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 0x54fbea88a4c6098379a0b248637858644f244870d0565a076124098fb0f3f227. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be7872f0-b00d-4e73-b55d-4a7f88ebdfd2.json and https://artists.proofprofile.net/proofs/artist/be7872f0-b00d-4e73-b55d-4a7f88ebdfd2.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 0x5b5effa86c520980a621fe6073e38fad1e2dc075f2870d4b9582fd47332243b4. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QMDA61821607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfe272476400d22cb2232b852463dbf96d93a74fa23d7933b8a7f75fa24ccb4. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QM6MZ1839181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27a014a28bdc21ce16762c6c95ea89763366227dde79f0f03efbddb2b5ce943. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TRBMA1802053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c295a05f8fadfe2bc8eaa967525a02b76ee5c2fd908a895a3bc62ad5b872495. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:00:39Z), 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/QMBZ91948055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47224aa3c61082350871a34b7fea4630f5e4271f5465fa7132d56dcfa05a905. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX201986247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034cd2a2705e1f3ad97279b226a9937b5e19cbcc9fa0e6365b270f6d50752d2c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:38Z), 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/QM4TX2093213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c30cc0204c2c2d99a0fc1f3ec28fab3963594c9d71ea7a425c46b72067ef9a. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QM4TX2047248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c921d92e373f63e275f35ab265c4a82e87ae1c8d240284398652c20c600eff. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:11:09Z), 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/QM4TX2063424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6da38e414f9e6e852a128a66f0c8fe0f596a42b5259f5871041910f31402d7. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/FRX202051758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763c3a4595bdb1e52ccf95f7638975cd8652a3a649891d4cb63153621ae0db33. 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/FRX282064548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef01710efc7b97ff7c543c28eb0e5bdbe7cc096bcf25511fcf629e7669193b0. 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/USA2P2104512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e888dc87490650b039a9cba4e7132f13bab4d6be987abc1d65fe19e977d8907. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QMBZ92179966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd404493eeebfb05d28ea584a193a91829541af7abbdaa62a7cb5ea105959f0. 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/QMBZ92109176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1e1a54004b45d0f2c8316832c39b59bf7efadf42746ed99160c70f7b71e8b4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QM4TW2238290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9098e1669d37e95ea267866d2f5da253e6c015e39a548e5e0e5838bad2fb480. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:53:42Z), 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/QM6N22346321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a401011c043c89772be558729dd721fc058230b483238839c2b00dea635f80d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QM7282466881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7677cd84dc0bf3730cebb867ce0941c3f25c1ec380ba47dbf8979f0efe777eba. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QM6MZ2213783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9098e1669d37e95ea267866d2f5da253e6c015e39a548e5e0e5838bad2fb480. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:36Z), 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/QM6N22346321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b10ede0f5b23652f869a3bf2aafc51df8f4403df0379bf01ab9edee4050433. 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/QZMEP2381737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b5daa51dc4d65ded7624e4dee17ad3801da606db3f1f1baf805c4916ebbc94. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZMEP2399763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c44f4daafffb780acc4bf8503dae00599bae7cbc641d54e40549f11d2383a0. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:00:20Z), 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/QZMEQ2324915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a46afc443a5d6022f9e851cfc9aecf6d50d75da69ed82ae736d2816556889a7. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:43:14Z), 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/DGA0H2304301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e729df96e8214cee78191de67647573e20645c36d8eaf5878c85dba73a99b49. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZFZ42470169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde36eef50a6972a13ada561af9772e217a4f9d13a988cd127a0c8c2b52208ac3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZDA62410135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e069e0bef19872952f379f991445bf18d9ad82daa5aa8f27d1361bc3d912917. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZK6J2541124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28a862c48f30c64144b5e429afc25bdbbfc7532710da76756a61961824b41ae. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/FRX762580282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bffe3177a4abe2ffb91409b55e0d8da85395f7cf3d2dea015699db052e5ae8. 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/QZZ762598073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa161e4689e0b2619273961ebecec46b01d9c7aaa641abb734e97842303d36631. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:14:04Z), 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/QMFMG2535866.