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 0xa0dbb472593aec7593c4b52336563ad32e9011f9dfbf939b431290ce55ae4085. 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/136ce7b4-8cb0-435c-8a90-8c5051f30470.json and https://artists.proofprofile.net/proofs/artist/136ce7b4-8cb0-435c-8a90-8c5051f30470.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 0x1709e8aca712510930c18f86a2271cbab72cc23438df86c22fa634c4c8c7e71a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLLT2231984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103e37de83177775ef7eda5c69448dcd6e2b8a932f7f460dd4db7b1214df8e4e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLLT2231986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc05c9121e4f367f314a60395cc6b2a204e3d9f3a8aed0f8117dc643f5c9a8f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLLT2231988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f9b112a5db0b007ddddcaf11ce24c52d0873a0a10d76b8f543d4841d354493. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBLLT2231991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b473c75e091d91cae7974fa010141ef0a461c5909133fdef377db658cffd66e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLLT2231992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea291749a07655d8ff61aadc2cc9b4831b2c59cb4797f05e18b8cf508e0b99bb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLLT2231993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84964ded0cfe6c8c97f4f5f87385495a2740c76856f5a288e6ef9478a66fd72. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLLT2231994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa535cea64c56637ce2eb2913a7a8497a1c2ef4393e2b64b1128aa5ae388c3557. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLLT2231995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd537fcc89ccb43c39a22759e055feea7cf01460e44f066df80a82e98942b5073. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBLLT2231996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdfd754d25717d9510e9ac29449dec3e63eb5c3a3d999ef40252c3e29f1ea61. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLLT2231997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112eaab26b9efd01fbea9a2f92dfb8a3e83e88e06f5fc81cf558f864bba6d266. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLLT2232193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c78c3312ed55c71e66dfe5aa008feb1c26216c577643016b606e6d5c544901e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLLT2232195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ea321723d706d9eb36d7ca09f8c937a94bd167ced8858cac2958de0775cd86. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLLT2232200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b6229d6c2dcede2b20bb56c89e1cdab332a8ae9339aa0ad32055e45e0c52ba. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLLT2232203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe129e5b91f7e6d77b1879c0157632f9219544a5a0a66d1f8beca5cc5652d2e25. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLLT2232204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7118879cf48428e75b32effb55acc398246e9c728203d6f07f40b39352719da. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/GX8KD2275105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afdf8d71aa37a43be3f4313f8cbb2a21eb11a743f8b1862f50c30692ae1c1b6. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/GX8KD2275109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a745094e539db2500dd7d972e6643cecdbcb9d00e0703a9f34871d17e853fbe. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:00:57Z), 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/GX8KD2275111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cae2c22ca794cdf80aaa6fa3a66e727759f21d1a516944836b5954708d80499. 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/GX8KD2275128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff56925177681e400886763776740e2a1fafb074a3689cdb6807d2639af67e53. 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/GX8KD2275096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d7ed9f545a88b07547bb94775dd4db6482f7a3f4f9bc04f33789b489d6649b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX8KD2275098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8326075a94fae34370cac85f791de513c3b8a9b16928a15ef7ec6158df66b69. 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/GX8KD2275107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d29372e8405ed4381fa04f8c57b65e20180eb604075840fec1d909b44c13c4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX8KD2275071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cd47283e28655ff983285e4dd5362af8cbb49db27a97b344eb0997d111a207. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:04:47Z), 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/GX8LD2220500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1e5aec04c39181260f8934378ecb65d44de5c6d795fcdeb6dfc705bf723238. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX8LD2288175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36e20b09af66ac6c784459e9b1cc3fbc6970357e263c47beb0eb2817201d172. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:40:49Z), 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/GX8LD2247942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648360515b1f2ee74320920cc2b787ec1771e7675c2928dc7124b30920139fe5. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:01:33Z), 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/GX8LD2225371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd5391bb2192a5f23fc0f281a8027c8cbc698648bfa2b09104ed557fafad27e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GX8LD2256542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adfaaa970e1a7297167c57e148b59969283ec972b35039096a4043a8c69cb1c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX8LD2203476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18df2d5fc4dc323fca16ed50cb10d2fe0c9e01162d900e8617e5bd9948258453. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GX8LD2228386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0edbf4aecaa417ce21a1ad06d86e9e14ffbf40764171d9bd6b390a71eb8989a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GX8LD2255306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a834c8e436f24e8ed2375ab85440401cfac78fa130a759843122da833d1815. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX8LD2232207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe91c0d5d37f9f8be62c24bddf8f3091a8d362170cc56af9287853a14b4eb90. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GX8LD2256007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe354aa7518215b0ffcff5ce387579d1e2575888dd39bf9dcb91301ec491b6804. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX8LD2236932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfcecc81719e41eb7a1c993bbef8022c7d3fdfa5ead12d2e577b1f0bbd6823e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX8LD2284112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187a1590dc2d8764e645e8d14994cfbb1e4d442911b170dd7e67f48f9d67eff8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX8LD2207097.