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 0xb7605e7bba6e96ff655221f14e054291a4c39b684e4e9e6e2d8adf3a4c3fea29. 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/a6f27542-9a64-481d-8718-ae8cb5086ddb.json and https://artists.proofprofile.net/proofs/artist/a6f27542-9a64-481d-8718-ae8cb5086ddb.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 0x10d5a79fec142bbaac478be2cfa08e2f969b5629f35249eb55b36dd9857ddab4. 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/IDA501600109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78489760bacc676c301d77d2213d802d047daeec19f4a41770113207ad18da33. 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/FRX281951560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ac70f9cbd6d5125b829048b867963f0b1b91921af325f67fa2a7eae669899e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX282079618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4285848ea2b88c05719302110797c6e19b4a0cbcf12a05ce64b7f235960e80. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FRX202183687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79331e4053f0ba143014f3a54b80288ab64e07c30cc4a9bb50c452999327f231. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX202183688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41855a4a017313090e59ccf9627861e2fd0b695d938cbe2c7472b091fdb43ef. 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/FR10S2080097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f90048d486aab1ee72958aee6ad3d909636e7dc94088e4a3b04ddb54c4dd96. 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/FRX202183689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbcf5f1183177a78376fb883cc792fec49de80290da5f49cdf36ef3c56b0b81. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX202183690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb14f72341905f208288fe3b0ea2d661394ca20c843356863aa5c2fa42fb2f6c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R2037453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dc2b91947fea30c4bdd2b7c8b444452d7c4309d81e01c9cb09fb2b4a3bd6a8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZK6Q2370777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d94ef169a961c0abfe0064a2fd73a54aa1660d594070b28fcf0656083324d7. 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/QZK6J2343011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fed0884c62dfc0e06214d7e601ff6e0686961fee258b38817f022b1a309b41. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZK6J2343012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfae6cdaf8ae16302eb13d05f82212d37502634a3ffcc11ef1ffc112c46817b1. 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/QZK6J2343015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a16d9228fe9d7b6acac50463c87526e6927c00a5316982eef45d685a748116. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6J2343017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefe4e4fabef89462d3e594f496ee2d5258fede4dc24b4641cd29c19c8ac8247. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/TCAIU2485702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5767e9c0562a84fbea9a5d01c05165d3b64e00362bf220fbe30abca4759e928. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCAIM2450893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefe4e4fabef89462d3e594f496ee2d5258fede4dc24b4641cd29c19c8ac8247. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/TCAIU2485702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a7fc5606a363b80f8e64cc97c563dd6bccd2f191d8d618c759444379ec707d. 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/TCAJQ2582627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a0a812989c64970d5b664f7f056a3762e79b282ddb5f94d2995fefcf512458. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJQ2582681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd998045f42d3bce477f643f25b01c8dd697a3519f21f8c117226ae3936eb2f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJQ2582889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eeac89a2333eadcf7d2efdf6c623a27e72caa3af09c84930e8090d456b37e76. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAJQ2582919.