thumb|right|Hatik in 2023 Clément Daniel Maxime Penhoat (, ; born November 26, 1992, in Chevreuse), better known by his stage name Hatik, is a French rapper and actor from Guyancourt, Yvelines. He w
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 0xd135bf67452464609ebbe50aeebbfe6d04f8aa9f0ff5bd4eeea1ddd61d547846. 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/2e637bfd-345b-4769-b42c-e9a976959f7e.json and https://artists.proofprofile.net/proofs/artist/2e637bfd-345b-4769-b42c-e9a976959f7e.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 0x43780715122d1f456d9069b5b77320520e9d3d5582851518aa7bea1945b5516d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR91X2020300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28073d2576dd6de8d99025919903398770b6c39420478407e3f7c89f8e3132b6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR91X2021900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3bb14ee1355861fac0d5e7cfcb387ede045f375787c7606b5d59d7a9adeefd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR91X2020400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218ff8a020d46a4a0cf1ccae627e92913240f25a91aa7cba5b3eaecf0d540746. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR91X2021800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9588913d7905e65c0d313584df42dbf99e5ec9f27756bf0bce0469f353cc572a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR91X2020500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d2d65c3921cbdb960c41b1d7063ea636445b611881ed0adf7d9993b1dfe528. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR91X2020000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936678d9affc6cf0e55e39f3e52450003ba45604975484b4840780b99962b3eb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR91X2020600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba81f36720613a305fafac6b7727ed4a49dba1b96d75bc11ca0d687dd9109e2e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR91X2020700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdf4cd54a4ec505a948ff73aab1b17d0de9abb2c3323af922905c775c92ddb9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR91X2020800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d521ad9a11234c0dd4bce21c423de24ebbfcfd673c4780e44ebd82def6788f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR91X2020900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd964ba180c691ee34ae45d3bddc5de5df187c3db31a29cd825056fc8ad15c47. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR91X2021000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdbe3971699568a0652a5e5c89d5189f58d61bb31b14693bc31f14374ff67b0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR91X2021100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4ff038fc0398ce639fbfc9ad45d8bc4af39389150c373bddc1bcfdc2639e58. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR91X2021200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaef44bdb1187117cebcd3373e095aecbfe23789cabeb314bea50ab2133bfa9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR91X2021300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec124039cb4cc44e35b2127ce51a4dd3c7f85053f9285fbab0ed5fd411c880d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR91X2021400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77620e5adae7425e8c54bf6662ef7b37b2dfed71e100ea1675a7b1c3e177fa86. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR91X2021500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3086ba3163bec9503c43cfffb78262b3ce41c79d4dfcf11a497ee24878697272. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR91X2021600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc61ba6cc28c927bfae00874731e1c08388d23f597c86c827ff29be8f0cb432. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR91X2021700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb26306ca4d99e893037c0432ca5c03ee032ace21d867744eece64d26f487dfc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRPZ92307290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83119fb9a82a724aecba7e6588c94a2ebcea50b6227b7bb4f26646347b5742c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR6P12200150.