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 0x13b5832ec67c5fedd6811d93d54b2e751b610ca206b54c524a337ae9dfb8e44e. 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/76344ce4-ed65-4aff-8afa-0edc70d9ec89.json and https://artists.proofprofile.net/proofs/artist/76344ce4-ed65-4aff-8afa-0edc70d9ec89.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 0xbabb95c199f914bbf03ffe98fbfa2220270b2cc2b8468930ebbacc9223045d8c. 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/FRPBL1603980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0af8d13f8c8c5dfb1220e78e33483197925a360cadb860c092eda859dcd9ed. 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/FR9HE1800240.
Spécialité ivoirienne enjaillement (Viviane)
Vive le president Roch Marc Christian Kabore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e399d3df6ded0d140b03d047605be74a607aa60b5e28d18c2691ff5278d0d7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRX282074650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910ad2ccf92724bf5d3f70f4ec90f49873ab670a218dab30081105c237534b4e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZ5FN2550648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287019f1425f7ba4e5a14327790ca69a605c8e3d8600dcc35d608ff1f2d50210. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/FR9HE2404670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64742e5e12db17e269d194c371b6da26446a1c9bf1d4b0b5e7eb8642c386fab6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR9HE2504740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ce258ac2a184cbc9f33b61bb7f74a07f91d452e429cedfe61d20ca23640231. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/FR9HE2504760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34504a0f775fbaf530f7c29ebabe7815b1bcc36e82e98769fed47636142d5c27. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR9HE2504800.