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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f8fff80bae48aca899f337b5fff91d07cb4412ec444c13f19c56da1559afa5. 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/35c45f33-b4f5-411a-90c3-d173179eaed4.json and https://artists.proofprofile.net/proofs/artist/35c45f33-b4f5-411a-90c3-d173179eaed4.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d88ceab929f7d36e8c27ef2c4da60d8e92381290cca7c1ba46ab58d3108de3. 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/DEN490800014.
Schneller, Höher, Weidner - Von A nach W (Live in Berlin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5d6c7eba5f24c22f1616de4926f39002941519140e4e40224cb829aa92500d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEN491000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d2418c015e20bbb4b502a8517c602226ce634985702645a1151f014237af7a. 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/DEN491000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf91ca6c6d6c439fdfee1c531d98c6b8b5736f720c07471c607e860bbc538e2. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/DEN491000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7dd3314da146a2879264e0559f0b9a08ca1878e29436c68833c3c24f9192dd. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/DEN491000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568e5ccfd4543276ba2eecdb639c7c6bdb5d84f698c94aef21cf0685e5795381. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/DEN491000146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1066fd0d6d0c32a517513e81d1475c51b1c7c97459f87ace5690ac1458b0fbd9. 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/DEN491000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc254f933f1d122032829c4a079c96c4c0f0dc0d97fc72fbee44089186e57f2eb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEN491000149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd2974607da510b37cc3237a5f3c376c6e48d807f7495683d4621b1395a5a6a. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/DEN491000151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dc6d84d6bce7690bba7c913b2fe604f08503e7ec4959217b1b897f2ebd6afb. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/DEN491000152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c80894bc0c5e1d3ba656237a14847f86480733202dfadcd0d2d7b9dd8ace28d. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DEN491000154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4276911a96a7076f9188a81a8ce65bbb3fee0e45dd96458460a9cf05e9656f33. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/DEN491100157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f0f73190948012a21c1d114bccd968a9078b8bf3a508aededde2c95b3f4529. 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/DEN491100160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f9ea5787b49e7dac921739bea17643d2b7b2f256e300b221722f5cc476c87a. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/DEN491200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff1a2397d7bc6c119edbda2f567775d4323a1069fab9396d5e279bc5683d099. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEN491200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35271345080b228d46f0c0426f6b93c3849f1201aab60fd1c0d26c2675f3e682. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEN491200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c8983f9c0784dea9885b8a62c2b0441f617b9b361cd2afaf092f2a08b0b410. 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/DEN491200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ce4b1c04035d6ad91efe823d858a56f306d04cbed4fbfdc107a247dc823b2d. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/DEN491200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d882fcc094f461721e1572aec64c8fe4819d5a6aa9a70e1b35031260940e6b. 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/DEN491200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c356a68cd96cfaeeec6919139130a0307b1c0c09a15f85f29f55824b3e99dd. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/DEN491200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a43f9864de65b1450fcc3747ca6053b0800c5591426a6a73200d4a05c6ba80. 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/DEN491200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee673240304706dceaf985eb8ba128769a564c3ceca5d1224ac2bffb9f7b6910. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/DEN491200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bee2bd43c94e703ee2315468ef42a231a988718d9a8486655099b775fe594a. 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/DEN491200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f561cb110cc938fb888883c0ca61379a460631a929915d2069b52d38b569522. 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/DEN491200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8792bbf838f954e1ffbd8c990162074a326e4a13cc9394a0dd3eba4391786982. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEN491200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f50683fea23f34fc6d2f1f78a5bc52499afe25286674d5a4c5896c22b4cf5a2. 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/DEUU31600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828c7c3a0d453576e72a4313ab74076c1dd5e9d23780cf618db99eced76d5fbf. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEUU31600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8fbb3ea7c2935ac33c4e6dfd1ae3d2eabeb3b6bef2045b8c198c370f8a005f. 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/DEUU31600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db80f8b4cc17f712a7fa8b286fbb6056f4afc441c28580575d8f5cd5b9a1e40. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEUU31600010.
Sopa de techo (Der Schmerz verlangt gespürt zu werden)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9728ac47d0ae20acc4f755368ee83f6f6a621d34fb428bfd4aa0bb5065a2819e. 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/DEUU31600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601905b4d62575c7f9a4f1062375e82aab4227f4d13ecc130a8ba906a2cc082d. 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/DEUU31600012.
Operation Transformation - Zwo Acht - 2020 (Best Of)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7dd3314da146a2879264e0559f0b9a08ca1878e29436c68833c3c24f9192dd. 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/DEN491000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c3feba91f3790f5693ae3017b4f216b0fb48e8d96bb5b143863cbdac70d63b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DEN490800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9b04c8fe5152c3417f0f31b18b393f7745651937bf74934334355230e86410. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEN491200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dec4d164ec713eaa9d86492a68966ce359a029bfc3dc9d15033290e0c1a512. 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/DEUU32100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8770863a5633109a20167259fea16209a1aca1f6d75907a9f3a17146b15c614. 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/DEUU32200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8583aa8a9a46d7f7692856061a9ab381325ce8dba0e4979e92272e8b964168a9. 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/DEUU32200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7ebd70990ad16f3208fdbc6c897a485a79f180c49b9fb39b9424551c247518. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEUU32200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b59905985868fb7e860094708ee1c311500e631e73c6dc1ecfea5121b80642d. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/DEUU32200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44edcfd1812539c83c9a1f2bd4d2ff4c32acefd3ab463d6acc10acff061d3ef. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/DEUU32200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c2032c4a56c4c7f42a3c4b643269e5d13cce1d18dc5a17c95386d62bdc247c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEUU32400002.