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 0x02ea722b73022a152e2d30d0411fc45b4fba7c14828e8951d6231369da34d73e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/494c315a-5bc0-438d-b424-355c2aedee80.json and https://artists.proofprofile.net/proofs/artist/494c315a-5bc0-438d-b424-355c2aedee80.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concentration Profonde: Musique de Fond pour Le Travail
Concentration Profonde: Musique de Productivité au Travail
Travailler: Se Concentrer et Être Productif Musique
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 0x4150ca68a313d9b9f8863653e4899eeeaa045f5c5f955dab6570bb6e3299dffe. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBRKQ2361762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeaef0804f5f4cfb90827fbcbede872252b9e3b0c3bf73b61399effe5a2fcfdf. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBRKQ2361765.
Musique pour L'étude et La Concentration
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6b73093d58ea2082753cf8c8a5e98a08a6ea0839a72e5203d914f9ad024a80. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:51:45Z), 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/GBRKQ2361767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787e18f3541cd8b9e647346ae2646bbf39e181b875f5f60c421b34adb79b0c72. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBRKQ2361774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3965bec39d8747699b42bee2a54b1afe05ee7628c9d4e3d1ec98c3c1d32b2324. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:31:49Z), 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/GBRKQ2361776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02594a91a159f6b7b4bcea609c16a3a9427916e100a976d4fb50c5450c91585e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBRKQ2361777.
Musique pour Étudier et se Concentrer Sur La Lecture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14658d18abb6c848004667bad4acf0c183765a5002c14fff261e73c3518d14c3. 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/GBRKQ2361790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c90d793f3bfc0b6b0dd78eb48d243b89297f483e2b6161dc2b916b87c9b16bc. 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/GBRKQ2361791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48007787212516c3674ab17122f6445db2fe23d06c44d5b8aecd53cc8089fbe. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBRKQ2361796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781369abf62a282e1b987d1b9e4896f784b353736b4b4726fdc228a65ac4c1db. 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/GBRKQ2361820.
Travail: Musique de Concentration pour Mieux se Concentrer
Le Travail: Musique d'ambiance pour Travailler plus Vite
Focus Musique: Musique de Travail Relaxante
Étude : Apprentissage Rapide pour une Meilleure Mémoire
Concentration: Étude et Musique pour un Apprentissage Rapide
Mode Travail : Musique de Fond pour Aider à Se Concentrer
Travail: Piano de Fond pour la Concentration, le Travail
Mode de Travail: Musique Calme pour Aider à se Concentrer
Temps de Travail: La Musique pour se Concentrer sur Travail
Travailler la Musique: Se Concentrer et Aider à se Concentre
Musique de Travail: Travailler Mieux, Être Plus Intelligent
Musique de Travail: Se Concentrer pour Mieux Travailler
Musique de Travail: Mieux se Concentrer Musique Productive
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d84abd1c2a93f114f690d6d3d616b7889c2938b1965ce4ec6fc68e332e2e31. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZTV32486660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaab07647416377fdbc50119e8d8c8ab0050cdab81e3fb8fe97715bacf6a44a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTV32486668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1e9cd054041caadaeae381fdd8352094a0b0545482dd800bfc8d1438169711. 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/QZTV32486670.
Musique de Travail: Musique Relaxante pour Aider Travailler
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8f450267f9e776e85bcbad574b7ad877c490cc06ec372a74e481d8661ef0ef. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWDE2425027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5304f40c7533e8cd17dda540cf81550de4ba41ab746d6b0159d797907c146d11. 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/QZWDE2425028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12df99443f162cc648e55946c1996544258a3c4ebed9464c6063e761c294b791. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZWDE2425029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4585405eae03a2dd95805f5a2a8db6f1f32612bf0c0d91b67b6b23352e121d. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZWDE2425031.
Musique pour L'attention et La Concentration
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f32c40064802615103e46a48ad6c77739ffaa299985c043471b0cbb3e20bec. 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/QZWDE2425033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43382d5c69eaee32443c4e8176015cc0411264e41a2645bb61ff7db1e0d4256. 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/QZWDE2425034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca90a939dbbb3929cafe891238cae722569675059b6adbd008d146812710536. 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/QZWDE2425043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b8ab8d810be75ee0b932dbcb750a08e5159cd2a036b0c914529dae06ea35e1. 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/QZWDE2425045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73259dec1946ff7f09182a42d87b217d18cc716dd4b79e559225255bb1fdaaa. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:56:39Z), 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/QZWDE2425046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79184ef63b527b7647f14ddcd6fc2dacafbc7f746a734e87b549193d83fa1f67. 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/QZWDE2425049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a67353374b898c05c55ebf8b18e064802592a7fd09fc276f0fae9f0d7b65b8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWDE2425050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dbc1055a055b6f4c446e5d9171366cc40cec43cb9556b0b2afe23d15f5b860. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:01:26Z), 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/QZWDE2425053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304aef53666253cd54ad9cc6e11b14139a9d9730a253152b57eee8c9046564d6. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:05:23Z), 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/QZWDE2425093.