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 0xb1499f73275463fd19eed8fd86144148ac695a311f783ee8df8330c83a980cfd. 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/ce183202-214f-440d-9083-b8c21b9426fe.json and https://artists.proofprofile.net/proofs/artist/ce183202-214f-440d-9083-b8c21b9426fe.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 0xda93f48bfe998eee0c4d810c14137e4ab242e0798bcbf3114a7974cf07503754. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/SMRUS0024318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10fd259d197437135bd5c2f5f8ef61c917ce5120f7a6b594cb28ad889f746fa. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/SMRUS0024320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef193463e4fc77c8ea2da21c24371e0951de4a7635850c28955693311205061e. 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/SMRUS0024323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac56e53896550f1010fed86de2f0693a898c30c44da56b8a1ae8d426bc92f86. 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/SMRUS0024325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1290810d87c7541fbfa8f65b53d49b310109a2c2e830acc2e1dfefdb6478a4. 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/SMRUS0024326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f580ed9d31ea656fab348509164e208b1698c0353a25b753eec3f887010f02b. 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/SMRUS0024327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd5ffcce56a3a888d715120659220f1cf25c3ca844122655b94356495f7e635. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T01:09:53Z), 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/SMRUS0024328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6281f9ae1abc8ba6f6564a5139d2f77d03d84b72c55e053b54da8146fae557. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/SMRUS0024329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205f7f4aadd8b4020cb9aab56865becfbae3c85c95f5f1c19e46371714d91a3d. 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/SMRUS0024330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c30fe1067b1356ee38b533d6a333fce71057f23cfb7ae030edae8af81a15a5. 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/SMRUS0024331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9446784002d878b8cc582751cfcd2dfb2a757feaef4f35c7b74d92dafc21f3. 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/SMRUS0024332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cd82ca9c901191e6d3662dc8ed9429dbd2de390d1ca9cd51da20732c92bee8. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SMRUS0024333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c161def9cf2f4803a54c9dc9f22f133df260b8f4a55e27732d21f18a0c51fd4. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/SMRUS0024334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8cde2b5bdb77eba2c16e55416df916f82b192c9e72565ae9a32b980ece42fe. 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/SMRUS0024336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810d35c45421c5e6eb760af24920226ad0569079acd99a025c55f48a3cfee9f4. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/SMRUS0024337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b551c9bfc581efaf762481a94ef74b97ccaf4c832b37c1ba6e8bc420554e60. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/SMRUS0024316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e226ae407457edb178ab88bbcfe88a8cd2f422958893ecd662c84a13db204b. 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/SMRUS0024317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dc701cbc1d0312ebc84d35d5f53ea0a7d7794622d01a7ebde89338ebe2cec3. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/SMRUS0024321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e34ac696f1297b707fd1d9fc15ccd5f2bb06a146bac7735ec6a624798c951b. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/SMRUS0024324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd63ad40c6ba42559b2b080837807eb7ff8e7c7b1f30a0b28e88d1d6515fb04. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SMRUS0027106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa042384605bf4bcb3140eb1b063e94aa9ecb104a68908d0519a637a193a30518. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SMRUS0027108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995dae515a361c9026f1da078b4c4547d37647bbfb457746da4478dd97520794. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/SMRUS0027109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cd1ef464055aecca2968a98104a9141214aa2b5f472d258059a81aa952e749. 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/SMRUS0027110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730cb3fb5118b7b6673fb513445d0b7a4d324aaf7651d3ecafdde571c892d080. 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/SMRUS0027111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf6a175db27de1891f621bf9ea35016a63e5ac2e7ce81aee63e92ab85c06ef6. 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/SMRUS0027113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5073306fcfb35fffc5b8458a559677317c1cebd3cbf505f2daa35cb54e00d587. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/SMRUS0027114.
Фиксики. Большой секрет (Музыка к фильму)
Фиксики: Большой секрет (Музыка к фильму)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44878912a038f4a10a6546c474b12cf0746c2118b68f7ea3a538daca25ac834. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/SMRUS0045168.
Фиксики против Кработов (Музыка к фильму)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58654a77fbff085bc9adf2e176b3564c7cf477364391a2e13bce0d7a7cce2186. 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/SMRUS0061898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14c7ab2be613e88bf2f0c1c813346ca3cbc7865551db01a2d73bd728faae3be. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SMRUS0061899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4947fdabc9c1421901d0d585b8d325b2a2215fd0f02f92fe3f3c7d02e61f7af7. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/SMRUS0061900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cc191738bfcba27e4621bcd847a08a68358f6baa7a4b3d9131b5f49cca4a42. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/SMRUS0070424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb066aef18d06c6b471f2d30cdbc3ddc4ed521f5d7b042484713ebad6ff5d08e7. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/SMRUS0070437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66a8008fee233dddb8e742b76ac102d44cd31892d082cde9279c2f0a4acc783. 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/RUA322204077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31993e32e82133a4c73a52a3970e89b1ad3460da16914ba8a03c9688ef50fc38. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/RUA322204039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f48af0b04fe1f2145f9b12e0ac767a5634d868116449a3ef504c706b2c9437. 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/RUA322204040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe928b6cdd3b8707c160a75e67554116642e9addc703f0c5d1a35755c74cbc53b. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/RUA322204043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19264136bd31869df50ce1ba3cde7a130f0744cc0ed7e4e5779ff819f466781c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SMRUS0073539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46feffd03140030c5c6bbc583b6178e2b1e770e31882dcf91f0ac9ad026c764. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/SMRUS0073544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa895db816e480c234e60edf076bee7adf6c9009cab5a2291070e000dd2be7bbc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SMRUS0073547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1347aa0eb91dc308f50f7187547114cc795e54873d619b1f56cec14716b8fba. 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/RUAGV2307425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5def68bdcd586f6e511b32abfa286234ac02eb7bbbddc4c309880d4b1ef1c7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/RUAGV2512005.