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 0x4998f2a0ff948a0f8744fa6fc330e7e51b8c619c1ee7d60d1160cb3b5d905a3c. 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/0d5c69ed-8035-4588-a677-5959e434487a.json and https://artists.proofprofile.net/proofs/artist/0d5c69ed-8035-4588-a677-5959e434487a.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 0x94c95335e1da44af8a39355ea0a0f2a431fe327d1de347f8aa7b55c32e19c9d4. 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/NLS762100238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6273d72b50d520945b692b32ad6553415af5ce731ffdaebd4410772ad6283f7b. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:06:07Z), 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/NLS762000471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cffe4e35d7ac0ce0aef064fd7cda296eab8f6e7d82dada45160834866461a04. 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/GBKQU2430374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88c4541650f2a927ca066e7298c3f17ff26cb269a4af97c41f0099b81ba7681. 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/GBKQU2413062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea5e76bbda08f4e84c117c07cbd2f91d346095a00892f54be8d2811b91a1d21. 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/GBLV62321663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3065ab195b9abd0775be1e7a5d14a567c5ccdf5be7b1ff8d105147bb8e6797. 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/GBKQU2392674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6b5e8a37117fd4a510d3d4afdc09cf531f9092f6bb2e767e1ecb15d3e2956e. 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/GBKQU2376525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5030c394e21e84cd677ae08ab493e4f95c0f63663427196f5e3b2f1d3a2e543b. 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/NLS762300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c937b28e3a04634d4f4a369ab46cb50fa63b815ace5c0768665ef21adfaa68a. 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/NLS762200610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425bf2415d120caaf4bd3aa5c4d27b348ae0d11beceeebee02366e447c1069e9. 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/NLS762200569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae400e86a508497efd956dff83ccf099b9150b71b2fcad6234014c4fba7b81c. 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/NLS762200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9c56418cd4c9e023bb47a640f3105e188123ea84beb31012eab9b2421ca403. 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/NLS762200212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc2b7923ad861edd756c435e74299d2a30673e3e678e70eb2815e4d9d327104. 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/NLS762100547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf690c1423bb30f6349f29446a2d164ef719f704e3096877ea65e2c52516ad2b. 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/NLS762200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f301a7b70044509ba8ab04ed5574224f0b72bb3232429f9e5c39e90c183ed3. 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/NLH2L2100174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4ed7268c51329cb2f727cc52144bf51351733fd2f77a54f7dda2ea6f09c809. 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/NLS762100167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5913ef82246cf6165d61be748b765bb32134af710d096002771f8d6a6d4c906a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLS762100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7a4eb1d1d72c43ff9bb41a9e13916dd45b252a5d71123f457c296d72461daf. 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/NLS762000548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecccb12195292b308a2d5484740fe5424169fb4e1b952cc4d94371a2ebbd246b. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/NLS762000375.
Lights Will Guide You (Hardlife 2020 Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b744f01086301a20262e4611ddfaf2a196ea05a4e173ed8a305c02d34e5cb4. 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/NLS762000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26894212a854ddd3bce70e87243baafd98c2aa8503d9dd8e1b73877400b8e82. 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/NLS761901351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a149476b1efefd65432a392509a11b07a7097fbfb31ec0c25bbc2ae9551cfae. 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/NLS761900841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf551cab1f77828cda2bec8f01fbae66b49b0fa4bb9063acfcf4402bcb28207e. 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/NLS761900661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70c1978f12abc81c322181d2200525cb0812c79094f9357c48a746f03816435. 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/NLS761900666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8e8dd232ea2ad910ce9367b40fd3352fbf683a16fed9f8799e02b28b8bd6a2. 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/NLS761900531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c72a0dcadb34b2d021f8d3f00b42121b492a9b8b0819835a81459dd7590fab. 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/NLS761900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09770aeeaefe425bf6a91ee379b56d44476d123e0a160d5c821282160373f6ab. 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/NLS761900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a7ae01a5bc3aeebcd7a8f07740e6834f23bdbe5946db66a11b1fb8d3df8e82. 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/NLS761800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc530daec3a5d21eca5005966fa067bf35ba4d53c5438cd9bb61365a9a41307d2. 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/NLS761800060.
Ain't No Stopping Us Now / Everything Is Energy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00400a75d258209a8a64e8cc24953dc251dbbcbcbafa8a271615bd098c4c88fa. 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/NLS761700445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478dc2617623a4337117d6552f32ef972e83c06d2be2bafccb9a19f4089ce13c. 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/NLS761700529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c149f5b6eafcf6ab707695d74f46dcc46232f43aa9ac8f7730e1dad2e62b7e5. 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/NLS761700421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b2a2ae848b1c6db1341392a3106378810470182404daa51f0a790a658e681e. 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/NLS761700423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dae7d4b9a31413b62bdb55115692a736393a9dc7aba88319fe856938fb2b94. 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/NLS761700425.