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 0xa729669075b11c977243b6112d2d6577f316c0fe650c8f55ca82a52fa1fd2dac. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c064edd6-d46a-44cb-89de-7248ebc18a57.json and https://artists.proofprofile.net/proofs/artist/c064edd6-d46a-44cb-89de-7248ebc18a57.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 0xb8499392403fd6de37dc8bc4ce9f14c02426c82c8a5e4fc443b3f45172f17809. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/NLRD52347040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106caddb98fb09c37d66511840f2b8b4012b79d0301876e231068ecf83efad5f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:53:33Z), 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/BRSGL8800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e0d11498e948c0180ce598d152e1128651be6fa111cbac94619fcb95b3c755. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:05:37Z), 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/BRRGE8300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d06694c9cf3b35c0edddc209ff92150eccd6b99fe6e6b1a878d75e0dd27da79. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/BRRGE8300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e8fe316bdac6e6ec7e1199b304e7b248d0b0e5f10087e07eeccb1c3f967edd. 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/BRRGE9801597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955673f9a7f55a2597605102831eaef9669196bd1a46d84c37383ded826fe292. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:45:47Z), 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/BRRGE9900476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5005537611d34ae0cf63604dcffd46cf26eb7d16919e5b293cdd9cd20611f90a. 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/BRD171200148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c1cece3b4c224c44ec2fd5b9d09c5390c8b5e7b2a63b9696bbe4c4d8c0c022. 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/BRD171200159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fcbedf0fc2b1984edcd8fe9d2ebe7e586a46818036c5b06fd8ad274063bc37. 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/BRD171200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d32795e2ddd4a16df27310c7ad8005c65e12029c4ad544b8500de3d8788730f. 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/BRD171200162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a451dea7b1fe60a14360478f5be0b01e2cf2f4be3798cbcd735c2f6d8d27fe. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:42Z), 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/BRD171200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954245f0e73870216afcb4d651f7364e8340fdab61304ba1dbffb13992fea04b. 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/BRD171200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d4d045bb09d52eb4387cd4e043df1855d7c6f1f77f9e3e94f844ae0caa3b94. 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/BRD171200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c61326d16e6c7c9e82ca656176e4854ad262127db4fe6a6c43be96af43cedb0. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:42:03Z), 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/BRD171200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485d0f74f65da2a60f9d68ac24646976f9d2d197f9f2fc32c9804d9d55f5e1e6. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:46:19Z), 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/BRD171200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d036a33bae40dd1b946fa695ede3720ad31910c337a7ae9816a3803a5acb0ec. 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/BRD171200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ca551b630cfdf7c7b72f82b1005daa816ff297b75c36d1f243f19c49b60aa8. 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/BRDI71300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73477c77a3b56a831039294050569381e52956cb4a94c904aad2c49dadf144a. 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/BRDI71300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13347de9f0dcfc561da82a48a77fb5ef2c0fc7b1a11b3a657f3977bb077729df. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BRNFS1010045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb3212e1a2c84aa39b1cdc530796b3a52cd371d4b20bbaee29604e3bf3caed3. 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/BRNFS1010047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf18588b4891f3c4ea9220cb6fda9a0e0260891f8fca3dc016aacf3de460e9b. 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/BRNFS1010050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca826129d0dcf13cd14b68a759062547721c90de9dd707f5da5d29ad4a010ccd. 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/BRNFS1010051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f24def5968eaeae91ae153efbc4994d927c14685445269cbf2a0db1396bb83. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:06:18Z), 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/BRNFS1010052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99b74676f74e6a90cb72bea4252b1d4ba6ae76e1bd981a660139ac60350d126. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/BRNFS1010054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedd43852610164600bbb76b3ebcbede865d9b1c906fb6bc349045f379f40435. 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/BR4KX2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d2e1b2e71b9d681a328169676a3521da8d911241ee061dac69066dbbc54205. 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/BR4KX2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf24a12b6d9d2743c158a32f75db6dcbac3b8291d48ec2740ac496d752e9bb5. 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/BR4KX2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc671591e4209b41f1202d5f2041fb98f10f4be6f52dc66fe9cdcda1136fd1288. 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/BR4KX2400005.