Geert Bekaert (1928–2016) was a Belgian architectural critic and writer on art and design. He was one of the most prolific non-fiction writers in the Dutch language of the late 20th-century.Christophe
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 0xc40b889427e046a4b48730d30cf30c0c8e477deb25b643a224d2b72d3c27b3c5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37a41d9e-a904-454f-9209-79e32c88687a.json and https://artists.proofprofile.net/proofs/artist/37a41d9e-a904-454f-9209-79e32c88687a.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 0x923fbf7f2f877c9f0ed04c788dd5a665225fc92ea039db44051398d31bb952fb. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/BE7KM2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd621b2b82ad8e8e6203a85df186c4a5a0b19e639132674261a1b3b26784dea2. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/BE7KM2300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b9cf8c9007d1641ce453b7b2c98ebdba6e31955eaa40380f88ade2319643be. 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/BE7KM2300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb819625756542dca99a514c810bc8fc99ad8629c60951516a3b6dc2f4cbaedf. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:09:19Z), 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/BE7KM2300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55a1866fdc1158ff8cf795accc5c9545f79c3a1df4bc0f38130adaf891f3968. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BE7KM2300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62d2aef830f64d090775b61fc640be8d2f589a5e5889eb1cd23b13dff1c734e. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/BE7KM2300075.