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 0xfe521a0c7bfdfc7e8c9dfc5bc43f3d8ff003487966b8f60931bdfabb5b80ea00. 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/3fe6951b-90a1-4b0f-b4be-71ef416ecfb2.json and https://artists.proofprofile.net/proofs/artist/3fe6951b-90a1-4b0f-b4be-71ef416ecfb2.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 0x401b117b6d4d98f13f6fa64b6cd2a9cb9054dc16d5d6d652ea5c9882b040a146. 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/QZWFK2351204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e92ea937fbf01435c59f226b27544b79204cb79ef5a1b2e4f8a13f60811e40. 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/QZDA42343326.
cornfield chase (theme from interstellar) - piano version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be0e9091acb9a6fcbcc5432e78e36715a4df00cd6f2becb293ce1b8a942f21f. 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/QZDA42299927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be0e9091acb9a6fcbcc5432e78e36715a4df00cd6f2becb293ce1b8a942f21f. 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/QZDA42299927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf522b5ec4c2ed8440bbb5898079ee49c773e1b128b17ef94f31913c7cfdccf1. 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/QZDA42299928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6e5ac45a831c40d319169f1db2311a0e33d1d101ae769a6d27b5a24c4d5634. 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/QZDA42299929.
nightcore piano (nightcore sped up version)
gnossienne no. 1 - nightcore sped up version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155e6586357aa361ec65b1df427d3bcb7580af44e186c51a5f8e33b07541f0d2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFZ22231910.
nocturne in e flat - nightcore sped up version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82205d3de3db146a71471e9c3efb6d32ea294aa019aebc0afacdc057c45c0f57. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFZ22231912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91a559023fbaa52142df5cb4f9e79476c04ce2a16f766973a8a56970da4cd14. 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/QZK6Q2175050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40b70a9f4f190ce93d3e7578bec97e43c7e721319931843be3ea14f66282054. 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/QZHN62133536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66e26c9f906f7a623980a4c9565d5a45b29791756383aa39c89cf23fddabe7a. 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/QZHN92170872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94094fbfeb18a10a6d12cc5fcdfd84f9550f258b50e41383451ad201055dd113. 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/QZHN92170873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6488ecd8919d9698259da11e3c12752b14dbb7df797b00bc42e5f44d82eea0. 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/QZHN92170874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40b70a9f4f190ce93d3e7578bec97e43c7e721319931843be3ea14f66282054. 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/QZHN62133536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33e160791fbc271059ac775f3d4a5aa2e15f42ad357738a50e3c971e4712720. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZES82144936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca7dc7c668d7f1f43371aa13471cd2e7d73807535ac714dc6021b411ec002be. 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/QZES72132457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3706f0087f3a2bf7acf0106e133edde26fcf2fdc6e04f7ee1c40150a75f7c7. 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/USX9P2038874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ddf03a9d9775431501c91cc678d310ba97980aad9a787c3a34e928300f0547. 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/USHM22017414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35d46226d300ffba54407f7558ffb85ac841d5d0b667818e34fa45605bff225. 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/USCGH2035652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca7dc7c668d7f1f43371aa13471cd2e7d73807535ac714dc6021b411ec002be. 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/QZES72132457.