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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 0x5cc22bca8e3421cbe6a5012b42f837bac2c81164f5776c8414401d8227b6d924. 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/47f806e8-3c3a-4d0e-bbed-eee89af79281.json and https://artists.proofprofile.net/proofs/artist/47f806e8-3c3a-4d0e-bbed-eee89af79281.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 0xe87328127deef27ae95938efc975f30e62a2d77ff1927902dff6d8473e26b29c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:10:21Z), 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/CAGOO1879382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b382eb2eab41cb8832907c08276c6040814e4873fd59380347173938949f19f. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/CAGOO1879373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29e0f2f4f10f670bbb044ad94459c875c6070ed78de3591718f3df0419d7e06. 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/CAGOO1879379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c0d4e4a9509dcc8c5a027b24b11f9c7cd9d61a5e58a44b489a981c38aab636. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/CAGOO1879383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a9a50b6357122298672e3ea9c459e8d938958805f2fb4aebcf67f93ed04e04. 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/CAGOO1879385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff45a257c87246c0f51e900c06972d91771c6157cbd77c3964ca2b2646c2cd6. 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/CAGOO1879390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ffde7eb0c024930a50c1467ae7a3ab2d3767210cb4dbc675c16c9741641a3b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:16:06Z), 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/CAGOO1879398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7240a90906c8922200efe8dd73ff4315a254daccc9ee93609fc26f85ba3924f3. 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/GBLFP1809523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61856b4880593f1549b160c357bb7c37e92aaeb4d7b9aa60127d50c63b87519. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:01:55Z), 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/GBLFP1809526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e4d97ad5905ea6b3ae8b9b40dccc10d1a5c8853c6b9394837ea7d4e0fa65e6. 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/GBLFP1809529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3ef50a145d61ecc9c7ffa136ae835578389a80d1074ea35c84221e4bc46422. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GBLFP1809510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cb83f47b6a39aabccdd53a85b1c202f34959224162c02d72bf97de930659fa. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:10Z), 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/GBLFP1809511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c28b51afb2961e6edc42ade4ba3d674ccefbbcc7b75f4c3b20f3fed8140d76. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:44:03Z), 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/GBLFP1809514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e785ed71b366f24ff2598255d026e71603649be1873d3590cb7f22dc9aee84. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:07:12Z), 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/GBLFP1809515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267af9c48247cae0da47afd1c880c46d167b00c0ae8ee210b81862be3a74a1da. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:19:33Z), 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/GBLFP1809517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0999daf5a6c7ec3a84e9df23306479553059020e1bca5f758eecfa93dc02d7a. 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/GBLFP1809518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fedb9092f200a3d48d20f1805185b106201c529ca1f28b5be97eb88c1e91dd4. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:10:14Z), 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/GBLFP1809519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8eea9a265721afa48c4b34d70d9bcae0afc6513f25ab63df70f30da9257e682. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:07:30Z), 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/CAENV1881821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada0562f69d9bdf781015630f004c433bc783b074a647964cd3e43bc5b4fc43a. 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/CAENV1881827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79ca0cbbcb4d587ca2d5d952d38ddd40122a3f6b78a558036528fd09fbbe597. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:01:55Z), 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/CAENV1881819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb68ea6625efbe2df53be7d9fa790984a2e40f3a6520ee38a6e85c0fd9bb747. 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/CAENV1881820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025890247ecac0652788d44e4f5dfb623ab4e4b9b5bc640c56eb34b566963011. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CAENV1881832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcf386d0684e19edf61dd530aca74f9c6737d5c5d8e211624e20479fa84cee0. 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/CAENV1881826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa99521c9ae6604d11b1f4d4be0b394cdd4f327a959c73672ee82d78b7ed57b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CAENV1881831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc405aadc79c578225a1ceb2070abc94f4dd7249a1bf7c2f02ba6da3874321ec4. 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/CAENV1881829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b3fe7710a3afcba3ea2adfdf7d85015b5072bc7dc8b20a34b85d6a667a913b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:50:39Z), 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/CAENV1881833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf56fa3d121971482a3addcc21cea0f300223f3cfdc996c85cc85b4100b75338. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CAENV1881835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661ccc05d92b746de63d140f82c561cd55f1a23f5219dbfebfeec68f2de0c24d. 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/CAENV1881836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b8eafa0ba279e74be6f3c3da9e887c0f8d9bf641b608f80030283df2dc87c8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAENV1881848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abad6b3db92589a27698f6bdec5db2d58159952b7b15b9bc25f2ff05a28cf33. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/CAENV1881837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b597ff802bfeb89311cb0a45063668af6489ea3d8f1c1636addd637789dd3e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:03:38Z), 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/CAENV1881839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125d959c8f36bdbb924cd597b62089e245aa6a84e2d7cfc0cb3524fb7410e90f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/CAENV1881841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5254da58c56a6204cfc4ccd2655fd55fa3408554ee3dcbd26d55d97be8a8e5b1. 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/CAENV1881843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa003332232a8aa2d7b5801affe68e3a7936e22e36066380f9c57ac1d2f467d04. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CAENV1881840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e2f82a5a33803774f7a36856c2006f3d486a8f360c70e23d49fb0150a138c1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:26:55Z), 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/CAENV1881844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fce251f161c1d473c122d2d94fe02b1fd1be6e75f6af4719ef0dca55aee303. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:39:30Z), 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/CAENV1881845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13000eeb4428ded1857ef7099f8743b2591010d4c4c97a5549f7e5f6660dac1. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/CAENV1881847.