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 0x3a6bffedf25e1468ae6309620e469af9301662f002899bd85bd9a4b0e1370018. 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/baa9119d-f22c-4837-96e7-90cf405b790a.json and https://artists.proofprofile.net/proofs/artist/baa9119d-f22c-4837-96e7-90cf405b790a.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 0x7b9f7f707fa9692d0a13f8500629cd2cc11d6b44aef764a1b4634ecb6bbae49d. 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/LTMP31100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed150278ffcf004af07dd33a64b361b6bbb416d79a99a1248107e009974dafa6. 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/LTMP31100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcffdc6844ac0a460f5afd9478e22ebe0186b8f48f5c40030daa434bb6da73e2. 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/LTMP31100213.
Visi keliai 10 metų veda prie jūros (2024 Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356eb6f1ff1e5653f8bf407006a5923fd71c566ac73ba24febfd8fa3e40d027b. 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/QMFMF1520483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b008cb1c7103fbe2eea3b26dfdd098636eff50e49becc13071fc2d0fcd97941. 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/LTA191400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f09d3f80578d7e3e092f1edac586cb98204caba9054b8ea06fca6d878526958. 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/LTA191400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79770f9bb2db4b9acf54056d7af90508b4abea2446430ec9dfdc6b0eaecfd1b2. 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/LTA191400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d757c60ee3ea8fb45cddecd74c0575a46622efbf7bfa29fac72d6114e3e150d. 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/LTA191400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3676ad54cfe9a7a91f6aa419411e7b0804113ba0bdabee03460e199b3bd6ecbc. 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/LTA191400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d8039aa13b05fb034510039878375dcec090d0ff09490e3f7a477b083e929d. 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/LTA191300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf957c5aa336e2a6943832ed6b8c8e6fa24f511b1a0acfada32c1e7182e78c0c4. 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/LTMP31202801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd675f2244f89ce2db4bcd7fc7c3814540caf1b675e82f076adc60b144ece66. 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/LTMP31100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd956e0a98a4cda3f62aee1f27ac39329551f0c333c35719a6c75b8370e2f5eb7. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:42:19Z), 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/LTMP31100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e5a885fb85313626a7b155fbe74f2d45c69d30bcfcf208c5648846e6c67236. 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/QM4TX2435593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d88b561f301c61231d7c34240d742f17e3a324f697c3a08eadebd12e67d400. 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/QMDA71874665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540db33bcdc790bb24f08e14fa8cec707d5e55d1dcc888d6c283b83bb4e07fd3. 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/QMDA71874666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1e337679400b12253ed0ec5a9ab5c67189b6dc410bce2f7a9f7f684c6222a3. 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/QM6N22440809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ac982e2e2d776d92735c4a93ddf766213950f6310ecd246d5524f81e5d8d54. 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/QM4TW2413097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9577a20b1659ec4efe724576ae24f3223f222f30fded88d79278940f6de4bd1f. 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/QM7281524615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d1e8f6448d3b8dce983392ba6a44b4911cd865a8f9a783d6323b4f0338a349. 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/QM7281524616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fea1f59c78a40a6827001b127888fec2afc2655794a74a7178bd6f2accfa844. 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/USLZJ1875056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5801aea19b21bd7dfb60ac871f724d39f479215c4978de11baabe956f0120892. 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/USLZJ1875063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe178751a2d2143cf783f546a7fc47a348915f0091f3d8fedb49f8442f650a264. 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/USLZJ1875067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6d32dac1ff09fd8e628c5b1778d4c6c5137c157e7a61393acb3833739d9bdb. 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/USLZJ1875071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4764aef589de3af8bf1531329c50d7de3ecd74e9f4244ec692480abf55c961. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:49:03Z), 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/LTA051700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc046db37ebc502eb395cdf716a08abc5fd564780ac00480c760a730c806022. 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/LTA051700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e64f302fe892dad058ba833ac065a1eabaf162bc2ea3d64ee051a2fdd8d63e1. 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/LTA051700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcb848c327f8fd4698dc089d54ef923e39a8bf8792310838d18fdb6be0c04f3. 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/LTA051700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa709dc21561a18498a0e3168aef1be8286c6f4eb2539687d0365c6dc25de32. 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/USLZJ1875012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6e1721e910d0a5efd55a0385f7e0ed2b9db91a02f937b51982354a417e451b. 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/USLZJ1875013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3656a4161627e2c68c2236a12f108064dda04442f0c7b71b6f4f5e53a631cc. 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/USLZJ1875028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50d0b8841cce803b8fe76a4b409e860c978b9a242659184c79db7fc6fe34298. 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/USLZJ1874256.