thumbnail|Orchestre symphonique de Québec with, music director, Joseph Vézina The Orchestre symphonique de Québec (, OSQ; ) is a Canadian symphony orchestra based in Quebec City. The orchestra also p
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 0x0f19961766c6cbaa1ed55030d3afcf1bca8a23c0b25f117a65731ea2075864fa. 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/e51adbe5-4bf7-460e-8956-419f79fb3a33.json and https://artists.proofprofile.net/proofs/artist/e51adbe5-4bf7-460e-8956-419f79fb3a33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les Anges Dans Nos Campagnes (Noël XIIIe Siècle) Instrumental
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 0x715ec6e270aa7c6672775b995e74036081cf465cfae7740650a38dd4be9fcded. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/USA370516923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a6ade6c07bb8d4b4a092aeedf6fd7f0954bd640ffc23ea26eb6ade4984b7b3. 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/USA370516925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c66007844a3815d64c0e8cd3b3180de3e63b0319a4f4dd23f9d425474ab44c1. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USA370516926.
Concerto for Cello in A Minor, No. 1 Op. 33: Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ecd76163894d02996d9ce1b44e532274605e2564c978a55bc1ffdcb1485010. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USA561309415.
Concerto for Cello in A Minor, No. 1 Op. 33: Allegretto con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ddb5a2cb86968107a6673adb33ba416b063e65877aa208c4c7550036f3a104. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USA561309416.
Variations on a Rococo Theme, Op. 33: Moderato assai quasi Andante - Thema: Moderato semplice
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdda480974c228fa746f16f7aa13843797b76a44165462be004f92383939cb09. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:29:47Z), 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/USA561309418.
Gaîté Parisienne: Ouverture (d'après La vie parisienne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0463522fc25f588a93a622bda5e2b7107d45dc4dcd1274be29713f7df31e73ec. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAJ721875714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cddc2da6355345c5dc7c37ef9be67c2f4b25b11e5a0357b9525ddcd2e11d0f. 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/CAJ721364001.
Le blues du businessman (Orch. by Simon Leclerc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce763c91c92de011e2059ca72850d0697ad70e06518b038127c471d55c7b2239. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAJ721364003.
Quand les hommes vivront d'amour (Orch. by Simon Leclerc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cac2686f5b2d1fe2c21de7df4b44f003cc9e9a3a349b73a91b70179eaaa223. 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/CAJ721364007.
L'hymne à l'amour (Orch. by Simon Leclerc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ba3ae518644419b065bcc5f6b7e8ca57997afcf0af3c77b284a48954bd27fa. 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/CAJ721364010.
La maison sous les arbres (Orch. by Simon Leclerc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83449294ebe08df63b41756a12c3e81d158dfb7952c1329948876a028e367ce1. 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/CAJ721364011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbabc85101101fe83e9f9854c8d24c6fb6edbe9921f41965e630d53e109a0c0. 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/CAJ721369405.
Perce les nuages (Orch. by Simon Leclerc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48217378599aaf8cabe5dd39fef18431a930ec55c47a9302486d89a9ea664d1e. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/CAJ721364005.
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
Je ne suis qu'une chanson (Orch. by Simon Leclerc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd331954208d12f7e13575b7f425933ef42574839e961ffe0a20246db649f7e2. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/CAJ721364012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037ce5186bd869653903bbab9d483c3cdfdeb4a871fe8e7ed534c7bae858be4a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CAJ721369401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb7e4bd8c26c5470fc91e1bb1f823134305f30a0f7a288e80c18f178b56315d. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/CAJ721369403.