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 0x5c14f35f09b7b5b11fe6c94ec79889022aefd579882a8b046822c929eb9a4739. 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/e25f02a8-b7ba-4472-8589-aea20d93908f.json and https://artists.proofprofile.net/proofs/artist/e25f02a8-b7ba-4472-8589-aea20d93908f.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 0x10ab72ba690fc80891239b5a5ac73afb564dfa9fb95225a811f978a5d81cea06. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GRM010900614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08e5f6714d556f4670c9a48275e884302bc67b83d48c837bf44f5b6fc83a14e. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GRM010900616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20673c5b568507cc1ebb84c23fcc9e5586c0bcb47c11632d7ed90442aa38f4e5. 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/FR96X1938776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee436a93dd606e642ac9fe5766f4e3122bfa90d6cd53be213182deddc14fbfd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR96X1938778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6498c9be9f8ab59674acc8b53ccdcef20df34e01ea7d90f639192c1c4b81e5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:48Z), 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/FR96X1933951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f37e0660f3e17cdebb2ef59ae771ee922ebd4ba960411cf3bbfc16425f20548. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR96X1933955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd002aee713ecb235e44c8e93372207107f853ff8776205cf4ed26c6d3bc24116. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR2X42122988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4476fa111410f8176853c5c0fbb2cf1cfce157e6d82177f48e2716bcec7b0abe. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:04Z), 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/FR2X42122993.
Stou Psiloriti Tsi Korfes (Gournolakkos)