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 0x3951f1dfe3006f5c7ddfe3dff8619555c3329231cb80b76b4550ff5b384912a4. 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/735a7a7a-c5f8-49ce-8b7e-4c7aa9c9fcab.json and https://artists.proofprofile.net/proofs/artist/735a7a7a-c5f8-49ce-8b7e-4c7aa9c9fcab.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 0x6bfe37e7e17fb0cfc0ba1703afc9676fb72ca947215bfd3a5c2d94d6b2e0a022. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/US83Z2108832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfe37e7e17fb0cfc0ba1703afc9676fb72ca947215bfd3a5c2d94d6b2e0a022. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:41:41Z), 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/US83Z2108832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b35374b6c42596513e27dea8b7756bc71d9cf3e75f494e60bf816d3c94c2079. 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/CYA112000907.
Symphony (feat. Yann Menge) [Extended Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61915af3423926ff4a88d7433d890aa12035cd4205e7aba32f249953147dba0. 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/CYA112000910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b35374b6c42596513e27dea8b7756bc71d9cf3e75f494e60bf816d3c94c2079. 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/CYA112000907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a952f4bfded0d34b75acf1ceeba18ab5304048a63d20b09ec038f23f1782063. 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/NLE712100733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99081dfafcc7a586239f1f1f36ed792eb2b58eb8368e57fea8cd38ef67f68eb. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEEE72201626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54ee5fe43af0e8d91493355da2bc13b2ff3c86acf29749a9c8a868a1f91e80d. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEEE72201627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c179944cf92c4fc77b26e78a686b2999e126fa15737e298f1a99c27151f14a1. 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/DEW872207358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855bbd8447c3daf4c7ddb4a1d750b8ee7b8e8f64230b36a8b489286290cfd6fa. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEEE72301718.
Forever Classic - Nick Schwenderling's Pianoforte Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e787aaf3220353f198b4ff96da0d32852795cfdb24a3d449a6742a2e3d32177. 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/DEW872402136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4123927c0f639773e57491d0b5746a84283db5b317217334df612a4223868961. 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/DEW872402134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e96ff388312613a63dae50cb83e0c51f3909a827cac5f2a169aea4e2847af1e. 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/DEW872402135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228a19866eab7253c3eac9902c3d8dec5708c3f3e4d7c7641040a331311cfeab. 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/GBKQU2423749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219ecf8cf0a330b24c6b573a09114489a812bb281b7c046e27741bc95d2e73a1. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/GBKQU2456378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ef51596e9fa49a309877fa74d0d2f209ae6b512e4f41ed88aaffa09641fecd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEY472477828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd868e15b32884bf757e6527e7f3a5a574016e9c70b8e1b64a81bb51c80a0eb7c. 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/UKLVE2401522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5e98fc6dbf8706cf6d05cd5469e615c1d821580d238cf2c20fec247e8dda41. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/UKLVE2401523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc859cf202b0851dc99652b7bc5d084b290906dd92c6907ae12364959a9448b93. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/US83Z2427188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acc040b8ee1b804c367fc875501e7185ff0d6948c4dba2750f3cadee02290cd. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/US83Z2506980.
Living the Dream EP (Incl. Remixes by Jan Rosenthal, Noøise & Questionmark2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1d74fb206c12214b24442c409f4f990b47a892635aa483550920d189a5ea90. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/CH7812547628.
Get Down - Alar & Korolova Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c3de12bfb6c258a864cec7aaf7a965d9354c43d873032b33325ff08c0025b0. 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/DEW872103546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd001f7597e6a6b0281de96aa2e733ea928826aa6155b717c0a59df75beee683. 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/DEW872103547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b348ce6933d7e7185b86b27fef5f8d07de5c29d50d0d3512aa7e676a9aa77b. 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/US83Z2130120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3138a1c2610c02c4ce66d06ddeff43ab50da1281dcf19e155635030e91081bf. 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/US83Z2121385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d7b800c4788c6d800acb6aeaec64f86d52b0ea1d21ef1d07c883d3c283638b. 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/IL7532313045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf945bf7c2bb6de0e96d5a64783183df3925232e6e74f677a0baa099fa0a21599. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2133752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17665f15bc9c2dbfddeb32abbd2f6911a9765035dd0dad8cb59957ea2987192. 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/GBJAJ2101800.