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 0xf7edf9ec47ca19e43b2bd3afe25fc5610160e9f7679d792e36a394f239393c14. 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/8c235e0b-a01c-4dba-8e73-acbe1fb456cf.json and https://artists.proofprofile.net/proofs/artist/8c235e0b-a01c-4dba-8e73-acbe1fb456cf.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 0x794c42f60f37806e0892e7d95095357c9f758733e750ea983c9fb4c4b6e36fd0. 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/TCAII2491151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6b0263e394599c46ce5af5f3994d32510e1b746c00ac6b5961484688e0acfd. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/TCAII2491154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70c29dd91ed67480ec3f754fc9a523a399aa3854e0cb70a49d9ecf43b7416e3. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:36:02Z), 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/TCAII2491158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff1af0edcded85ef7963477616fa8a2633d58aecd0f2ab8d3e160a7ea8bedad. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCAIJ2491160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0301ba81551869e389f9535c042fb0168045ba7e2a786ac89fe8bc62622f2e5a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:10:02Z), 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/TCAII2491164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f028a1b1e8739eb0ee4383da17ce22cba23d3c3dce932204603e595422ec06. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCAIJ2491168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a2a671b7d97dfcf03abd5442f994ec14a7e852fa85518a46cb7d59d723344a. 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/TCAII2491169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe059007b853f32abee7ec7b0cf526ed47ae3ae7c37c3cea82a7efeb5b01507. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:36:54Z), 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/TCAIJ2491172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1175896676bbc467445e92befbab98695570ea14ba220cce6452a66b6d577d9b. 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/TCAII2491329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694a0e939d070d42b7edf86c261aaaeabc22c6d0f1031b31ade22e30a89d9a4a. 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/TCAII2491334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e00a8d47648a17630baa52346c7ed6bbe75c53f0acf2f25452b982e0c82df81. 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/TCAIJ2491342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dca3d4ab48dac6a8c4e14a4bd4acccee2ae844e90a49cb6f02e459a53f6cd0. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:23:37Z), 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/TCAII2491344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f6d66645acf734f77d7c559fae22d80dc109a528c66faaf99dd157f7f5917e. 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/TCAIJ2491266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59af360b999f2102822c6fbc380ffed6141c8a9746d7e99372cb103e2ce7537f. 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/TCAII2491278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6751abfc2e36d3fbe769caabbf5e9717c605ea1ff0d23b75e969fd8f7a778a9d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:44:40Z), 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/TCAII2491281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5186931765ad386c80953555bfb84fa7ff5bea6795488f6695b1fe0121ffc6c6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAIJ2491282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40e15d4242de01c0945d04feb2ccfdfe9fb018c5a5e8ce0c97e651a97a7bc6b. 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/TCAII2491283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e372d93450f7bf71f6e8fc905ee45d0a89a880ca8689a56c1cc071dfe4b919a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAII2491290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c5e9fdb33812329733aac3f3deef9fb6f470ec4d478b629325f513e14c6940. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:09:56Z), 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/TCAII2491450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7006b0984c9f5c4a1d135aa03398041f993dd9bcb585c255b044b79f5e0286. 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/TCAII2491457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99cc1bbcf434133bf0bcc630af891144c28155befa8393abf72b77513e3ba78. 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/TCAII2491482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0e9acbe00480c51154130de64fc0bef74230b1dcb52c6efa0d3fe5814180b7. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:23:51Z), 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/TCAIJ2490934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fe7ca000bad6d08079b9fe7cc691ddffe1bd911748c6d712afcd4368a578b3. 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/TCAIJ2490936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1c51b335fdfc6571e05826a5b985e93b5c32be083990eb68eff3249b7f7658. 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/TCAII2491042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b684dbc0d6977d6394d0be2a9d2e932102c33a55255eedbb4b8ea93f2d6d47. 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/TCAIJ2491381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a7c566e8d2ba1afb0e612d31c76ef06e448dbd62e3baf0c166d1d2b25c8b0d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAII2491383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47d9a233ae51b51deb0da6443d81353b261294a55fa8883332e2e0f421a5e9d. 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/TCAII2491394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9696dd1080dc168aa2acb4f16c58bf2fed2c5b7412816585e3aca9a1272723e. 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/TCAII2491404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1de6a6a95673c10ec507fa4ad8a75a1878cc26ec9186d555e417f339cc36087. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAIM2445613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4688e2284dfe662a929e719ad81ac0dc1635bd7100ee252b0bfac2ab62a3ac. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAIP2473217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639229e9559877f7c6896f1da9b06e72708dda923b4285c878b8d4c2ff58ba7f. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/TCAIP2473264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd5e6e199ee8f659f167fa8920b13c102fb286821d2706a9f3bb1b65c8786b1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAIP2473267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d63b58f0f99a5f00cb48bda9c2437e309502b07c136804c3e7050382569661. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/TCAIP2473274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057d7eb70744558431af9d2370cbc0a558c052a28119ec5b3c20573b7a1537e8. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/TCAIQ2473281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771b084ad1df7c6e4adcc806f3e3c029dae682ffcff07ca8a70498cf6678a8ec. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAIQ2473287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0894df89a72e04f6eb904e3be00f5bdbaccd01c83cd85f52058a85f7e6a5bc33. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TCAIR2473294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e64b35364ef4c0f205c72dbd342cbeb3ddace2d333d88bc09e707e10772092c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:57Z), 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/TCAIP2473299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6f29624213752b1d71abe34b46b167263f84f12c0642679b870426f797d1c7. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAIR2473308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cfd2860d10164faac4a2803849ac918469dabec61cee951cc84c753a991ce5. 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/TCAIP2473311.