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 0xcd73bb02ce38120cc9718455de2292a92093d6c8e7baf85ec3d122abf44361fe. 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/66964dc2-0c76-4612-b1bd-cb6fd2c83b8c.json and https://artists.proofprofile.net/proofs/artist/66964dc2-0c76-4612-b1bd-cb6fd2c83b8c.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 0x5dc9a3b124d12885d43f160560dd11d21ea26322443e4f85bd0ec4bda2fca072. 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/DEN981040421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4365c1778d84017c88f3201d9a87b3a7659417a3c9c3ad7de22d64d437c76be3. 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/DEN981104544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529eadf2851061a8912accce88202a69dc44f2485b06a9465dc5e8bbd1544969. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DEN981340605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4400f3c7e84d3ae0b492cfda46b972ce2fce0bcc45a67679ae8eec8de516ec98. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/DEN981440611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0acd4241b3f4f6d5dab2485253cea80a1d0b1883ab77a7d43f43e2a312ae75. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DEN981440612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2de770618b744a86bf8aca3c32915cb9930c760e7861014f8584b1bc4ce31e. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/DEN981440615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f16b886ec19a11d7716cc6a73ca52adbfe63de230b62f5666efef509f2de00. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DEN981440591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833e83ab36b0a5eb0136fba529585c84956b83789b941ca923e94a1fb2f53986. 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/DEN981140543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd6f2a3f69a50999b700a13384cf625fb73e8726322028f51c3b98bf889c671. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:59:14Z), 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/DEN981240581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a1d5fa79b7aa59820267a147be5149ec665d7288596e1e155a12226b042154. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEN981540644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8720bfa3e54a3508c8aecd13f722ef3ba776cc69d4da6c08492567f209f27aa. 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/DEUJ81500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8126f081ddefce8a1d75b96f0bf823e83173c3ce2be229c1a15fcebe6b695320. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:37:52Z), 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/DEUJ81600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4fed3916cc0e35e71bd58ba1fb26194137afc8d6d8479079ef6fcb7332a3a4. 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/DEUJ81600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a6e826934396fd60b3b9ac47c70ce256da30bcbc09bd9d601431561975e696. 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/DEUJ81600120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95efde943459bf23f5413f63bae87b58f6493d57c23bea9b89d9701884f98df0. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/DEVS21801039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee1b1eb84cec7730ebac44efa1477385ff8d35b400524d6789e33c7b6818dc8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEXO21989030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa59f1087bc9686763615d356b4c5349b1e28094656bb41784fe81be06e243e2. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DEPI81902724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78cafa3343f866e273d5b0a82cfb2653be42ba96180d8e7f56920f94d89aa41. 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/DEVS22101250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9d95754d99ec153a510edd166942c6fbd37b9b652c8ebca0f7aeb328f64a14. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DEXO72247615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3643167a4cb4de7da390b22e6181b4712db01881112f64f30c80606b2bc6171. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:35:42Z), 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/DEZ902300649.
Hey, wir woll'n die Eisbär'n sehn (Club Edition)
Hey, wir woll'n die Eisbär'n sehn - Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0e54e473db0859faad20a31947903b75fd022be8d0a60cbb8b1f76722c56cb. 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/DEZ902300650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aefca5edb082cc41dde754bdcdc64728cafcdfbdc3dde0a5d3f01891e5460e5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEUE12427556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ad01b64f662bcb5b1c46f78d002f80b7ea5e56b638c0f00cd13d49cdc73626. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEN981040422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0836ab093220231c7d6ac89d910c0e97a23476856b3b8fd12c04fd781bf9cdb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEUE12427557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28fcb81262c81e0b4e1d96d0f40793e467ff7b8a01ce84f42b4b8aade15a6b8. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:41:53Z), 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/DEUE12427560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43de955e2af96bfcf260300ec9e7517ac9d6e2337d7e7c3275d2418884290389. 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/DEUE12428214.
Kind sein - Anstandslos & Durchgeknallt Radio Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca969c52f767320334ad65392ff94f2a30ff391c01e035a9826827b2021d2421. 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/DEVS21701157.