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 0x3590c508a0dbe2bfb471eebe151770bcbdca6a461f16596f918835e3c6d9b0b4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/792fdfc8-8726-4f60-8447-6d403b3032cb.json and https://artists.proofprofile.net/proofs/artist/792fdfc8-8726-4f60-8447-6d403b3032cb.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 0x3832fa3122562da7f9ea0c99b7fc918afe2d42b88dfed57a40841bcf1edea156. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ARO751000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1799fc992fb67033b501ad2703a4934225a34cd94b8df7881dd11bb10d2f30. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:29:43Z), 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/ARO751000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dd5da454eda4c2b9e49497b94c5f1f09a37723eedec1d465f8a992856178b3. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:34:53Z), 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/ARO751000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a91fd72ffcb944345701eb9c5fcbd996509447c6db5cba507ed0bc30d0c353. 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/ARO751000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bfe02af3cab0a0eed693f85e5e2643da2420331bf3b8f4f79a37d7cb04c476. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/ARO751000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2437b1d6d34a85039a442a4e8210da7b8c73290fc03be52c6842bd36930d3e9. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ARO751000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e641d8545f6a855c9b701685ec83b7f8f891e71243fa9f40a36427e0c4f55b2. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ARO751200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fce55c633e29dfa9178c411a323c3c9ae3dd7ea85b68098f19b253dde87cfa. 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/ARO751200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefc3905b568dc785d895dd3844f8396fdbae9e02e5e8c6a189087dfb112eb94. 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/ARO751200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a79c08b01119c212b1e888ee4b1c517e44d99cd37ad0b477f643e74d0dc834f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ARO751200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8de6e43c7d25cfc5ffd8c7a84a12930fc299160d0794b72a827c2d8ee4ee48. 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/ARO751200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc2fb95626f907820d443f9d34f5abef276d6c22a8be84fe2ee5fe1dd9e8558. 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/ARO751200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64df368ca1de4ea326ba64f96e1db31bac2eeec0d2cb9cf8b57173b3591aa9b4. 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/ARO751200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3405ba7be6f8c73cc015629d23e209958bb3a49461603a79ce028eb745bf5df. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:31:53Z), 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/ARO751200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f0983516f34f91a536cfcc1d9fd3960a433c2c85464899740657d57c237c1d. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:57:07Z), 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/ARO751500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901b70b4ba64613c681b275bd5343b876ef7dfbd10ddbfa52ccc2dd0031a1512. 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/ARO751500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9829c89d95c550fc5236a71567e8cda8332984e9efcf09c2bfe9d9ba9c203e1. 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/ARO751500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4900e5cfabcd7758c335e2fb85222481952b631511bbfa27c058ded9dcbc5621. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ARO751500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0f9a61920a766e9cfc6d5dfdba3870202e71af1a57ba473536f412753e3fde. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/ARO751500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18812214f19cd30979414f1debb8c2d18977aa546dbcc074fa20e8f77cef3268. 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/ARO751500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bfeafeaa2053c745cd2132bb843bfa3f5becbda76b1ac207a332c51665639f. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/ARO751500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe288d02f3ab88b146a735dee784bd13b63fee7e25ecd1f27e5e928f0334ec79. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/ARJ401800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197a6518853b7f0ee03b1f14ea8d8f812f9932420260faffb7b8bcfde13215f7. 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/ARJ401800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f4fbdede6073992301428d00741e37d8763874d9cd58cad405aa8c8880a06a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:04:44Z), 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/ARJ401800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e1e1e5ffa7fd4b4800216214ad788fdf64493d3ac2a2d9e852761f146e2b6e. 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/ARJ401800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ea1bb60e33d53d725fa86243e1f37736bea7623b4450cba92c186098f6c70f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ARJ401800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cff5abaa1f743407f4c262bd445568dcba63cd1a690c47a7ef58812a1be414. 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/ARJ401800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a60e393e521ac73e444f4c53e2652316a83bf9f9f4ceffab6b7770cda9033d5. 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/ARJ402000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af7e9a314c74eb13c4279e290fb9e106302eccfb075e931e1ebe237b462ccf1. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:42:40Z), 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/ARJ402000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae93b3a606a94c0f2f1fa765d2112d3aa01c7082892d6a4da2fb58f3b34faed4. 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/ARJ402000022.