thumb|Françoiz Breut (2010) thumb|Françoiz Breut, in concert Françoiz Breut (born 10 December 1969, in Cherbourg) is the stage name of Françoise Breut, a French illustrator and chanteuse of moody and
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1efdca12a1d4d7ae9bf0f30a152e08bb0f3e3f3bf8f3b475294690b0d41810. 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/f4c99cd8-043b-4123-b77b-ea7127c70165.json and https://artists.proofprofile.net/proofs/artist/f4c99cd8-043b-4123-b77b-ea7127c70165.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd80fb857c2da43946732316ca8efec83c58e7c6c4e809843643c78e6182dc0c. 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/BE2NC2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440210fc5cc6b4177f1ae16936cb84ef78574be6f5a8ef50aec65e1e15781468. 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/BE2NC2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edf2388deae424c36b718eecc8e4135d0c39ce8dccfdd0bf47e63f50413e7cd. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:00:25Z), 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/BE2NC2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b7eaf2cc23456de28761bdd09a7f17393592795aa9d525514e3354a04741ad. 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/BE2NC2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f0cee72e64a075e4c9188b9e4ae57b7b2927ec649d5820f1df4b6443042aa7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BE2NC2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe248666ea5c3ab19247247046e41487d23710839d6ae9ce3a348a6d5c2c5d4ee. 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/BE2NC2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073970f7cc21167e5a7b91c57d478c1de2aa19b9b59404da1356c6d4a64c86db. 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/BE2NC2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce7c3d5584953d14f5704220e14bdb71d95bac8d2a88fc47e962bff6d67bf3e. 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/FRV792300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad2a146e286a01abfebb4bb090eb51a6d4f2f44e1b03d45feacd8e35139ed0d. 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/FRV792300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006c592893e1fd93c5e31c0764516dc7b8a1d82115b7ba6e48a08c4839c37398. 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/FRV792300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3803fc51ed1873f7c8b712be1c63353d7a180913a309227d3e0bbe4172a5d0d6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRV792300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7695143f52e82ae0cc622d7523d81ec3c50ee72b668439d68c9f11ded8601efa. 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/FRV792300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe507890353077be304f6cc8c94ca49f3fa5b76843ceec989b5935693d6ffd87c. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FRV792300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086a07f436b5eb42f0608f6be13f7d80e15aec3e7cf28757d2475969c1a74b4f. 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/FRV792300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc449ad91ed55d63b8f37d969827fcd0780480d7938f5678cacd7988163ad6691. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:21:43Z), 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/FRV792300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd5aa9185c7b1c1290d3a5ea2d8e4813a18496db5eb93d0683d6047c7121b4c. 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/FRV792300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c80d2030c16dd2cbab93af2a2263f491422bfde4945305e7f2b88f6e4ccab2. 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/BEY912000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f06e7c76c80aec6e5abe32e859742247d2afa46be6356a6be5e5ab9c01a928. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/BEK871500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3983edd8eae66949d91560cb5ea90231d2542136e9e5dfdde6f63248670226. 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/FR6V82181361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dcbaf12fb8e3bd543337cafb346dc309399a11ef795205097144424cc61d20. 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/FR6V82181362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe095fb49c09e6af8d6cf5dc6e56469d8b7a07c2f6414da15e74d8dc4a050551. 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/FR6V82181363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197f6e199386c155d6e911e7996c5a4750953465f9e890b4ef8a699a3e75e28e. 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/FR6V82181367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5db28219d4f33e5634f60302987b81a4d6b55c86b3b31b4be2ea60be50d3d8. 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/FRS940000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa618275cc13aede4c9273800b60083b18f8b27645f18bb0f4f5da8d8b0355f04. 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/FRS940000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34aebe18d2ca63005b54735ab6ba40d4e8697e472f8ae575894ac1a7dcaa961c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRS940000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14cc1b5cb4704d1a87fbb272db7fbe8ab739cdacff7f860e8ae091cbfc90789. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRS940000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c03e716aec43ad1f298112402864baa967868f1167b21d71575f8c9256bdac2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRS940000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3be3350b69aec1d9bef5520470017fc487276bb281eb962ce3dfac3ce82f63. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRS940000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164410cf47f8bdab7e29437f0f518a08d18ed7b60ceef9a1322d39016248ced6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FRV792300011.