1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xbb71ed930151aacd4b075c9ec24f6f85c11b52a68700f752a84c96899632eefa. 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/46c22c94-3f40-482d-b5a4-f8f3f9a0167c.json and https://artists.proofprofile.net/proofs/artist/46c22c94-3f40-482d-b5a4-f8f3f9a0167c.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 → block OTSBitcoinBlock must exist at that height 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 0xfd3259bb91da146ffe1084892adac6819f372dd68435e88933509ec2bc69a613. 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/QZHN52067602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ed510fe97461fbdea9cbfc7f7ee8a76df3b7b8cff6e9ca2426011c76c3c2dd. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:58:00Z), 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/QZHN52068646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583baf0c92094e9f44099cce81b4741f3364e23f31c8311cd904b6ddb1130879. 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/QZDA52154450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d9e84a46a430436101cc404ad53e2781cf41731de171041d520d4bebcf0647. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZDA72174525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360e2a22ea3b62d64dcb09fef87a34b9c4dc4476b09797d5fa0af11caf0d6964. 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/QZDA72174526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25da5bc7e8a34bdd0669166148fef6a3bf622876e7765bedbd6f38d75141da7d. 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/QZDA72174529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31d233a9dc1caf89c4835ddd68c39ffb8d3ee63f11acc96ffd958b048f6e9e9. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZDA72174531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e18a0e0f9a28e816c57c60172b059863898e671741daa571d9bb86ae9ade35. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZN882128788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d6cda7388bce1b81ef7684f29f48cf2009c8f6836a9eeba820993be477f3ec. 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/QZN882128793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb4483897f6c1317b0810a96517c90ee354725da94d5c7ae8496dfeac589562. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/IL6652306405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98898309932d9aabbccd32b5777e8b13150173236b7b0f0bd9fe39a281773b8. 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/IL6652306402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef93085b9b772aa6c34e205cf1b0e6c863bf04a8b20934a23460785096a8085. 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/QZTB52318353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe280f0407540e2d5ad1710a17b27e8cbbcde808714f1964a762224a84270ae8f. 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/IL6652307534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfb496c3b0c6a77da72b2a256f2c8b28698491462c1662fea6dbe841ce141bb. 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/QZTB52319433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eda743562978c91d84fb9799e0c9166764f4029d1ad63e78d61ee4fb2d75de. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTB52319452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60bfb141409e24b992459c5624ce577f363b741e44bb8385c3b91b2f25c8412. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZTB92303579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc073119e415a9c0a2f9ee6ca3e1b276e8c4871b44ce767aa6da841edf2387259. 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/QZTB92303580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4998d4a9320fb704686845aa538bf1f8b9e5225f2d51e4b462aa64c94a71e67. 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/QZTBD2330430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4878dc6f01e331e179ce842edaf98539443f45797325a120cdab8e0d58de8dd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN62415757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2f05ef643d9640e16fb456d3b835562c20ce3aa5f6e27a8198ec721f255b6f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6L2541817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a0e9d82bfd1b9acf24941a087b285519e8536e7290ffb3bc0a0281efa384da. 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/GBWMY2050840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6054dcf56347e4e46032a30fb1083333cc8fb2555eccc797292565fc0998146. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USDY42157988.