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 0x6beebcb064cc718c71a3cad40d51f2c5b09e9004bb1db0ca8d817bbd43ef55e8. 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/9d2c786a-ab10-4085-a895-3db6662cd27f.json and https://artists.proofprofile.net/proofs/artist/9d2c786a-ab10-4085-a895-3db6662cd27f.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 0xa7ee2a50484e5692f7c471deaa1be2a613125a61f74cf60e34bac984d689cc47. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR66F7400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae235d04b8d3d6ad5c930ef0534c9f15aecb7ffdc1cfab8dd5f630e41e798ada. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:24:34Z), 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/FR66F7400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda28918df3e21b89ae848238b174eb563ff544459f30c758cb1b40d5bb78f8a6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR66F7400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e42dfb6a2583320dd1fb54e8348888c767f5c1835bc21e57749da295ad8421. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:04Z), 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/FR66F7500230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48f114da19a85a06f802562b5b5c1efcab12c06f7d19667432043b11f68c3ae. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:54:50Z), 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/FR66F7500240.
La fille aux chansons (Marion s'y promène)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5046ca44249cecf649ac51a5bbbcd4a37ed986f3a90230d9f1207b465cb7b5. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:46Z), 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/FR66F7500250.
J'ai vu le loup, le renard et la belette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1470c190d8130a16257ae7784bf214da6b56058148c30a04cfa3649878c0902a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR66F7500260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4794df6987068ac783f7133e50b2d8fe7193396de3199a0931a7652a4a69e6a5. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:24:49Z), 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/FR66F7600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c92182b38666ae9af6b01939e0dbff8c81e2437110fab01ab63d6b6508883c6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR66F7600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e37f36c80d3084b5cea1af9636872a74b74f3757a1ec69dd99efc7a6ed0713f. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/FR66F7600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f285966db284608b0bae685130852debc0df3de08c4173a2a5867dd0d4a9e32. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR66F7600060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed29c1e86ff5a3992fee5565f94cddf4a08f3cad03c9ca81ba3e78f6b81b9a0. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/FR66F7600080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18ebd45f7ac61a0855ab7850e4782beb1ce1df88a37e1a0eaaa40f38c059ced. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR66F7600090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a1a593f6489dd4bc9b0c026b1e7fe03db5b793b13fe26cad0a8019e09a8384. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:02:20Z), 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/FR66F7600100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1000799c5cbfa7543b4391be195ada25488bfe7da87d09069df1b6b00c5b5cf5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR66F7600110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226516703db2bc7bb6cefa7e590bb60b3ddd84001f07650425a13547d9c402f8. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:18:46Z), 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/FR66F7600120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1365df53da7d31a7f07d3d410000d5d73610d53e026fa401c22873e1a490d5d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:53:17Z), 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/FR66F7600130.
Nous Sommes Chanteurs De Sornettes - Gavotte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82837baf92e3b0ee95ff804110b3f9636f04212203921fc5fe1286fe137a4fea. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FR66F7799900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040bc789e1c8d6c8515a08a036276096c359e8c6f93ae544d36118ba9fdcd95c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR66F7700720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4c21e299f77ac17b9be62071a05554a51e73058848dc65976d5d3775cd05fd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRP567900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e8de6dd4ea4bf4ff6a70a53638149e1ff9381136dd6fb271273d3e3186fda5. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FRP567300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6338ad4dba59f25d6f6fc2d6c00b93cf51e9776c50c97843886eb2b6f147a266. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRP567300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31170a47e5ad5bb3a0c3b30c32d96fd6221f0b96dc4d04a8f9dd10c25592fedb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRP567300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c9a2cd322e20e21fd17670f72f39403d7c58528f0d708d2af06e8c7eb0d6e1. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/FRP567300070.
L'extraordinaire Tour De France D'Adélard Rousseau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852e45874cedae85ea64ad5eca4b86803f7cd52eb3d704a42f6bca02e32645bb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRP567800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe530fb1c090405da0f8ca19455bc6d94732b75cb486709574baca97aef1ffb97. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:54:33Z), 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/FRP567800090.
Concert exceptionnel aux Francofolies de La Rochelle 2010