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 0x573603d907e07578924d6028c5e564d9c6781daea94833ad31a6c014eccf4778. 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/0c803b91-a411-41ba-b8c1-e2e40a371c38.json and https://artists.proofprofile.net/proofs/artist/0c803b91-a411-41ba-b8c1-e2e40a371c38.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 0x6b94f602fada43674dd58222f4d08d03bdce2d9524bc14a3e80abcd7af93e7ef. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:20:45Z), 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/SE5Q51800833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643e84232e7586c84fbadef00b8bdd15568bc09263baf99aea611caa18a6070a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5Q51800835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1893569f2d3a2b7c2cfe47268c64afb526254edaf933074ef27023409ae2ffa6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE5Q51827559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe932fe521cdeea00e66411fbec43f7a3b39a1b3bb52a5f474a17522f9dcaf86d. 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/SE5Q51812481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff1fa07a472a6855b2ae3fbb1cd22ee2515089b63fd8983a01c9983885aa540. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/SE5Q51811259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e54d90ac18c320896609a1d37a8c3bca19e92ed25705c73112e3184a46c1927. 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/SE5Q51827357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6f75eef90b8870b062eebcc3ed860afbe45e3d3f647bc8e7b5bc8886f3ed9e. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/SE5Q51828988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e96bf404042c22153ea284581617f72b50e01260ebb8797079d45a700f57e7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:28:57Z), 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/SE5Q51828953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bf8c14784038ea2a26670e21570779fe123152bae38dc669b8959c8434ad40. 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/SE5Q51900131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3fdcc813795967d8b2d356c365a89838b8b70f6315e415cbd7e4de44c305c4. 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/SE5Q51900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa281d848b78babcdce860a7a3acd3212d18478cefb88578dd13b185009b886c0. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:24:30Z), 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/SE5Q51829193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ae23c4d4f611b4a1b1145093dadf3fa704bfbe88981b9903d5e1625509763a. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/SE5Q51829181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f91c6c90106d78aeb6a70cc9df17127930ba850a5da331a0eeba89ce977f5b0. 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/SE5Q51902483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdb02146edf318c25317fcab8b74a25e8071c4eacd9a860e1ea60b49e1f9401. 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/SE5Q51902101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900d26bfab71e5bf4ab20a457de79f50ed63538199f45c0ff07a64cd43d9da0e. 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/SE5Q51902287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dcb0db11a86135922cfbd3d9bfbcf8483cb8329156ba7bdf18990da40124c3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:50:37Z), 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/SE5Q51902211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e49814c3372055e68009667cd999ab3b8ab37c28f1dde7243653558cab84973. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:07:00Z), 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/SE5Q51902171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e117beb8b849b3610d34f145e65f83abc4fbc68537e80e618c0d7f1fe77a6f6. 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/SE5Q51903081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39f7a07c73ded82e9e679b26f57a4a943c1fe49064d00496303a92f98d94afa. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/SE5Q51902564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ef2b814fce15879c6496bd9a8c76e1c14191db8eaa356ba93034cf21e00118. 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/SE5Q51903069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa961f5a0e8fd074af10b10eed7eb58371781d8db3e66fa946fb0f0f5cf1e2e8. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/SE5Q51903618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47f2736f0a2696c4af268c944e23849963029bed38e9f8feadc01b1b7295c1f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:21:08Z), 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/SE5Q52000262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d2eb8058ae4b6d27b5ac4e6b1e1085f19b98a65c86d99afb1666d79176a9c3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE5Q52000286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6e691946ed7752b7678f102d22948ca398e0b87ce60a9d696a412dfeea08bc. 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/SE5Q52001574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ca7b1320bb6b09f271217b6ffaea852a48a3843b72794865eaab1d87387e6a. 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/SE5Q52003239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e44bda2d7892928e9e549bb54359a4d668bba9044fdd78354da7acbc369b69. 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/SE5Q52002838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce452e63b19d4b96714c5fe2b45650f21bcbe6f474ac5545464f1b787b4ba522. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:11:18Z), 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/SE5Q52001830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8149fc0182a8fe6e3b2cbafbb59a4fb7f408a23dfcd428146c75ddb9ab507fcf. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:23:48Z), 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/SE5Q52101093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2105fa7e8030273f064c756816833645be12e91c8a60750e3629b9e2c6c6c6ab. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE5Q52101923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5fef2842fd4f3229789b649c7145a10efb93d1fabbdf506e031e539119b378. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:24:45Z), 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/SE5Q52103529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a1957aacc85b107738509d871f67fe4e7d995285ccd0b9ef0601e094031dfc. Chain 2 (Bitcoin): anchored in block 957551 (2026-07-11T10:03:47Z), 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/SE5Q52102924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c641d17ebba1f604833b7395b6f0689311e55c02f47b0adc736451e0e84291. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SE5Q52103650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df8016db877bc937ba0043747094e5339728c06a889832df839a0f1fe6d13ec. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/SE5Q52104314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834e3258b0612f8b0163eb0849e4d26fd1dce71a9f949098ba41b289351a6940. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/SE5Q52201464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9db710c73360fcb3a65cc532d27c4ef5e375be87f70054c6b2ab874fae0006. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:56:20Z), 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/SE5Q52202161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f67c533ca3d22b8fa30bb84e076af767f56566baba3784b4f803254419cfab. 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/QZES52589929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d94a2b61de1d47675057b8295480eb571e35b5bf07183df7d78f9ba15b2d564. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:29:49Z), 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/QZNWX2562115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d25eb2edf4c338694e771561951633f28e3605a67acc6b4d5c80343e601e81. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE5Q52000484.