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 0x308c6dc0b933526e339f56affd719f151c260f30b0299dc1ea161921525e5462. 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/f9d28f83-e258-46c5-8a2e-5bc51a20404f.json and https://artists.proofprofile.net/proofs/artist/f9d28f83-e258-46c5-8a2e-5bc51a20404f.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 0xe3e1c590f2152b02e059deed62a0a273ce3b121eb9c59b22a572d84de490e597. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FI5CK1402523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c14adc1eddc446af1d1d3c86a48a0f5cb8182e491b78be571ecadc87ce16c7f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FI5CK1402526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0942c501ede80fec120a1b3996bf7dab3ce4f343f79e74307f0de4541aadecd2. 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/FI5CK1402529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9660f5ff308fe94bf820e75e7bc8fd02914ea12f750580232b2cad7a0672363. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:54:55Z), 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/FI5CK1402531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb67c2eaf0df7bb0f1bcfaed6a65a9cbc5e11d7656ad199ce71346e5c51cad1. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:58:13Z), 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/USCGJ1727559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb1d81ff4fc3fbb442af069553af01e33a1a3012ca9a68a59bd7cc12060543d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USCGJ1727560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593b529ed08aba01706bfa2fc95827bac2fa09cb4cab8e587b0bb1e789ee4565. 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/USCGJ1727562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7b2036b85f3b7a3dbe4221ba9bedc1f9024737e2a9421f3c9ff3e30e4171f2. 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/USCGJ2077709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e9edd8ce2e28299066c7fd89f906d655680663d8611412148135aa016d11c0. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:43:53Z), 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/CZA232000322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a2c7927db7c56baec796119b65a4a24346c8353f04dcc7084e60251c4395f8. 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/CZA232000323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf361e6da29936e0ae19b6eafe8852ca80968e649f7b2f4877586a9a0008be6a9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CZA232000324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39c40bc7c8d7cfa6e51d4850d58a07be7aab9c50d4a82e57385b4b1a1e1e1d8. 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/CZA232000328.
Island - Ostrov Orliaka, Čertova brána, Stratenská píla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0954161142d35a721e26c3b06291b794e27bbbb1279e2075728653b33943b929. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DGA0P2327106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15ecd29534200d8d843483c899c0c01346ae08c1711da3afe2a275d37c562eb. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:19:13Z), 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/DGA0P2327108.
Lóve 2 (Original motion picture soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab12fcad2d933c296682bf8ee6ba2f9d748b69b315e7c356de72dfbea048d603. 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/DGA0R2446618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4eda39390b18b4f547b1976d979a4f1d85f75b459ff528a503f49dbe7f12f5. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:11:26Z), 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/DGA0R2446646.