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 0x98b6b4eda597f5c4de06d89be6e0ef79baf22880e32ec645a2efbefa89edd8ef. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e833f59-f2de-4770-b356-46a2886f5139.json and https://artists.proofprofile.net/proofs/artist/8e833f59-f2de-4770-b356-46a2886f5139.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 0x5bcafd098159ba1ea567d9421dab105eb4fd5d7070e9230212f33c2b12f1e0ef. 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/TCAJC2402755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefed90d18064562dd4fe24709d106d0c0bcdad21acf419478a7b2a745f2dd602. 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/TCAJB2496258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4880b569346677e4544522d17ef1b2ef5091966ab6dc15c652a66a6a479fce. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAJD2433188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3532eb1dee94481220897dae2c759ba788f624ae62dbc60102280ba8521ccfc2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJD2435606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876893b18d563e143f2b5abfa82bb5995437918deec34a33e267aad345f361cc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:33:44Z), 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/TCAJG2507784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614a1a55dbe9f030200500ee7ca75f0ba3be8b7cc079b0f0758fbcdc27b73d07. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCAJG2512529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e4568ce998a978fc3b5030c49255bc3b8446227ce9c97f7475b30a8b0a63eb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJG2508573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a4af52bbd49a7bf862f51ca3a07d99391a9f7dfe1b74e14d40a3037d8ac941. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:59:41Z), 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/TCAJJ2584180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34868a348364c5caa084bd0bfd324f04e5cd2de66312677536d51dcc81fd98b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAJM2557007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33837176fe84e4fdfcedaadff14d1eef50f9c070deab0faef35f508ed2c989ea. 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/TCAJO2522937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ff653c8f11f65c528a4b385790838625f8fb57a14374c7678c8a3f43fbc4b1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAJT2547866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cfca4d638fa268fa58bb26375668265ff3ba2926c7b7b851af5f9f226d0b7a. 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/TCAJU2508752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccb18b485caf2e4891905602a1265a11d6f3c034872f9eed85089e3083a918d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJU2509059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc128f2da6ad5f6674794c9ab46adb5f954268850dc325344ea7dcb89eb95ddbd. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:50Z), 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/TCAJV2509189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b43b2e22daf1db192d73d2e0cd9baeab5fc8b46f5dc8ed564bd4397dfa9874b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAJU2538892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86af5f1a0eb179d6c08a3daa68a178aa5c21642899d669040b4efe1abe3a3d5. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:03:34Z), 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/TCAJW2514509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3126b6a2ce19dd532f97ae915a8f6aa8aa06fec47a315ba12a842b0b5b1660a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT65W2570411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb901fc59c917295c9672e2a26e9014e1c052d2416e4614ab01a429bc3aaed4e0. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:58:55Z), 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/QT65W2570003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cbeb5d82500cabf8dd735e332e6e691914c8077d98f11aa572b8288e0ff7e7. 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/QT65Z2589491.