{"copyright_id":"0x2bbad2855a1e86d3cc954a0b9bb46a862372f25e24af6bb7b2c5aa1615f7e1cf","name":"Harding University Concert Choir","registered_at":"2026-06-12T12:51:31Z","symbol":"NIM0303205","token_address":"0x6fb29f18c19d84f6b7a8a5beb2787900bece134d","type":"artist","uuid":"ebd2f32c-ac86-4c1a-bafd-dd7f6d9381e2"}
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 0x2bbad2855a1e86d3cc954a0b9bb46a862372f25e24af6bb7b2c5aa1615f7e1cf. 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/ebd2f32c-ac86-4c1a-bafd-dd7f6d9381e2.json and https://artists.proofprofile.net/proofs/artist/ebd2f32c-ac86-4c1a-bafd-dd7f6d9381e2.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 0x727fa410a1497d0617c09c87dba9a13d59925ce778ba41ebdc737a5247b95a14. 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/USMZA0810267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcf7be4de1c694ceac8ba300d8e0e9b6774145088d0d7186de565ebcf890828. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USMZA0810280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8efa64b92531685d5eccee4586c87f200f8ef3c24a587c7fc720dbb532cc21. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/USMZA0810301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcf8dc0fd0d29081e25726cce9a5f33d87690a49bde5f09ee53fde6cc9fc016. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USMZA0810311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14931e4f7d0ac88c193eb572fb6ebd7aedd3b04ce744515d6ceecc6039d24901. 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/USMZA0810321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f61cc8b34c97fb3edb8890cb998a779ffbc0f9689946229e8d2011dc9edacb. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USMZA0810223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfa13bf647269e235f79711071d0c3dbc5f41652c54a97873f208c6ce1b40db. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USMZA0810232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115a3770bfad6ade3723fd6e891c1a0c31c3d2c1885337903424eb048b2bc43d. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:17:00Z), 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/USMZA0810245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e9b48135f95a46da268145cf5763d54cba19416fad2915311b2348f39fcccf. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:35:27Z), 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/USMZA0810250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c6e04f7ecd7b0b7171f38cfee64fdeb789391658207a0ff13d60c4e41a4662. 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/USMZA0810853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c4570b5c28897a3b75835a3d253d63302a5ee8a9c54ba650f9a41ef8fb5be2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USMZA0811769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf510d8c86221adee1a0fee6e28f74970587e8bd38c6cc2250b5e602f1b1e338a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USMZA0811771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283e6a97731eaeb24020d30e43792d942fc509e91c449649138a7de9ee455737. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/USMZA0811775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edb29b43f107e9353b77fbba4dafdb529a1739951b98f286d656f4da826c75f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USMZA0811777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29da907f416fd45a643deb34dcf6829f6f014980a9e17e30027dc3049431c976. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USMZA0811778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68c2154d3ae36f4934e9c37fd4b752864191d12215bf2849489edbc0c10d1c1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:19:01Z), 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/USMZA0811780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18804b61eb62c199c10bbe2e6370b9bde85ade6d627b2407ee1f642363c9eb0b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:36:45Z), 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/USMZA0811781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643158a91801bbd3e6c5ac29775be2e5f4447aea32694a131d298ac3fd68d85e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:53:23Z), 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/USMZA0811782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f420a6a9cb938ff7ba6f2eec101c8dc4184261124b825839a0bc130b6424d6. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:48:12Z), 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/USMZA0811783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea8a5806f2fd9cc4ba2012f200ab9989e26156e133dc258a93e3ba76c5bc3da. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USMZA0811788.
Songs of Fanny J. Crosby: This Is My Story
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c002fc49c4a6d23f8cd36524be7164fa24ee9f9027d2e8b703a52449f778771. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:08:58Z), 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/USMZA0811692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec467a718cb9752bd9aa04fe6a6f433a809d9dd539c0c6b27a992367cf5c9dd. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:32:58Z), 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/USMZA0811675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1831c5ef5f9fa9d477802a83877c879208bb3584a6b3067935f6bd3e3fdb21b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USMZA0811706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38271235a17946b64e925054992282fc045d7a1e4f6c8005638552d3a7ffdf9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USMZA0811690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a0215599e1d5b6de0a36c428d5cb90d95dd47b3cc0a75398244085cccf3c33. 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/USMZA0811624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249aa38501c870681f233cd7cec5c10b6c9d6a2ba75c2c8ec77b36de34c6862f. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/USMZA0811627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1be1357d6ea8a23917035118f6e4922f70201ae5b8e5e1fa64b44b560989e70. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:04:46Z), 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/USMZA0811631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc521c09bdf056669798e8296eabff5db96078462b3ecd04ad3e3a7483f04e80c. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:04:07Z), 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/USMZA0811639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1035301b618724123515ed016f5028c1d359f53876181c070273cf84e4cf6040. 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/USMZA0811641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee521c75f427262f13881917e0cf583bbb33e344d367bee815253dea942ed93. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USMZA0811644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9842d90eb0bc73cae47150722a66dc675e7f191c05eb02c5bcd8d7f2e9ac66fc. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:07:01Z), 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/USMZA0811646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7026cde057ff9cb92fe62c770dffcaf927c8512c5b22009e933a4c3fb7cabaa3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USMZA0811650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfca77ec4b9b43e568bf3c3b5c7ccb6072c3040fe7812322769e93273bdb57d. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/USMZA0811652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29adf8defe20ce99ebf45d9d59e2253137c03854f9fc3744c1505e8376d38088. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USMZA0811653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2d737cba59d70882f91237114db11b7f1d63cf1f37fae1b87ca761d1405e13. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USMZA0811654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47878455d9f4106313b68e34f9b551b848515ba4712dcd9eb75fc9e9b08cf07. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:52:43Z), 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/USMZA0811655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3472f1fa0d82a8a5ee2afa30683ff6c31028fdeb50d74d552fce4171e8153f3e. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USMZA0811661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b08b031fd7b073a53b50870f43dc2b55778b8da5a7077deb211192e8175c668. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USMZA0811665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e90d1fd99b35bf1d3f2f76d93931f2007ff031e6fa727039f11f721de43aeb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USMZA0811668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969bd18cda9c63c2cc09f72e55d61ff063d27f4e9ac95e49f2e990169aed542d. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USMZA0811670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f25b3b0e68120d3c3bdde5536558fa1229bf66cfeb4d16be6a8fed4de1a5963. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:52:06Z), 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/USMZA0811672.