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 0xeacdaa1cc52902b41246d6d5d0f84ef97a6129af2a8f73ab21ef6cf9e54350d2. 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/b8978f77-04f2-4ab6-845c-2f2d78fe62e5.json and https://artists.proofprofile.net/proofs/artist/b8978f77-04f2-4ab6-845c-2f2d78fe62e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Le p'tit bonheur (Salut L'artiste / Les années 50)
No. 2 : Le p'tit bonheur, chansons du théâtre de village (Mono Version)
Et sa guitare No. 3 (Remastered Edition)
Les nouvelles chansons de Félix Leclerc (Mono Version)
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 0x20fa582d9613fd8dd0f2d32b836d499b44598997e18676cb1a27a932bd033082. 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/FR6V80025880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84409c896212071909967a56d28a75b2a78e51b8c6a7cdecfb2fe9242593edfb. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:55:39Z), 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/FR6V80025883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3b747a10a1a0a9cb79e902e7994fa2e271ab8f0f72af0c0cf88bb3657f31d3. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:04:47Z), 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/FR6V80025891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991673af417c30280131c687b94985f5d7e029cb09dca1de778f3c56e45a078b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:08:00Z), 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/FRZ036502440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf85a8cddfe8ebe1dcc59f0efcb46185af77d24b82cdb8ee670abc9fa0f75ba. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FRZ036502460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1706e7e7adf832829e56351176be7682ca2b38dfdc8a9de9fa25d3b42e7a2b45. 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/FRZ036400860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabce5aea10f0eefb10f10a5aafc03f7a5d7c9e6e2266c341163378075d2a2970. 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/FRZ035901680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98df87d2213d06b09258792a0adeac7eb406963cd18471a59f26809267ac430. 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/FRZ037301080.
L’alouette en colère (edition anniversaire)
Best of Felix Leclerc / 20th Century Masters
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554b6d828b0834964042b839a08f364c9a06398ad1030a5491135b67b33c674a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:28:52Z), 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/FRZ037500190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32e0db842efde33c39ff672a1efdb21ca19558f1f3cda33842d40d24b0f415c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRZ037901110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4252d9c577039573c661103890db1236aaa8af5c46a8d470698556903620c410. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRZ035900670.
Chansons perdues 1950-1953 & Concert à Nicolet 1964
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cc03554c1f406d226261c3f3bbcc916893eacfe83a2e54a8d88cb5a50da263. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRX190803312.
Félix Leclerc: Le siècle d'or - Moi, mes souliers
Les génies de la chanson : Félix Leclerc
La Chanson Française (1950 - 1951), Vol. 1
La Chanson Française de Félix Leclerc: 1951 - 1957, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15009d9686b19252339ba2a601159b6d97a07b238f8d2f239853822d82303640. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FRZ037500610.
The Very Best of Félix Leclerc (Le p'tit bonheur)
Le p'tit bonheur (The Very Best of Felix Leclerc)
Félix Leclerc chante le Québec (Ses grands succès) [Les plus grandes chansons québécoises]
Félix Leclerc chante le Québec (Les plus grandes chansons)
Félix Leclerc chante le Québec (Les plus belles chansons)
50 chansons de félix leclerc (Mono Version)
20 chansons de Félix Leclerc (Mono Version)
L'essentiel de Félix Leclerc (Mono version)
Chansons françaises à textes : Félix Leclerc, Vol. 1
Chansons françaises à textes : Félix Leclerc, Vol. 2 : L'héritage...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312cf9417855d2d327c6efc02777c36b7563589af5ca4acaa1fca396032632a1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:35:28Z), 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/ES58A2300032.
Essential Classics, Vol. 175: Félix Leclerc
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4846367df7c6526dd35cdb8757e16cd20b78e5f011e71f58c200f3e9514d2ea3. 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/CAQ561522003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f4369631f6d40810a6731933522930ac6c93f1edbd685288291f8dee827455. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/CAQ561522006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf365843c4989e15f1d1e7c217870c1dc55156350fa093f4b78cbc6b86e9b93ca. 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/CAQ561522007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11d4cacfcb9c60a46456114dfdb3798a146e234fcbf496275b89f1db563cb4a. 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/CAQ561522010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a004e8d445b02006472261962cb708959db0fb9d672183b3ae5e704b3b12c5c. 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/CAQ561522011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa747a4a7b935c298c1da957232306ba5fb782d7c84dbaef0f83e001edcf5dd. 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/CAEZ10800170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228a0043cca6915e3470a2179da12d0e0532cc6a351d8d1a41b745d403249b6d. 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/CAQ561522013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b8ebd099767d8133157b8623dd4080a81659b4653647c1e1e85a3642a793b3. 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/CAQ561522014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeac94223b034efcfbdea918439d898c074d88733bfbab6126acc9fc89f87218. 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/CAF420600177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceff10c3f3992090a080c89da86ac47ebc2da4afe717652db2beff7eccb3a9d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CAQ561522002.
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 0x7b2fede78622bbf2cdc2241727cd96d185772ef130deb1ab87e7cf8e050b5c60. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/CAQ561522004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb005c236395519f24ce51dd83c82970f5d84f3e275a4fb331b508d60988ad778. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CAQ561522005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0123c2e1e7eb571e115fb6d531e5ed4723ac9694d2584638023ad5636911320a. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/CAQ561522009.