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 0x4f8b7acba397668366c06343d9bbc4a5c9f22ca21a36cc218c72d31ceacae188. 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/617009fb-48f2-4a0a-b335-44911d9755d2.json and https://artists.proofprofile.net/proofs/artist/617009fb-48f2-4a0a-b335-44911d9755d2.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 0x1bf931d28a2cd4f5ac19f926ecbb7f733ac5f0672fbfa242d0a106a17f6b5a75. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ISA111000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb223f17895319280ef7b92e5cee627c99cd9d42a48b72fe3173057cfb80c18. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ISA111000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5f888305b7dc4c4468955bb6edac44f369f2c005042e3065f249812b0fef95. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ISA111000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdb2861ce6723648b6083e1bbc41061be38a5126f92374a912e3029a5daa68d. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/ISA111000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd9bef2bf9d079de5133f24ac37d0401ec75529afd13fa8cf496d174a57c8f7. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ISA111000114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18392832bf63163271de90cba007d839d3e2db5b69c3b937ef2740f7ccfc5c35. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ISA111000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ceb82a6f09ba1c87283e8a59f061c8645855893bd133bf20d646c80f582e5f. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ISA111000116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5a3cae83da0ba9a97589d749ea4e01f0f2be3ec2169020736d1d6cc95e94fb. 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/ISA111000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96117076015a5ee07e41743cced9cffab2df364f220dcad19b633bfa60e23544. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:01:02Z), 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/ISA111000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04813d6b49d7e399cdc0bd6d1e552dec48ebc2e7a068edca485a511a959bffc4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:20Z), 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/ISA111000119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266e93820c517be368a1d3e265abba4137fb5f2fc6332f240bb506d20c544b99. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:39:05Z), 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/ISA111000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9857625b790c1e043e2d5f020d2a79e714b6232cce1fa3f378385f5fe94527ef. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ISA111000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1871de5a839b2d88447bc86ffe06a1bc68cb98ec5f189f974275043de564e3aa. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ISA111000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658a68992ec234bee9c291dc955f78c372f296bc7235679e3d73e112713a0b36. 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/ISA111000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48312d1a58c966efc6c6b431876da8b57b25863ae68103624f8c5245581598e9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:52:20Z), 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/ISA111000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82ba89ae97bfcd8d20c4db37515bc7240cf40dbf98e695b5ef021a9c22e97d3. 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/ISA111000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b31c36a6b6696d7e2c181331c7d80d31f953c03e68beed99c1a0bb78a71869. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ISA111000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ca14703ea370b18ea6ae54b2ce72661632250555b8ce8220b067d12f8d3a19. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ISA111000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353b8c42a5531b2f8a22cdd42f8159a617359c47300a89a9bbde2b3552591dff. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ISA111000128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a96747c247f7e0db49998a4cafb0cb426fe09bb22730febfb6c033b8dbbaa3. 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/ISA111000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc721283092a05f605ef8a6ff179c2b0ff2e43ef2727403b956f3c7d7605a329. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ISA111000131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa0af0e2d611502b95c2779467f6dc58aa8a7e251162df235dd8d9d23e724fa. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ISA111000132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f77d5889e500e9f6fc1876b63666353f3eddb145e5d71e4072091642f0a14c. 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/ISA111000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68366225204708659bc8b1859706508170b9f8adb1cce986a70cc67efbc3425. 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/ISA111000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687e737dbc32403ce9a79b6a5955192de033172af1f1abdc9751e3dfa6933688. 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/ISA111000136.