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 0x15eaba6aebc0a867625927f40ac85db985f8a8f1bf881329405397d37e422b7c. 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/b56669e3-15f7-42fc-8900-605da8a71fd7.json and https://artists.proofprofile.net/proofs/artist/b56669e3-15f7-42fc-8900-605da8a71fd7.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 0x2755f07e6f87b10ca7eea8898083f8566c83511073d72ea54f4740bff5d3c524. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHM81466947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3edbe426b13aa06c8ea69ac412630a3060e2efd8409080f233c531ad3b123b5. 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/USHM81466948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5209260ebf7e50d5f46f0a1e8b9a83507bbe1453aa9ac181a5ae0da9036e2b61. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/USHM81466949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73dbf3ea5beea08b0619b58296e2f8fd36ec5687120f93c2145669a3dc8c6e0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM81466950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0e00a6a153c735f31a9843856b50b0c0585c4c1435e807e126b27bf57e4ff7. 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/USHM81466951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdecd3472c8fc49b5d2f29eedfe21917e875a46ce77880b9d07b38b9b2df8824. 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/USHM81466952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca69e7300b45636d8bc917c287393f10c57411ce78d52513f1c5b014e2945f9c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USHM81466955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0df6f03188bea67f42551012d0cfce8cf3a9876f51c16512848ea3f7f85fcb2. 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/USCGH1718470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3add36ae382dffcaf54ea9560cf73ed1ceaf6a883c87d2ed3a9d397b8726a4a. 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/USHM81649699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6804664ccb0ddbcee85240b751428f24133f795fe75835b18fdbd18fd7b02faf. 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/USHM21541452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f463190cd6fbf60e9f0e344d66d95b42971279ef3a4479c957ec3d87c1336c8. 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/USHM21541453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a87520dc353fe6d592b7037483447b1aa6b07c87aa7a99bb8b9f1590e2e7e21. 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/USHM21541454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3f6b09faf5c01c25a42d5e88bd40122f2c55567d586964be0dbc764c8baead. 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/USHM21541455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5a714fbd8d4ad39868f899bc614e8977e2260f92bc9323b3e45c3ba06df260. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDY41579776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132f493098784cf08df337eca61d0a63fd9d0cd82b057d4551fab89f288b99ef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/uscgj1506033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae35b85695cd632e2347e2764b32cbd143f0b299cf7222a41c724848dabd8e7. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USCGH1588364.