Simon Leoza is a Canadian composer from Quebec, whose music blends neoclassical, ambient, electronic and jazz influences.Josée Lapointe, "Le long vol de Simon Leoza". La Presse, May 7, 2021. He relea
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 0xbaf460edf30c66581b8b8f77db4e00e67047021e22220801a563ff4c3f2bd46a. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61b45b43-5c57-4a7d-8646-0129a3d06bb4.json and https://artists.proofprofile.net/proofs/artist/61b45b43-5c57-4a7d-8646-0129a3d06bb4.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 0x14ddd4865fa3b70f27d00cb487573e57b73890d4559d4234ad9c3efe693ce592. 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/CAJR72300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06874024c8b8f15871018a39b22fad37140e75ff6b9e095b5c68aee42468a165. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/CAJR72300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7912085304aa721ffb438ad142c62190db297ea583cf63b03874d45764193f. 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/CAJR72300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81747a0b70d1834ece4ae5ad054b57de6f066b78a97737314e5e9581050b63a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CAJR72300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed698849f6d593bcaa8d197bf2b818f03f1c0b7d5be60d43ad14f1a35ade41a5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CAJR72300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8764f112e075e3ed2b99b971352e27fa531aa63c0e2927c11eb4d8dba5263f3d. 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/CAJR72300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762a9de55ccaca5f32e7359bc1b22b285854f8e8e01e92b0f7a142f424929636. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CAJR72300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d17a6ecabe9d6bcf055fa5efd043ae11727b391c7787df7644f86c8a3c7fda4. 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/CAJR72300033.
L'enfer d'un monde (Bande sonore originale de la création de ZemmourBallet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5714e246648d5f49eb19eb220a148edbf5cbbbc67c8eba6f33f9350522991e1f. 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/CAJR72300002.
Albatross (Live à La Maison Symphonique de Montréal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6991c78383923cabe2d11cd394bcc71de45227df6c34df089eab218392f5976a. 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/CAJR72100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63efd7ae5cd4e1bd1fdce28aa4e44fb8749fa697f1aed2a12a5dd6f71963031. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/CAJR72100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73817aa6beef3f609ef14de6d824a43085304e763dcc0764a932b01a350c65e1. 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/CAJR72100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa432e2827e67902d70edb923e66f3e41fab873a8e9e3033c16be45dee1f0e75f. 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/CAJR72100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b867ad128d8f8119cb1131b9817782b8f6d27476288e20c7578e75b53dc3d2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:59:24Z), 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/CAJR72100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2fdf6e6ef16cccec31c3a1278e640ee4cd4b4c1fad8e84a5efedbcb1f48e34. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CAJR72100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4299ed4d3fc9b9d68efd72180ec854b1a41637628c4f7b99dc04cb60e9b232. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CAJR72100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7912085304aa721ffb438ad142c62190db297ea583cf63b03874d45764193f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CAJR72300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7912085304aa721ffb438ad142c62190db297ea583cf63b03874d45764193f. 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/CAJR72300024.
The Escape (From the Short Film 'Invincible')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762a9de55ccaca5f32e7359bc1b22b285854f8e8e01e92b0f7a142f424929636. 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/CAJR72300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe92664141784bea7df6a7de6b0eb3a806fe41f01c7592440e5832030aace113. 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/CAR722275017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa432e2827e67902d70edb923e66f3e41fab873a8e9e3033c16be45dee1f0e75f. 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/CAJR72100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73817aa6beef3f609ef14de6d824a43085304e763dcc0764a932b01a350c65e1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CAJR72100003.