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 0x53556280dea0901f2845198b54082b2d00cebe397a7cb633854484299f2e72a4. Chain 2 (Bitcoin): anchored in block 953670 (2026-06-14T18:07:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/589999f3-b84e-4299-b2da-49a45fdb67b8.json and https://artists.proofprofile.net/proofs/artist/589999f3-b84e-4299-b2da-49a45fdb67b8.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 0x1a232735add12cb70674d66051e8ddda3a89e05560ce0db7835e29325cb62efe. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/UKXN22589807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f3d00d3095fc10f8f41c78dc20c5e0596b43b05d48ba5b54faea3b22557705. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/UKXN22589806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec91271d4090a2bb735b4282404320a9613c422f5fece220ade53ba30619b63. 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/UKXN22589809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7b2842ccb716e74437e05679cef358d9ebaf6efb6d30c01e0f0f425253d74a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:57:06Z), 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/UKXN22589808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7d0743536b1ee3489deaac5083fd076f8b01337dd8e89a0824ae88b0bf7b38. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/UKXN22589817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e7e193751632d78d1be6629e50115432e94a56f559b2550c5b982ff90ca7dc. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/UKXN22589810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f5af725ba980d737d05f3c9640bd77053ef2c411fb1c3d472c1f6919da9a2a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/UKXN22589811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f64cd1dd903cf74a91ce772a6fc99356e6361626a85cfc089ef72be253751ee. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/UKXN22589815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfe8e91b4dae73611cc17c2f29822d1ab6afd25415b9755005b689d52fdeaee. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/UKXN22589814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e721a9eaf52e0f58740b02c7d87b813cb07b4804216bf6d32f8225e0befa12. 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/UKXN22589812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b64189623626906b123483792688dc3ba4dbd5291a1b609ffdfaba00071e53. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:51:53Z), 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/UKXN22589816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d4e50a11defec97a11f8818800096e7e3e5d83f70f3afd07a1c7501eb3a17a. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/UKXN22589813.