thumb|Emma Daumas and her musicians at Saint-Martin-de-Crau in France. Manuelle "Emma" Daumas (born 23 November 1983, in Avignon) is a French singer-songwriter and performer, particularly well known f
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 0xe50e4ef074a4787004cee29f36c1a4322ae85fc5e342c207581f54cd36b87556. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b5dee91-b9eb-4f47-98f9-eb55e6c36a4b.json and https://artists.proofprofile.net/proofs/artist/3b5dee91-b9eb-4f47-98f9-eb55e6c36a4b.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 0x6165a0eeced37ecee3abb21ca746d1bbd403e13fbb9c92034a07c606244115eb. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:39:54Z), 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/FRZ020301230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0549ae7a0096ba24be8990cb0393d522e24fe73fcc451d1256d7ddb2339f652. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FRZ020302190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3ba9052e00464a49b5a0ecf29a8e601f88798c76f647d9dfb152d78d50e80b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:13:15Z), 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/FRZ020302210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0a1c5ef7b807ffbba1202385c9b3ae3e42177e597753d5cb4077ca617234b2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FRZ020302230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1f48af0647261d898dd1c87c7069d1380e688ac4cefa40bd4bce335c905be3. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:03:20Z), 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/FRZ020302280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a9cc6c2f26d9e60d6cf88c3ab588f579d590f6607aa9a095d01d2bf8ff22a4. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR9V01000278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b79e51a1444bf8a562746fb9a5f1a5740723e8064720a57c965475425be25b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR9W12406393.
Clémence en vacances (Rendez-vous Sylvestre)
Clémence en vacances - Rendez-vous Sylvestre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57089781a062987dd3e2440d6168dafbf704cb49f89bf760325d531f46d27a8e. 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/FRX282567664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd4a3b5f3186d1e60bbaf23bc47a3aa143bafeb084869d942f4c5d27330183c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9V01000276.