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 0x54e7aad6708b863e829384aa00b50347dcfa26e149a74f7cdc788884919038a5. 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/346add2b-496b-46a0-9687-8420afba8b63.json and https://artists.proofprofile.net/proofs/artist/346add2b-496b-46a0-9687-8420afba8b63.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 0x245d4a86ff56b9be1a53a03aa1e846e509e792012992fd61ba40c675ed0cd5b3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAEF1956910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750d22fab6d3aff5d3eb9b1992f51cc2eccb72b51d7dfaf85c73623ed88690d8. 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/TCAEP1910416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2a421cbfe7f923b390fd54e8af404685fb82ff371b6a43a4ea3f168e431a55. 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/TCAFH2056648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1761b9aa67faf1ea1e8269b6ec96c65773187d42cc33505fa6942da6ef3a6ef8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAFW2121628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26f0cf4c23e79a8cb7f579813598b9faa307ffe1003fbedc83c560b78cb636f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:39:18Z), 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/TCAFX2158988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee53f7eb0691bb1870e8fde1bb952aaf60bfa0bebbd9eb3ee1f33089dae7a84e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAFX2158991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97e2bfc4913395c47d79a337b96850d630faed7565f48e544dcc06495e02bdf. 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/FR2X42289035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d2f95a194f9dbeb7de9300ca71baa2ce35b468f46d8d6133f95ddf8c156785. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/DGA062240116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627f7fa44c5341ca699b2a508959ebbb48cb53c059063cbb58acff86352efd7a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRX762393808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c5ea748befb39cf5153ce0a6dc66a7520afe3b6bfd3e0972a42988606fd80b. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/DGA062400948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce67ede40279773d5c19d1bf32d429b931962de7a002dce618c64230cb54de59. 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/DGA062400363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fb5e0831451abfa271920bf488e9ca2763b6980ea9fb85c8a47ffbfda7c111. 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/MYA112200174.