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 0x43336fa68521af09a2faa6db94de772b4101fb1393fe24137eb2dd1e8e01faa1. 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/d4552492-28b7-463d-80cf-78fcfdff223c.json and https://artists.proofprofile.net/proofs/artist/d4552492-28b7-463d-80cf-78fcfdff223c.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 0x1286c9a94d31173eb1f686212b3d74c871e5dcce8e0ae73959b22749ba731eae. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZHN52050864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6f70899ee667ac15c6de92e544fbe8150b59fa2b2a8dafae059ab329e2e72b. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZHN52050866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8e24e1f8bcd1becd9a6bff3f081277c48f72a79716f2a00d7620473aeaa2a3. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZHN52003750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15346a532a7a4cc9b8b4ec9c55cf2983ef2b272d141a97082571b94296311f70. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:04:20Z), 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/QZHN62042809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21635b9dce67bf88ab9cd40aea8a033477a7af3973c902cc45ae8ab48f4753b. 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/QZNWV2061194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e2fb31f08eb00055e968d609021fbbd3db1c36ad2c1cf9dba311a654d35d48. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZES82167878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e283f04366b1f3f66309cd4d6b840425567faea8773bac80831804975bc9b10. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZES82167879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf264ce7fbe6b5100a0d61dcefae7b76967cc3c9265844a75e30331a975f85529. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZES82167881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98700544a00f21075846824dcccf6d136d374622e6218782a2479367d35e16f3. 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/QZK6G2146002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227eca918e8e1effcb9745ab4be8131e52d4e34346097fc84166e3d726163340. 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/QZNWU2183114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b87541b17555973c1f0e54f102248280a07f7331468b1862d7a43aa3bcbac4. 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/QZFZ62214500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968f829d716c705a2fd81915bbebb2fb93b1560ee41e964ffddee8260404c9c9. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-22T00:30:49Z), 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/QZNWR2200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbdec15645c3bdc446f7c3b2fe386cf310d762cb23db3ffc516fbc9f066f412. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/QMDA62209128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe6b7d57435f8710df12fdf6f1c826e0d324aa69272666436d62799e613e542. 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/QZTB22227471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9859b32b369abb95c64802e0c6ada645383e70422c6e6cc9818220d1d2d09207. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZTAT2132818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a91172e1ed7e1e7ea56bc94bd080da825b843f513810ec55dc8ec4422eb2717. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFYX2305983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02552abc9d6ebab1da79da85d40e431a050f795786036f079cadf63485930027. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:13Z), 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/QZFYX2305984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57aead1f5d7129d91c08c6c977c2de3025a5255f91d223ba1c976723d33197b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:54:26Z), 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/QZFYX2305985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095908f3fa021eef16583a257dc9ae32d748a064f4d3f9db640be91ab55a43e5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:55:31Z), 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/QZFYX2305986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610d437f544405ee9bb54c5db1638ab7b3d3ee96720b9702da706636629d689f. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:45:49Z), 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/QZFYX2305987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cb3a4bb773e87bf657d28dfcd96c4561b113adf0202196dcae700b9e988186. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZES52300724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c7808119f3ddbf448c3f3316965f3ea102b93260ab50f0dbef71b0784469a4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZGLS2390187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23dfb1b8f832df8a42904e41fe624bf4bacb4c476c56273184cb92b94e830d92. 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/QZNJX2353114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc909f407fc7ded4d32968c3327a6cef33ca0392f42161e0142015e4debce825. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZNJX2389876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc40b0555fe03428c12293f28f87d71e8fffc88d1ab458d1ccded2046ee9ab8. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:08:31Z), 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/QZTVM2335652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbb22c6b51b246c90a56917b8313c127b3ac365dbe621e521f142b571501c08. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZW9L2356956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627c4f30f153c0032fe5fea097a80416d0fc3553541a7364694701f5690d076a. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:57:59Z), 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/QZNJZ2490649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e525c140bc7c1b6126b9dd63f196e2f5fcef13190aa7907c6809d9c7ad7c70. 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/QZW9L2420449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079e5010d9320e4dbddf0db856965b79dea165a823402d6311ba4a2318e0ccc0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMDA62317217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee46ff638621b56f759f0df27601199d54942857850739fcdbc30ae30c946176. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKXN22238414.