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 0xb79691f9b12aa8fb63614ad6355e767abecea3d447e26c66161957bc8b76b045. 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/ba294687-a084-4428-8a1f-53c0f066ccee.json and https://artists.proofprofile.net/proofs/artist/ba294687-a084-4428-8a1f-53c0f066ccee.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 0x8a3f773cbd88457ad6a2f52d1582ecd2a3b0a827384197ac1d0621e966459d22. 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/GBRKQ2102661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8727f1e2d9485e823db42aa44f807ff3a753e47e2215d78dd969483d8dd0dd9. 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/GBRKQ2102673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c9da562006f9243390b153cccce3ab73f74f543eb8af8f470deb8007f64a0e. 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/GBRKQ2102677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bf32680a87e0dde726fccbe7fa8b640911bfa9149235653c6b875c72d9480f. 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/GBRKQ2102679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac66799131017ce8c81ea5a5903ec59e1fcbf6b90374feef8cfc806cf88166a. 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/GBRKQ2102688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7382bcda928091b2d2070e83a6e05a45b38e5827f88742f5052692c45d0d574. 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/GBRKQ2102690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8bd9c4f45d42b2061778cb1afd5f89c17a095f6dd65326385e54d198895bbe. 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/GBRKQ2102692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c92ed00c77c90966c8742ad80c781a7d37bd7d9edbf5bc491c4824292eef73. 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/GBRKQ2102696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c03d35ad871c3a948af935afa0c7310607339313f93cc3cca9936d28abb568. 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/GBRKQ2102702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4801605730176ea6e3a781a96e4bfd52aacc0283773a511c0febe55bd1391ff7. 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/GBRKQ2102704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f0d19f3d6959c0c2347a720597218de3a3aad71f37dd5c31d733d147994b48. 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/GBRKQ2103641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fe89abb2a4d40bdc068019c76f874a8e5cc4761c70685ca3e24a6a2d1966d3. 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/GBRKQ2102725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01962b0591172534aa76d576d142579e7d8f1e8e683ab77fa634d393daa3fb4. 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/GBRKQ2102727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8856e77adbb7481ede193b8f08dfbcd7dfd2a68800db821cfdd451a921c434b0. 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/GBRKQ2102757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afa151e126c6c4318a147727f647950fd4711ce6c3e0fee204165e92900d919. 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/GBRKQ2102760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfc741fdfb8bcbb6bcb7a90e10af0bcf3269790db36c3a63b4f99da22f88bc5. 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/GBRKQ2102773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1e9658ad8d176583bdc85e4747e9c8a53f735fa430004aba7785896e5c862a. 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/FRZ835500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5e36989fdadc6aa36247e4c1d1211ffe310136d60db2aea8c76165b9efb4a7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRZ835500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcb03d4a9765bc847ea1289ee29a64f9d8a419606cec48ace82064c212f119a. 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/FRZ836200211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531eacab68bc678f874e381f46a294ab28ba9b5a6c9556b7f4878b7eb0546f7c. 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/FRZ835600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebd2f265be33c7e0980b30087194661b074e0cfd4304cb442cb1f39faa63133. 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/FRZ835600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ade2f9d9d013e1dc3f60ed5f98e3c2c03256953fe3f68eaebf0a10f166b1e5. 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/FRZ835700078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649c27453d8b7f95c081c793d1ad686bab9fcf2ad8d8fe0e4dc8cf9a0b309d1f. 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/FRZ835600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd082bd6e57e76182be9619e945ba367c62b9bc413e5974e527a257b2d10d6d. 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/FRZ835600026.
Les années music-hall : Les Quatre Barbus, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3019c8ab6ac61438175e1cc60566e0ddf7bb2a6ee0060c7ed281a768d1fae6fa. 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/FR0W69994500.
Du Music-Hall aux Années 60 (1950-1960): Les Quatre Barbus, Vol. 40/43
Chansons de la marine à voiles (Mono Version)
Rondes et chansons de France, deuxième série (feat. André Grassi et son orchestre) [Mono version]
Récital à la mouff' (Live, Remastered, Arranged By Tritsch)
Récital à la Mouff' (Live, Stereo version)
Les 4 Barbus à la Mouff, vol. 1 (Mono Version)
Chansons pour vous et les enfants (feat. Fred Freed et son orchestre) [Mono Version]
Chansons de marche, chansons d'étapes (Mono version)
Rondes et chansons de France, première série (Mono Version)
Rondes et chansons de France, vol. 2 (Mono Version)
Le parti d'en rire (feat. André Grassi et son orchestre) [Mono Version]
Ivanhoé (feat. André Popp et son orchestre) [Mono Version]
Chants des grandes écoles (Mono Version)
À la claire fontaine (feat. André Grassi et son orchestre) [Mono Version]
Les trois tambours (feat. André Grassi et son orchestre) [Mono Version]
Le roi Dagobert (feat. André Grassi et son orchestre) [Mono Version]
La Tour prends garde (feat. André Grassi et son orchestre) [Mono Version]
Chansons paillardes (feat. André Grassi et son orchestre) [Mono Version]
Bonjour allégresse (feat. Jacques Breux) [Mono Version]
Vintage French Song No. 133 - EP: Chansons Suisses