Original Marinechor Blaue Jungs aus Bremerhaven
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 0x5d79b10269d23e529e8de9a6b29d8069560a7295c86a8db1266f173398999b9b. 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/8d1b8e88-0900-400a-9f47-02bb90e516e3.json and https://artists.proofprofile.net/proofs/artist/8d1b8e88-0900-400a-9f47-02bb90e516e3.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 0x4b42a3bb6d9753113d3e863e4cba2d977dbc926780a4ff55aecdcdea703b6417. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/DEA949650010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0c4147d1089bd5e876707a517cdda189f3a7dc6c1c56cdfe35d38d060bdcc5. 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/DEA949650030.
Siebzehn Mann auf des toten Mannes Kiste - Marsch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaceaef061b2abb1711c5c2ad26f65e1330872a03c212cc6149f62ebdd69a555. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/DEA949650090.
Jetzt heißt es Leinen los Medley: 1. Jetzt heißt es Leinen los 2. Das kann doch einen Seemann nicht erschüttern 3. Das ist die Liebe der Matrosen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b59fc78f67eae4e16ef799266025a744460e8da0312691732b69bda5d158f79. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/DEA949250570.
Glutrot sank die Sonn' am Himmelszelt - Marsch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9af536557d7ab9406ab3dbb62eb5ba1dc75d1c80a4a3c1e90e862157878879. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEA949250580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6aa3e434d2b5b8dbdd9572158a71af6a49ed8b62ff12514cf950295c8503a7. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/DEA949250610.
Schwer mit den Schätzen des Orients beladen - Marsch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc65cd7bfb94832a3f7551a12d4a0e7c136627d36462f0df08f3c4453b6d828. 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/DEA949250620.
Gorch Fock Lied - Weiss ist das Schiff - Marsch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98decd3578f244faa7935633178f31d74a9643cc2d6411b0f286afd1596a552. 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/DEA949250660.