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 0x385aa7e3ad2f82f1f15c59136c8375a3a308585ed92e63360c1357b4c5a8a531. 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/bbe4cbb4-8ae6-4786-ad64-aaa58b391e54.json and https://artists.proofprofile.net/proofs/artist/bbe4cbb4-8ae6-4786-ad64-aaa58b391e54.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 0x2bc065709c679aca99b95f514edb6be159583d650211ad98867d9fbb5f961615. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/RUB521221871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10895c8ceb8fd6e6d38bd077e9906b01b41e81bc4462dc8c143d64f2f3ede33. 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/RUB521221873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9e8f86d21bd650ba53dc99d80cc7941a901523b2bff5d86531e0672bee0614. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:47:36Z), 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/RUB521221874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfdcd31b942fd6a51b3f2a6592b82acd203a8394fd5576964d72b275108d8cf. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/RUB521221875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa211500287b5ffd7e5b10596f790e2467a4f40dbdc65d1c1fdaee5fbb7aca688. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUB521221876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec2ec9e7899d57264637ed8246e687cef6a6d3a0fd434e2669aa21388a724a3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/RUB521221877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1a243fa258f0c56bb2db08bcbd4cca5d2fe0e77d919fb29883d5b5334f7aae. 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/RUB521221878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dbfc700100244a24486800ddad05623ab943de37679691d1644c095eadb6e6. 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/RUB521221879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20738c8172d44334ec278686c092f3f9ea080d8d8b6e3dc8b42b0aacd326fe01. 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/RUB521221880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf764c6fc3a4be46527825e6100cd3162fa542f29491214d82fc8fbf50bdb9b1f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUB521221881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf069da0ac4f4e63fbf40081e96a9925a5b2013235e7b0935e2ee6576461be85b. 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/RUB521221882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4ee522e174f93b8ca2571fab5c2227e4ac6092ebaffe1864cdbb746d610a84. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:50:19Z), 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/RUB521221883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5daf89ebc84c81ad6eeb5092320fff7802a4ccb67f835b137288465e8ad5f8e. 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/RUB521221862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c075aad5790cb216ac7addbfef69ae572b099db276fcc16ccca503bea8b5f80. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/RUB521222385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010f42d1334d1ed17214d769b0ac3b243880ebbc0835b5fcfe6b80d3f74710b7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/RUB521222388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6439d72e37dce4d5cf928b231cab5710ab12b8cc183597a99e5a3283ecb061. 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/RUB521222389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08600850224e62e6d251f1210e6460b1f5a8bb9957e1f448bda7dfb76189025c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/RUB521222390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63275068e49c79995a0c6290a936128ae743371412e9f21fde6fc93707d87f9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:37Z), 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/RUB521222392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669a4011d3dd87c43566a8e043885aa1db69a9298e64d5f4756b965457a36f16. 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/RUB521222393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44aefc8cb680f559ab19dd817a3126ee8013a6f48a6da95714228ce76d25c1d9. 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/RUACR2200774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861282c1165f7dafbed5ab79e94881b71759c02cc815a997023fa64821343ae5. 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/RUACR2300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3beae675bfbdb7c24571ffef5d91ed3f99f8bab5f0028a598ed5f1d5dd84569c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/RUACR2300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd754742971e84af4d694a027a9fc0bd20d15ce22caf964b9be7a0ee78f2e5981. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/RUACR2300779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0139b527578f71caf86e344d9646ade9c9101f14ef0986680cfb17be0e78d7. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/RUACR2300780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706d66405289c53885ee3c53567f3c2de55d16f06cf8f0173a46b15c82f1ff66. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/RUACR2300783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35376c07d5157d520a503b7a0c4b3083e899ec140b2af455935ca8e27eaab9e. 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/RUAGW2300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bcd7eb6fd19d1ce5913ce391d6d6f335c74fae6b154c539261c2511cbeef9a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:36Z), 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/RUAGW2300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67f9791dd6bd9c66f1a37ea5f626e89bdbf8e5fa8345dbca09119f805ad3ca8. 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/RUAGW2400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a81846ae1827da526c3f0d850a876c3c8eb5b901cbc2afa3178b0c88cee5cf. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/RUAGW2401253.