1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xea6a8fc003697815b6b7a8413d1781fc4ec0193c8e815255afff76b1d37ab09f. 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/f654d4af-43c8-40fe-b059-761491075d26.json and https://artists.proofprofile.net/proofs/artist/f654d4af-43c8-40fe-b059-761491075d26.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Unternationale: The First Unternational
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 → block OTSBitcoinBlock must exist at that height 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 0x903ce2d454e9e5862837f2cfceb38f620e9e77f333f3f005c9165e1b7d43ffc5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USDHM0906443.
Ikh Heyb Oyf Mayn Hand Un Ikh Shver / The Hope
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43681105bec0c128db52528130331f7420a0aad77e2d3bf008cc3b381071ac66. 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/USDHM0906445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad934674ede43038d2b5b619bfd6a4f1452d82cd4efd192d591926a7f66487b9. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USDHM0906446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbea959adbb30aa6ddf37c40ce919d81f7979e28fb12e34378cdaefaff40272. 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/USDHM0906447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0b5e49acc770db2ff9e6ff6c030f79674bba02b7e3090b2ed040e192241915. 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/USDHM0906448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756b7e730b6ccb7fe7838e252376a10c7ecd7f2b4ae64d0048d5954b75f71585. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/DEK130907101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5484e666fe620b532c81a900b3383d175bfe5dda8965176ffae51f50d229b5c4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:09:16Z), 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/DEK130907102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3be30c49a40f56f87aa6d28d0a64303d626be61234f1efbcbf6559905e4097. 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/DEK130907103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b7f6657cea01fce8ae058fdd36ef4378a4eb2087e6e2baa883fa51b80beb21. 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/DEK130907104.
Rosen Auf Den Weg Gestreut / Embrace the Fascists
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1614b3947917774e3f7105f228553dcac8a6b222600a36a2439afacffcc5516. 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/DEK130907105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ca16f322e30d644c958e2dece495596453e41fcf3255e30607dc109f6b1f2d. 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/DEK130907107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c9851cce34b7615cacae9b1f576d22f80fccd54007b59463445fa5544d9c88. 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/DEK130907111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad9037ea27b5b3eef73ad0bee053406003ee0cd99cbf6422301442ce82b952b. 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/DEK130907701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789019dc7f67f151900100e231d3c275760ce282b42e1fc8e3f4361043272f88. 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/DEK130907703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88231457df160dc4236fcd43efa7dd78c1a7de5d8744060244b4b1c719698669. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:34:02Z), 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/DEK130907705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec038fa227b25ae3843907877118adcf45195be69a442853f3e1a7909e87b7a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:54:00Z), 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/DEK130907707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a47190879a2917fcaa6c697e783e2ad32623fac73d339e62d9ebd225c440483. 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/DEK131208403.
The Ballad of How the Jews Got to Europe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844866b64a13daec50a59fb4832a3cdc8a1f414fcca4305401ecff9186a7dee5. 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/DEK131709106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508ca039b4fc6fbf935400838c9c860edcf3aab64a956ee253c9f213d1c89453. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:31:33Z), 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/DEK131709108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb91db6d474f18310cfa4cddc1f0e52f96614b8f7303f1307e8a04974f5457a5. 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/DEK131709109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749a60c431fbb00f6ba39b7b670d231ad0524f8d38cb5abdc1e0ea0bda0ce45a. 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/DEK131909203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f325bca6a06f9f5d3c3ddead4c14f473001e38811f27ff5967a2c952e6bcb6. 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/DEK131909208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcd6f4bf9f114c4a6f0b90c37302b85703ce3f3beb420b5290ce24a724f6225. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IL4402000272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf7e58f42e2352e0af38ad9b5fee991ef4620562bd15e33d5b9e03f9fb0a304. 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/IL4402000276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf0d744f42274722f326ca22515a8437bc29e9802057afdc633118f1d7cac45. 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/IL4402000281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801ab89e88a8b54e6ddb0b6e57c3087f51f79b62976a83fe473afc0e5d00c6c2. 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/IL4402000284.