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 0xeb394086cade513c593f674f46ee3c541fa8970941f2fd1e98c6be89132e6289. 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/99733c91-ef61-4684-82e9-8fd39a1919f6.json and https://artists.proofprofile.net/proofs/artist/99733c91-ef61-4684-82e9-8fd39a1919f6.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 0x6a3a697abf5a81701c555e245831c398061ee188047557635edde8a2d2d538ca. 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/DEH840500815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1cad18a54d73f0aa03f4d06ca625c51ef88ca3370e5c1d7be3256bad41cee1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:21:38Z), 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/DEBF30600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f7fa21e92a60ef93dea3fceeff466b3df0463e720ad83b5fd61e5720b5ea12. 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/DEH840500788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33505acaa96e538bc27a1d6569e136204866f1d03908a5f15949912baeb9b3de. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:02:13Z), 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/DEH840500789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c23fa476d110e3306a44a3d7d9b28707acb1ba5116a50166111f06531a5677f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/DEBF30600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a59e345922b57ad30dfd92d711fd030e0a9b5052392a8468fca29011e06983. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DEBF30600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe259f00c32d86faa1e60b34e4cead39f5f9183b6e71895c3808347103e02dfb6. 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/DEBF30500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf492404f1c39c077285463473452b9b416246088be0b84ed120076737ca7e9b8. 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/DEBF30600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4945a0ea807d8f1edf36cccf8792ec93423e695f769a08d2cd63b5db98b98d5f. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/DEBF30600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2f391aef08682a6e1189c3cf338e95c5d8622b27a607a4d924ff26665b6f17. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/DEBF30600034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30d28ae8eff2d18c41ff5f48f2ac93929bc882a6b3ecf89c6d9fcb05235a2a4. 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/DEN060801164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca97a94059fb1fc1ea2f40e4cf3dcbb25425110e7d3a81bc913e708ac6dc82f. 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/DEBF30600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f7fa21e92a60ef93dea3fceeff466b3df0463e720ad83b5fd61e5720b5ea12. 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/DEH840500788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae16093b8986e8d1a06e77a0bcb8bc83cf72b638533075f1aee22e104341cf0. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DEPI81502646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5fc2191f5a64292e93fdc3da0e3b434b8fca2bd78b24337b167ca59dcaa00e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DEBF31700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918f79908bbe80cbab4b6b9791252dcf31d0cafe5bf0f40e135d727998013fee. 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/DEBF30300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc99f18f265799c86e2c06a92b72c7177a526831b8b8d17d29ad2209de6401f4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:03:54Z), 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/DEBF32300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bd10421eb08a5bd26d3019bc011573344da935aac0b5ba4064b5aad59a7833. 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/DEBF32300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc22a8b85b38e35bb03dfcb9aa04f2d05bba9119232e4023c169642d280be48. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DEBF32300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e27dc2320dee4de701f2238b6d1b61ec14a7703e08fb0920367856ed62677d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:30Z), 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/DEBF32300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574610a86075f109e0087fd2d399b875eafe4b6ad8c4902a437794db27fd9dc5. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/DEBF32400006.
20 Jahre Antenne Brandenburg - Oldies & Schlager
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484d19627e9b06d4bb1ae61be3433171306def19bcf68cbbe57af11a6852906a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBF30800066.