Super Besse is a winter sports resort located in Massif Central, France. 360px|thumb|right|Puy de Sancy from the south Geography Super Besse located in the commune of Besse-et-Saint-Anastaise (Par
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 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 0xa92f5dd94f42a4aa328f3e1cddaa43935e92429e3cddf5838a4f0955cc8e316e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afcf063f-04dc-4a82-9a5b-f8cbff56d714.json and https://artists.proofprofile.net/proofs/artist/afcf063f-04dc-4a82-9a5b-f8cbff56d714.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 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 0x3e00688349d94d66a86a83fe7412832ff691777f46e23142878f78f164db9c2b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/LVL151500930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc571eeabb729c7a304ef14465baa660917ca69f9c22bd029f54d6c7c0070e11f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/LVL151500937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e00688349d94d66a86a83fe7412832ff691777f46e23142878f78f164db9c2b. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/LVL151500930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc571eeabb729c7a304ef14465baa660917ca69f9c22bd029f54d6c7c0070e11f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/LVL151500937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd117ffbc55c30547aceb8f8066412f016538128da0aa6b53c45e98d51cf36a50. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/LVL151703650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53c24a051172decd93f7e36b55eea1fd85c5ccaa61cacb733871ecf6f67db94. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/LVL151703649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf982d6c882221effaca6c93909d1a38cd94161167f593a8626f20b613b81da06. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/LVL151703645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806c74c477a6e6657f57cc4eb5aba5f6c504194bbd278583ea14cff63c607193. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/LVL151905008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7727c44d9f4e200fd413ff999db949ff957cbbcc719ae1ca3ab39f47e6925f. 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/LVL151905007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740051c4bfe7b842f008fea17b9961bb9e41161570720f854c2ddae1dbfe404a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/LVL151905003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb47dc3463ff8450e3160b5d22c576e6f164dd0da7fe5522f28552b4d053c82. 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/QZNWZ2084649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a9a5fa974aab4497cbe9e4f1f27bf18e5fb5d3124cef310bd9fd165b05a77b. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZDA52242854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7bab196a8c57726ac471aaf3342a0404889b93ef5d8df7562e69bcde1c8a2c. 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/QZZ782490156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce088988d1e8fbe6ccd2c04484a38f3d401de8958ac1fee4498d6dc40b3d853f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTPX2374668.