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 0xeadf39099def6a939edfb863a4afbaa25d6b2f109bd2ef9339244b7fc05f548b. 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/b556268b-8026-410c-97fa-0fcfa2affaab.json and https://artists.proofprofile.net/proofs/artist/b556268b-8026-410c-97fa-0fcfa2affaab.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 0x3c4fb362f9fb6b48d4bbae3c5485776b2a1ecba741b99d1f7a42f19963e13258. 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/UKXN22291049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28265322f4d9aacd2d9764ea0967fd75363ca6266d2712b07432b3be6c39b01c. 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/UKXN22291051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9726695f5783bc10f6cc8175374ab25244df4326bfb93c16544375e04c770600. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/UKXN22291052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac47ed2dd0b5dd7685c75e005d0bf1e90f6016b90908bd16ed3e28a726bf27d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:40:42Z), 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/UKXN22291053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61039a8d456fa03b9f39e2f3122bc03a06e5a2e4e0649f07542b6fe2931c5406. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:28:28Z), 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/GBLFP2343168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a7cf2b649c66ee21d9f4aeef2f4bfad7162dd7aa196e94cb4403c770c85e53. 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/GBLFP2348153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6edb5a393c2f71636faad40d934f8cc6a76f643ae5db0a1cee0b3d09509174. 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/GBLFP2372228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ca1912f1290a90054f6f94a49ff1451f27341ad8c8cdb0e1a557104b725b13. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:16:34Z), 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/UKXN22331098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc8e6eed84e4521f8808cb60ecda6471e59ba92d01ffccb40c31b043b80d7ec. 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/UKXN22378833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4435d5a4811a57d11f49eb08ec930e71805ff348231bc64aa5f2640ad4b396ca. 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/GBLLT2400763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e18029db43a2d3d4bc4da9ba85d779fbe5d4392c7a6b6f567635c7bbfbc624e. 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/GBLLT2401824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a662f5f35529eb30227e182f3103aec311bd46e793d13ef055f9d7aba04efd1. 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/GBLLT2401826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b907453e51be0fdc27c4be1f3f2803e442c81500e267dd81016203724ab40c. 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/GBLLT2401827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c6335123457dcd8d065bffa4de5ce806925c012ed37a5039d850c18bdf90b9. 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/GBLLT2401828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c964d18bee77dea156ebf46d9b55a7c519426486953b59d4d3d9ee7c6a24f0. 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/GBLLT2411365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4431d58be65037bd373a8a53354e1c8f0583ac40c4199fdecc76fa6352384118. 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/GBLLT2412107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdf89f725c2bbbdb241709f9b0c6d9a0a1c75ecc280c9ce6d4ddb7aedf11a84. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/GBLLT2413129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ab06b97a8fedb0869d8ae4b13c3cbf5b8f3416a1ad0adf527fa444eac0eeb2. 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/GBLLT2432060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60867a91bf1ba6814915cbc069d8f556c9e3d1ea78532dc9ba6e43aede633a05. 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/GBLLT2436079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd9ca95846f988d47b955f6ab8117bf42779ac2d6e072f5d3fec5c444540e41. 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/GBLLT2438376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f184a68e195ac4b79296eb88a23b02a561495301ce32da0ef7ec5ee0394bc20. 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/GBLLT2441969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f184a68e195ac4b79296eb88a23b02a561495301ce32da0ef7ec5ee0394bc20. 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/GBLLT2441969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb4461ebbccfddd0b955eefb3fc5262e179f41aa7826aa5e3813981aa40fe03. 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/GBLLT2500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc19d2aa90c387168868490059fa656055bf6784272904740f0a01019c1b81e. 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/GBLLT2500861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc19d2aa90c387168868490059fa656055bf6784272904740f0a01019c1b81e. 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/GBLLT2500861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b6daeefea0e881f2ca7ac7871d20874cd83afbbc2ff74bd425b6cbb079c5ee. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GBLLT2501950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b6daeefea0e881f2ca7ac7871d20874cd83afbbc2ff74bd425b6cbb079c5ee. 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/GBLLT2501950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75c86c74261367215b306ca33ee1f0725399cf631775ca5754199e75776134d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:40Z), 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/GBLLT2502062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75c86c74261367215b306ca33ee1f0725399cf631775ca5754199e75776134d. 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/GBLLT2502062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9ea2efe8f3aba2c256fc6d5d92c63b0f7b59b51b8df88bf5db93453abcc226. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:03:05Z), 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/GBLLT2504112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236c027f18cf5d298a25c84c74b90b31b08569a513abc0cde85f5da42435969f. 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/GBLLT2505059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5706238514ee9f5ffa62b2c27fa2801f0acf33cd675814632765fc95b5a7ea8. 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/QZZ782539537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c40749d1d72426e3a8a1726d5c0d0b9d5bd5b0fc9ba69f12c4a6b1b337f0c79. 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/QZZ7R2535099.