thumb|right|250px|Gilbert Pounia in 2006 Ziskakan is a maloya group from Réunion. The frontman is Gilbert Pounia. They are one of the most famous bands from the island. The band formed in 1979. Their
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 0x400bf6eaf8fc0f5f8f866fca76eccc7cbfb0f7357340bd84c51351ed3de6c3ba. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ff65a5b-373b-4c58-98fc-0a0699cda916.json and https://artists.proofprofile.net/proofs/artist/2ff65a5b-373b-4c58-98fc-0a0699cda916.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 0x5090c3a908c7ef3585975b8bcc530fdf67d64baa37303789bb7efa54adbd67b5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR6V80855563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cf5ff06e2c5751b3a1b15d4597be0ba01bb086172c9b5deac14c5ca115d487. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR6V80855564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21c49e567fe2d914d3516b8489e64eff6aaa5c4e128acde68b5da15f1e4c7a2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR6V80854866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178b5edf490f9fc82fdcda049f4ee96f19fbbdd8e8cacfbaa1a160f077596c94. 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/FR6V81161340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4e1f9419e2d46acec4cb754244577568b662c315b4a0a9e95ab0aeb89bf13c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:38:20Z), 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/FRP3B1200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878b0e6a84d7c609985d770f0f45140bad43c1770b3e7eafdce3caef8bba82eb. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:33:25Z), 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/FRP3B1200061.