thumb|upright|Crowd applause taken at the Liverpool Arabic Arts Festival 2006, Liverpool, England thumb|The violinist Aleksey Semenenko comes to receive applause after performing in concert with the K
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 0xc0ff16de481fd18a663ab062a6f879b22232aa364a87d52d7465751ce6dc5012. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1adff214-b4f7-4e3a-abe7-03001e19911c.json and https://artists.proofprofile.net/proofs/artist/1adff214-b4f7-4e3a-abe7-03001e19911c.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 0x954cf9ebc5df00dde7600a2c6ea3eff1802ac7b9483cb8eb6dbf044eebf5d9fc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR6F31235760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdeeb65e6323753b7fae3afff141b1ef937487091dce93d6cd5f89e26ce4fb7c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR6V80333239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3780d10b5caea0275ee55da95247c97c182161d3d544453c43b3a9350e49b73. 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/GBEUE1002043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f0a6386e9b01666de56b982ee702cf746898261cdc07741a2b141917d5363a. 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/GBEUE1100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cf3b0875c44bfbda1ad27075753aefd2e94b401bd934c004f987f62ecf4bb9. 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/DEP080600054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ca98d70dfba324c4b3c329d3340310c6e70822a957c0bd0ffeeba57bbdf0c5. 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/FR6F31235890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5633fd818d1574c02d566e5df0815680bf46656c26ebc1896b6e5d49bddc55fc. 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/GBEUE1002258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b51a086dfb2bc28969fca2e6ccbbeda93e2d304e3aa2d7ee980bcac4e12bc48. 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/GBLQT1100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee399fcab2b2126be7ee2154ab90bec292b18043b3513ebacd08d073f77b28b8. 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/BE6F50800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053ab0cc31aa83b7fe3d5061a79d07ca4dd631e9ed8506975b3da580b6fa7c72. 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/DEDW90900047.
I Shouldn't I Wouldn't (Club des Belugas Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea3630261b0461783e590841e1718b5cb63375b20e2df550842e5e23d5f7365. 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/DEH741201125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223e3a5c73928c3a19f6658ebff15b8605b5188d1aab19013658678e1f3316f3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEH741201119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de491522ada2ad91ddc0d3140e2a0ac92cd18007b388cd379b99d2005414c33. 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/DEDW90900042.
Allez Viens (Via Con Me) [feat. Pierre Santini / Lada Redstar]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc646546bde355a16253fb0a87777d706d6e9292128923d2f515eace6ff9ed89. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRU481100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4468f0c52784538d7c4244c1c6a47ef169a66964cb5ba8c8228f6c1b2beb1815. 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/FR6F31236100.
Sitting on the Shelf Without Shelly (Plaisir de France Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4057cff8f1ebac0ae292e7dd4e90373cbb615db681b61f88d20b92661fe5503. 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/GBZHA0900064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd04a7d91bdee97115c5239e9a1024ce230384adfb6f3cfe60ae055ae0672753. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:47:39Z), 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/FR6F31236210.
City Lounge Volume 9 (Paris / London / New York / Berlin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de0a74c97af70155cb18f61a2ebf8efd5cbd641368e464c856122209ff73748. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR6F31216010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d15115b11f9293bb4b97239d9e86c7ab3fc2587e689452cc758954766fdbe6. 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/FR6F31215820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53403ae5a82afed689594db745bc74423fb028dfadcafcc0b669c8724e0665f9. 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/ITG581100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6842dd8d3af4d52282335272573ff176d2cfc92fdc88c612670e917855edbcb9. 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/FR6F31216050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4abaf6c4b8ce008a08c664a41498c03dcf9905205b2ddb57ab8fd4d3a34a61f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUR40619601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d153f03bb4daef2283f12e0dbd57541ce2a7679a7e5932b2174f1983a0ebab. 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/USUR40517802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96de7954c7424ea6d722a9359df3737418d0732ce59f7bfe6efc07a074e0d4e6. 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/ITG580900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d17fd1d3523fbc39babb35a8d467938b3b5a3fbbd1626907ef4f7e2decfa71e. 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/USUR40516805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164da52926229eef38a8eccf8ac178b4d28da452aa82d25fd89d44a03f72a94c. 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/USUR40722101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2dc44638a47ae90e136f3c1d10ff4618b8894c357f72cf2a133c163c2124fd. 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/USUR40823801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469277cf125f062fda585e5b2780dfd7ef20daf595d6b71d9cb3a1e51ac4ea42. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR6F31333050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3ffceb679febb31e17a95067eef4d24369edd9e7579025adb652c1e5fe62a4. 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/FR6F31333060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f122c8a1ff9095bc0e7f63aa8f0539c6054fdb6fc8984f4621b383100a3986. 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/FR6F31333070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e75f1ff3a8f504a2867039c84ab0eb8bc0d7763f803688db0cc6b5868885a1c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W11216872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e75f1ff3a8f504a2867039c84ab0eb8bc0d7763f803688db0cc6b5868885a1c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W11216872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca3636eef6dd3e5cb14cc284964cce4e21801ad8173f17d9b529efb39033465. 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/FR6F31333240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e880d8e9d40c5574f932c7369ad426e1d170774fb5e5ae0db971a85fc49845. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/FR6F31333280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecea38b06e126bd98a9a0934aafc325d6b42ad8ff1c94d2f86c2d4e92889c8e. 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/USDY41820887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22852325cc88842c278c2f06a7b631d60573c557311178b7c4f8ad0d615bb364. 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/BE27E0900470.
Life in Disguise (Unreleased Track 2007 - 2009)