Louis Ferrari (1910–1987) was an Italian musette accordionist and composer who was active in France beginning in the 1930s. He established the Ferrari & Son Ensemble which played in Parisian clubs. Lo
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 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 0xdd56ab4b41311cc9b8190fc6bd9557afda23d0ce0ca6ecebf459752dfceed2ca. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81b75859-0a6b-47cf-9a24-e5f9a06c8068.json and https://artists.proofprofile.net/proofs/artist/81b75859-0a6b-47cf-9a24-e5f9a06c8068.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 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 0x00edbfa30c3f475ed9b267cd2487168341190b4ffdfed3f752f6d25ea374a0b6. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USSM12005296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3909335ee4fef5e621d92e5c7ba5eeb27772204b7322b2344fe1779c4e8d1b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USSM12005297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8c382fa7161e51612ccdae31bc4d2c8284f700db694afb91e7b6fbe4a4ff84. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USSM12005298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7154a749cce75adfc9b18bdbc8244dc06c77efea3860fbbc6c03943b0325fdc. 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/USSM12005299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc56255703679c84ae83c36b96feb5e3ce5103f62232d9c077ba4b91e27f9b0. 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/USSM12005300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778f8e7cf58701694640ffe0a453e7461438d37625f8e73d90a5b3cba1724f70. 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/USSM12005301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c41b88b45ce5be451cdef5af247a47dceaea96296548f1bdc7feeb41fc9104f. 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/USSM12005302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060a22d89272e92a05e2d4a2b1cb680cd123d8ba8c87202d1fa9342337b15943. 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/USSM12005303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e7add7e0fde0721e0233be3c5c5f9fa99fc13ff31cca6ed76fc30d1553e268. 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/USSM12005305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64291531f742369b976fa03cc331e75226031ea33529daf193f6f23d1530ac2c. 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/USSM12005306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd038a4cf84a4ef1286e532439e4a53d4d67a95bd0bae06b00378594f39f351. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/USSM12005309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9d25f0d1d55dc2bf292ce754c47a7a55a4926a9b5b11d9fa5657fca52ca9d8. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USSM12005310.
Les triomphes de l'opérette, Vol. 1 (1930-1944)
Collection Dansez le Musette Volume II, Tango
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fab577eced3504b9aa4533c627fb7d7b31492e510cb8cfe9ba5e0b36189a385. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FR0O70814640.
Vive le bal musette ! (Les 100 plus beaux airs joués par les plus grands noms de l'accordéon)
On chante dans mon quartier (Collection "Les archives de l'accordéon")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eff86dd61ea2921d27d326f6144d6bff5a2e8ceb4fa87c8639625410802dfd9. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FRW111100548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1530c990c41fa77635e7a407f7c5e047faeb03de67b60d78cb90af8bf5e5fd41. 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/FR6V80831324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67821b5f55e9264ffe0499364fd47e56ae57eb27ea1d5adf90f2ab237bf7f7bb. 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/FR6V80831334.
Musette Music, Musette for ever, Part II
Collection dansez le Musette Volume I, Valse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65dbe240059ea1c1bcc63bdab2381932c60f822cbef43032fb2c2602e1c05f0. 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/FR0O70815122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b62d9635ada20132948789537351daf5fd13e0e70d62fcc6ad299e30ce5d9e4. 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/FR0O70815124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90ff5fdc80573d8980b464d60a9f7795f676ecb96f087973e8bc9b0e5672ed4. 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/FR0O70815125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbe5b9c285fec1a01f992c2be9d9064979b1a6b0dec25b202a620dc6e2261f5. 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/FR0O70815126.
Accordéons de France (Spécial 14 juillet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe75826474948132c413a01359a29bfacf9595b5ccdd8164fb19144c997ff6e. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/FR6V80144154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd0b5bd2e9126d6d235e46df40ad5e07adc4d36dc94f80d4b136f2be9ffeeac. 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/FR6V80144170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a92440b8ca30eff0251ce14a3764eac5b670379acda6b9a66b1de326a74ee7. 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/FR6V80144156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60d073c4073a1f03a9f4e91ac310e20225696865e0d71f1688753f3fd074254. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/FR6V80144174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd24fe208ee551a4d2c528b91a029fc850cd730dce41434b5641fbb70d4c5b2. 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/FR6V80144176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c17d16633fa7683a570025092d8ce9dcfad138390ed4956bc0ecb4a89dbd9e. 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/FR6V80144177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf600891cce3dc3fd231472878a40d9fb08118801f71a54cadfb8b179466c22ee. 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/FR6V80144178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0fda56eadbd1ac0b711b101bc20f3e30397a9cee009a622bd392e30140750d. 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/FR6V80144167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf119bdd0a2c6fe1add5f535f0353188013e70698296aee7bd0daff6adbc7cbbc. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/FR6V80144168.
Le micro de la Redoute: Présentation d'Henri Boudet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220e3c410fa94abb1591323bc9fe7a548982027d113a702a1c59a078100ae0c2. 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/FRW110701308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e97f6b93b1dcf3834a30df16e68a94da198bb4107c84efa47bd2b42958443bf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR66V1003394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485b33da03f3d361b4af8a6f829d8486f6add6e2657c7c67829fdbe7580b463c. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/FR66V1003395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0844db99ee06c1229c11f0006f63f5583fffd5ede8da5e5043c5ce9a35803152. 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/FR66V1003424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f09f7405aae60273155ea0bc71b3fc226b4b3fe5f5ac0d057b56c0b966dc20c. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR66V1003414.
Les plus belles valses musettes (Collection "Accordéon musette")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a16cf89cf4ff0b8f8fafb8a0aad74f2c5d6e18441351000d9ed200dc78bdd98. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/FRW111605032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3cd7319f09bab7f922a789ea14104073b41dd6053dadcafeeec2d74e4d2ce9. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/FRW111605034.
100 grandes chansons à l'accordéon par les maîtres du piano à bretelles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d7ed1b8bd6e39e98ae8f55f376c83956381324edb298b0d624d7fc8ec5b97c. 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/FRW111609071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5c43928bb104a1be6428cc8a630f913207c5b027f488c422a621860ec1d3e0. 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/CA5KR1551907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca1f0685bde20643b066c1855696539081611400d292196d84ca83cb5163119. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CA5KR1551914.
Accordéon, vol. 3 : Musette virtuoses Paris 1944-1954
Les plus beaux pasos musette (par les meilleurs accordéonistes)
Six grands de l'accordéon (Mono Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38f167f0d69ec1354e31e80d49b2503a762605864375e823bca7efe25c60acd. 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/FRX211707006.