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 0xec33f7a6c41db2b19d5fc4f4efe242232d3c34cacdbf026294e8247c0e937b8c. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26802ec3-177d-44f3-bd4e-a03850a8d0dd.json and https://artists.proofprofile.net/proofs/artist/26802ec3-177d-44f3-bd4e-a03850a8d0dd.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 0x8951ee47f8eed39981ee449a4ce1b469f8750876016601c9b9c46dc141d6e17f. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/SE6I32422994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f1e3537e45ec17300c30237e97d2c38e9a984877b6d5e4c5e8132059c118e4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE6I32422995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc461a82fada4d85069bb09c6952b331815d785575d48595c0f47d1abef2c9030. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SE6I32422996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d9c4daa561ca1cc54e79e6829ec46c18acbcf10a6304cb5b47f7116bf59250. 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/SE6I32422998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179e38ddf8de15e4dda78cbdb390362a5c1859a0790efa9b006a97d02f2a8d61. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE6I32422999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d0784dc0edb037f30649850c39b807c349d3d4dbea9f19bccf4ea9cf724d2b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SE6I32423000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929a485de780a3d594dfe5ec618fe6a22cdf58aef6da1832289c88daa27c3889. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZMZ92567566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bd5ff24ed86818ea23e62e19f9fafc567359455680af44cf11772a06333b35. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMZ92567567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4f7ef24b2030a3b58668c123195328e1df454ed1241e9a1522be23915d6a57. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWFR2357479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d53c27446e2ccec899fd496135ccf8a32f277a09206d459c07049c9ffc2ee3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTVM2455757.