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 0xa709d8502aa4d9fd6dd4339b81ecdafceb04a6a0178cbfc17bbe0ae9877b11d2. 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/834aa905-ee10-4288-bca0-8c18795cf930.json and https://artists.proofprofile.net/proofs/artist/834aa905-ee10-4288-bca0-8c18795cf930.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 0xbcea1232f908813a9415853542e7c423167fe6faf60404386959ab70486f7153. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:02:43Z), 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/USHM21342846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ee04ede149998de0b0fb282572deaa74ad3c0966fba98a25f8ecbc1668475f. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/USHM21342851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c2cb8f6e997d43826203b066880cc86a6f7452d90ab23301e8c6183ba8f7ba. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USHM21342852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1995a1409d110001c7c14e41c9bfa3e8342bca6fcb38a0e6ac9549ae8bbf3be. 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/TCACH1533120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a9a52726a78ee7f4df881e63e34040698efa8e467a97b3e5884eb0399b5096. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TCACH1533123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcf689265b1bb73ed525ae114c9d40869cff4e7cbf238dbeaefecb9a96b4347. 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/TCACH1533122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26adf14c290b9412861ebda127a73f7d404a6c26c87853cb2722c07d3d014c21. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/TCACH1504308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc803eaaee77bdc6f51a3c3edfcb3710408ccbb040ecce1393e359fe35c231d9d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T13:53:11Z), 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/TCACH1533126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bf9fa7bb631959c79ee08cd3ca6886050a0bf899110a7bbc5da74bb8cfc5b1. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCACW1753404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08a09d73ed55055b5b04bba59edf9f3232353791fa721e5edf1c926aef6ea57. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/TCADK1746985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e674e389122c2bb8922767e91ca74dff3eb74b4f394a7984c029bb941dc5e3. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:07:26Z), 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/TCAEC1987892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8342fbadfd30d6b188047de139a9967ebf26fe93a7fe117857b15ee6f0adf450. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:34:27Z), 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/TCAEC1987900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc34d1d87f42589dc0c0554197dbb6b7194b7fd2fb499ff9a4cf1b14146ced1. 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/TCAFR2117031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd3c780fbc636b86334cb2782b67455f29f5ee2b3b7f2c17893c35e88a06df2. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:10:26Z), 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/US4WJ2021229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6671e485c3aa4289724acf48334512d20b6fc4b2be6dd8fdd38103d7f65ec4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:05:17Z), 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/US4WJ2021231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2666d897a48b13f5a6d7e814e83382d8f8cabd6f5df3246f0aedc64bcced56. 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/US4WJ2021296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bac831e9cbe35917d8b6761e05aa476f685f86dcad7e4592d8ef45b86e53c98. 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/US4WJ2022415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3ee13c21532cbbfbfc0dba5f37b9319255e76c48e4604effee02c25254fe21. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/US4WJ2022491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4fac557d42f60f46b2daca0d9fbd37169d97b0d44a0a55d3dec0dafb118a08. 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/USHM22157257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856a40acaa171d905a072b5a859c7ae6565876877e6ca3618b07f0a84b0ecdce. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARJW61700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc516c0e9a15d9061847214bb8d4d6f2c27252d299252db2556c46a3e14cecc84. 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/TCAEJ1991813.