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 0x5399a29417bda7f98f0aaeba880183b2f422aadba453e206413386c6fa57bbe3. 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/a1039bcb-ff43-4c0e-8b34-77d3d38ec60b.json and https://artists.proofprofile.net/proofs/artist/a1039bcb-ff43-4c0e-8b34-77d3d38ec60b.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 0x4cdb0b3e8d7e6d549867ca612ed7b58d8e96598ed6ed1f2a935f9d676f74cc60. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/FRZ368400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b84a6f12c69d9040d703dccfdfa794a4c48bacf5030d8c08de58b81d7d508f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:16Z), 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/FRZ368400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9889a58bdbe87f4eb66d5a0e41c705761686df44422e76520b0df09606c90f96. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/FRZ369000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fec576830182407d765eb7b960aca8342ba1040439b0e68412aa8687ff92333. 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/FRZ369000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61fe6b746abbd538da22c9784b6f6e724b418caadd2f2ac6749c9e4486b3b00. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:08:37Z), 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/FRZ369000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10587aad99469b0b1224cb54bab700c1b3047b856c7c8fb9eaf2a1ef46c4fad7. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/FRZ369000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910cecda3b1e287b14c387e893d2e390228bdbd562101347a1d3e0f0c102828e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/DE05Q8900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a771f9809b90a9bb4ce8a7a657ab7b7e09778675cc9011baf884998e66ad48. 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/FR05Q8900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf546f76fda05acd9fdf6b82363e711e92edd128647974920c39a6804d517ac35. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:00:55Z), 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/FR05Q8900008.
Cantu sacru (Chants sacrés) - Polyphonies corses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b04f13ede50c2215becb23809e9d4a1be3704aa6c9c0a014d05a57168952b4. 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/FRZ369200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b2b46f29484d9831c588ffabe43691dc239b56bd00139d3b1b597561077589. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRZ369200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a46d240a64a264bde171e6d8f1ed4817a8ec55472d5256e8adf048fbd57bb53. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRZ369200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8444e074c8ae62c73ef0ef7777f9078fd7156e8fd2c0dc0b6527b8e2595609d. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/FRZ369200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9577c61169f3b6271ac5f9a10c7759c1592f6154a55de004787fec4836adf6d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRZ369200105.
Cuntrasti è ricuccate - Canzone passione
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55736640a1ab39053c4e15035f607ec1814b9899359d31180bf1349a275fb8b0. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/FR05Q9800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c450ab70ec56d8f6f303b30dc4970efb561b717c1ccc7494aaf1fd60daf7d4f. 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/FRZ360100111.
Chjami Aghjalesi - Nant'a U Solcu Di A Storia - Esse - Cuntrasti E Ricuccate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4673d8ee2d45598bde7b4903d79974e9603c738373418e2a65f7dd5ac806c1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FRZ368100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb08c64b40c9a574c70a9b365203afef519177cb182301066c383c487a803944. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/FRZ360100127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf018a5cf6c894906920e8b7693268e068206bf016fc770437757475c3d92a350. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:54:42Z), 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/FRZ360100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9889a58bdbe87f4eb66d5a0e41c705761686df44422e76520b0df09606c90f96. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRZ369000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274dbc8271b69514f2dd71305a6da4f8519735548c9809a7b42fe84635f32b54. 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/FRZ369000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49f9215f34f469c76caae1dc8d39bcc65b174d64db76a09474a9882ff2ceb97. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRZ369000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8444e074c8ae62c73ef0ef7777f9078fd7156e8fd2c0dc0b6527b8e2595609d. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FRZ369200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01de0200543f9d1384c1129e66b40fc0f67989e3271f309ee414750ff3af7d3a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR05Q1000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9577c61169f3b6271ac5f9a10c7759c1592f6154a55de004787fec4836adf6d. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/FRZ369200105.
Chjami Aghjalesi, la collection complète de 1977 à 2017
40 anni (Live au Théâtre de Bastia 2017)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a990e9bec05a80b51fd79300960fba5dbae7a34d051379089522d1017974b14. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRZ362200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6436092bb579b563768203fceb5f2851fa66cc943abbe888c2aa73de1e3ee000. 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/FRZ362200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed705a91e2f2de88880ba8d449600606045bab002984a990a3eb3eb3b0470a86. 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/FRZ051500443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ec6214a7fa97f325ecf4a859154507b3e91094ee4afe89a3c3f4dbd0443892. 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/FRZ051500441.