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 0x08e1ae4cbdb0c26c1f1d48ec4a2bd76dc654c6e189751dcf8c3ee1fbd316b130. 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/e0b9e9af-407e-4a37-9e35-8fc315eaada8.json and https://artists.proofprofile.net/proofs/artist/e0b9e9af-407e-4a37-9e35-8fc315eaada8.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 0x02871d5986d6b0e054661dca4c49c21399ef5e37f768d87959352c7cbff0d9b5. 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/ZA21E1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c187c96dd91106c95b5aa01ff5adb5ff32b82b0b9f62aed63614c3f1a1dce3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:31:04Z), 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/ZA21E1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8e01d8085a7f056952e17f10d512d18c1e9ca168422dc41294671ae6206516. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/ZA21E1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e3faab5d904f52d93a7b018ce337a1f41808065224d5f31f6da45f61dcfbd8. 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/ZA21E1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7d7ba4bfd45036ae3b4fdad78e3324d8835d5cfb98d01672de73bd2bb9a4fc. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ZA21E1600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f8a376b86d38ac3dd19515a516579db70f7e7fda1416c666e6306c2abfe011. 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/ZA21E1600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eebd82ae19412b31165a62371d309d3930fa25968a53baf6d6768435a3f481d. 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/ZA21E1600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2aa573ddfac3af01c0c01c72ed784a3c2601c32d97e97fce2edfa98ccc51906. 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/ZA21E1600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde574b44ba84169de8e49f751278f13cfd72c06f751ad821c84dcdd909fb04a3. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:59:57Z), 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/ZA21E1600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c03f6a7d8b981b7fb5abbd5691bee6cba4b734e5627f367921dd93ebe2671f1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ZA21E1600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6609f847fe32f67e1bbbe85db4838954a1a3282c8eba5974021473518248983c. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:53:04Z), 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/ZA21E1600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b921b112efc8de7428551c20ce10a599cc1848eae678e45ebc818b48b710e7. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:19:30Z), 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/ZA21E1600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10536253b50c0ad523d953e0240ebe52fcb38fb0d70922569079ed85507bf16. 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/ZA21E1600034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4265c596f793ffc832a45fbdea03b04a922b61ef983f2cb6cc55ac9bcfa5b285. 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/ZA21E1700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fadfb0b8d3491ce7a35b01987df78c1f025aadea07dd4e77d4f9fdba7fab92. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/ZA21E1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85e791a49aeb5b042f7ac6cd76ac03f744637ab42491b0f141ca41b1e6bd637. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ZA21E1900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6609295e10e6c663017ad7ed7a07f33c2f8979658c0ddf349b2277fc6a0f8686. 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/ZA21E1900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8837faffb3ee999fbacf15022ce8336f654103de5d89008dd6bfd72b13e53b4f. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/ZA21E1900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbde2f9b0a041cb71fa1b6952c4d4804680e5a1e3adcd07032a359ba75f1493. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:35:34Z), 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/ZA21E1900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f36c51f4b801b98005ae7cbb22ab3be70ae3c398505a6ce22b492658f130198. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ZA21E1900062.
Lig op die Horison (Laerskool Thabazimbi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cf667e030a83e9952e3bc9ab6186bcacb4564758e84963877d29da28d0d95b. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/ZA21E2100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e0b06394cf3294cf729afa8adca3dceb9755357d5364ab19a45ec4bcf10405. 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/ZA21E2300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74139b203ffff80f92cc23e1861b75beb741207c853caf0ee80fc90fc3f9fb62. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ZA21E2300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb528ff1e0145214ef7f0c658d23ba0fab2cc1774311dcd0a4641987e9416b6c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:21:42Z), 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/ZA21E2300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf5d745678e3ac5a9e53f1f56a7ac89dffd20a675d6bf58c5b2551d7895fc2d. 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/ZA21E2300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd6fe15e339420e9877a54973368b2d676a9417cf2cd9663aa1515f243f7529. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ZA21E2300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0095fefaddcaa85dd7708b4a82962cf13af8ac68999c4d9e7cd83b8ec0178118. 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/ZA21E2300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f12a66282090b346d888ae5918d67fa082b424f764991823c6466b40639e37. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ZA21E2300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404c86875f93ede59bd24accc532a83b74880aef0c130c5cbe54f64012d4e281. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:35:18Z), 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/ZA21E2300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8f0d59e48b2669baedb82e9f33045d6f488bdac2d6582eb576522f607b6c24. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:32:06Z), 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/ZA21E2300095.