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 0x43b6e765c5f45918a3afabee19ca9e2be8decf59ff7b3cc64c64cba222433bc4. 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/e4933703-766e-488e-84ac-34c6b314c98d.json and https://artists.proofprofile.net/proofs/artist/e4933703-766e-488e-84ac-34c6b314c98d.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 0x361a4659090e77bd280a03f618481c0da64acced8950a3e7ef9f38488440d058. 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/FR96X2327823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3de9cd2a4e9b5cfd4228b772d3a73aac497bac9157b6f52068ff6e3c912df2. 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/FR96X2327825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0d76351b0777f793374533ee70a2a73bf0e02d54e9156b181e0bd1d47080b3. 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/FR96X2327826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03b137e44e317ccc2d3a5e6ae262995464ad0508009fbc458c617d5acfc165c. 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/FRX762065732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dd5213a1cc8379fe7006042f41f21ca7dbaf91089db4bfc8fc43ce3d5e2b28. 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/FRX762065733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441eacb53c55ee988c7b55ddfc579e835a540968c1e33ad234a8bd9f2ba355ce. 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/FRX762065734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a2db248717a35c96eb09477c9e1986b703fba3bc8fc79ee3d7f8428a8f23d7. 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/DGA0P2338433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4064cc193dca9db929ae12a8d4c846f0661e8201365f9f737698509a011b9d0. 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/DGA0L2382107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908a5649868fb4ba7eb67124d0eb36868c99fcb33a9ee0768f48dc78bd976282. 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/DGA0M2322787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8477f09d76fb06b9e9a8d0cdc58e3f2f063cb84a573fe75100eae7f0246bff2. 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/FRX282262036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fa81238d9089fc26902a2cc916b5b0afc4339b40db62a07a4e23e7313c9d9e. 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/FR96X2257268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb8ae884194cba2965b046b724716ed211266774e8d33be995fa0c9d1a6c003. 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/FR96X2188787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c989f839e93cbf2eef816a583732f16fd2b141a24303e19019cc139a18df494. 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/FR2X42175325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766b97da87c102c1c324cd8b35bcc4fd2d40da476b4d8679ce925446351877ed. 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/FRX762433183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0624e39030c0f969e971cae1ba67df9dd4f5d2482f85fc9a4a604e05223d6bdd. 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/FRX762433184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e1e9b657700e697a2ebc6484b05cf45db4726722299d1e1ea09c00f4ebb3f0. 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/FRX762433185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b59948f69758107e5d0568f4f1f9f556d8ac9b9945c179c0dbc2ee6b6f34ed. 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/FRX762433186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84557878196ba4442f13891dfce20b4ec045922b9467590e5a2bd566b80f772a. 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/FRX762433187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc999f261ce00d0b58b37ced3777d3657321fa2d053f48a2f119c67d4c12b3a90. 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/FRX762433188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ced441941c5ea5409f85e7b116d43ec602bb2e09fa024d477471c32c09f6c7. 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/FRX762433172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d73314297554df323a4de73a565caf646fa7193039b90f46128c09af51fe82. 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/FRX762433177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ac41b18e0de681c139a556f57119a4ad6c975a8f65198267b8b6f9e3e726f7. 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/DGA0R2490929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d8ab189d00fe9ae08b9dd0d9d77e7eafb0a028c7e5edc44d23cea7e38942f2. 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/DGA0R2490930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad170cf962fac24909f4db701cce8faa0e742b2f1130a4c76266385802eb70de. 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/DGA0R2490931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4ed3af2c8b302ae81f0d800f1f12654ba58769521585d89a66fa3aa7a622c6. 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/DGA0R2490932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2ca20c1223befd9110d6aceceee5fc6d9d63600445a95a689dc4e3a7ceaebc. 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/DGA0R2490933.