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 0x400814e7f7269ad08cd9d452edf2dfcb4ff1555ca375ac06b24500892bf49024. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bad76a7-bf55-4102-a5e7-30a035b8149b.json and https://artists.proofprofile.net/proofs/artist/9bad76a7-bf55-4102-a5e7-30a035b8149b.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 0xd41e6d6b3a515f9875dba39f816444b1ffc97e48759674f35404ca7f8e32fa9f. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZZ7M2500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1c2461f7a76f6298a016da1b3d99789361bf35b70d79788693a4c1b8dd39fe. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:08:08Z), 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/QZZ7M2500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805d1dc0bb2b499a7607ad33e3d4b33d72efe97d48175e23ddb4b75709de4811. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:01:15Z), 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/QZZ7M2500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61eba2bb51418c6731e5d2520916350b9f2c9d8c33fad09b58215e912a980408. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:02:18Z), 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/QZZ7M2500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e6fecc51aeabaee3e04f801fcddf30a4059be69a303b33c00de77bc3f70414. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:43:35Z), 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/QZZ7M2500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da7b4db39fc267d081adc41c3ed7ad7814a60d67c586e4712fb20ca140ded3b. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZZ7M2500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f9117c7f175f2af43ce9044016b295777bc1fd7a17368179f9cae8e857490c. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QZZ7M2500212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101b4fc990de070c982f8712fa68be1338a6ed55c4c20476b8595f8ea8fe0762. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:43:58Z), 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/QZZ7M2500213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa623125c268f669e66f771e4435387ad0d1a37232187df9c2adf97aef03cedcd. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:35:05Z), 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/QZZ7M2500214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f82a5168c92a9592ca6127db2f6398cdc5025f7bed8cde69f589df865a35a8. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:40:07Z), 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/QZZ7M2500215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a14e0d9fcef112a42fd193473056d27b73f8540d4147f7896fa577d0e0e354. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZZ7M2500216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e5bdf9b016a9d0d3e56f5a4d77ad396997d036fa37a3f817daee2826b2d612. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZZ7M2500217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7040ec8fe31047135400bf47ebe7cb4e2fcbe76cde3862e18db2e9ad58e378. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:43:52Z), 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/QZZ7M2500218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c336b9bd72d761a5a65c790bac196b83d4bd42065562e6f751bbb2a0e66290. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:41:40Z), 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/QZZ7M2500219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e47ed93380278bab152981c4392029f4b352814a62ad6a620786ed23346bac. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZZ7M2500220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6406edf5595e2f42c7ede299b46608024eed2764f463b9575522e283394886b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:49:27Z), 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/QZZ7M2500221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5c9a57329c44ad99c71d3ed36c96f2ec72c86616fb42d1efa0a1142a07493d. 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/QZZ7M2500222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe776ba025edabbb34b4286c48bf3ad63ba0a44cec0702f02952adb85531a3781. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:17:19Z), 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/QZZ7M2500223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bd0e95b1b9bb227a32a52ba68c30c87cd9797eb6b98d58bcb8c4d03fe104ee. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:54:23Z), 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/QZZ7M2500224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d80a86d1c1411dd8d2ec96d6cbefff48695bcc397e9a25015acab5de15cf832. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZZ7M2500225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6a9d8f5e52ff68daffc176f42dd229e0f35e71cf21276010f873221bc78eee. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZZ7R2503427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1707d54b34e77f9cc2aa0f6da6eb2cb6dde570be76cfec4fdb010b4d2e15429. 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/QZZ7R2503428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4439001f924c9afb98e66916df31920d207010b0db0893ae92711b9fffe79db. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZZ7R2503429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297c815aa3272be60fa7f0c79508cd5b695f27302fdbabff8bd94c37a1000e79. 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/QZZ7R2503430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a0f343405c814c3514e88ea908e648c2d9dcc6826a87b6313a09fc487656c3. 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/QZZ7R2503431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe134dedf8701386b13a2cc55373f1889e1d9a602aeb1e410ca2c175980b4a15c. 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/QZZ7R2503432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a1bdfd6bc0dd9b4811ad9301f56b401d8ae2937d3646fa48ada56eb674a252. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZZ7R2503433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a75286a1f210a126f398e6d425e148ad05c31b80028462f1d59a0be4c8da9ad. 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/QZZ7R2503434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471764584996c8c5e67a465ba982c32ca6a4781d4e7c97072233d106350d7185. 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/QZZ7R2503435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8607d3be0672ce2eba453e0b187acd4e0b92cb1342249cc1436468b88aa848. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZZ7R2503436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee678b0060924cec50ffdc6ec51d517422ca7a72263b3c2efeac0ad1c9f2c05. 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/QZZ7R2503437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee92cf97a94fed68ead0751c8551eb5601106dd4920c787bd0e9a440cc1058a. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZZ7R2503438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6c5966c6947135cdfa27f62fb49a025c055646f290196a7d96783a4b5d2a0f. 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/QZZ7R2503439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a8f34a83abdd70bb9436925646ee0c26659e07f2ae3489d6908a2b56fa9983. 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/QZZ7R2503440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c0f608882d420f2cf364ca86c6da2610302f6c47e74c260482087758aca2d1. 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/QZZ7R2503441.