f5be72a06c70cf2c4a3958dc7c30440. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX282197132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a560dfa89af251bb6b668dfe199ab2c23ddcf9f4902bc53f4d61db6554212a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HUA791900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb3339e28c84d006dce1869775a1defcd9b712c1ccb9a791f50c31f1a39a0d0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HUA791900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0723978dd241e9267f5dc8183fe4fba2f1c38ee580fd31d2366666a71b12484. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42497635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2706372a94f778c80b3bc2e78be6b2addf086c8281fde939a8a33e7a04d6fc0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HUA792000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3359b52af28d74bf08d18ef3d1958c972a015af727e961de1f6aee7aff4195b8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HUA791900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff14a84ddce49f1893790460cd7db9e4539ea26fa393eab37c3e720729acc54. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HUA791400686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa215fe94c54b5d8945fc860c3a98bc12677eca3b0a0bbe7affffcc3100bb28a8. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/HUA791000009.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa2151f3e42efd7f670aa1e805a565f21bb9147f810a4bcf199c61c72231114. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/HUA791100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53cdd5e5bdd5a51dd0ce952b437280c046624e2e17eef3e75f18e8a28bd0a2f. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/HUA791100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dce0004ae58337882c72e380974d72e8a8bec91672cc426ac54428a183b0609. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/HUA791100145.