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 0xc4f5e8635d7380115d6fad8d9c17b974abe9ec4422b7e691794280415eaeb68a. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec4c5609-10d2-4fbd-a7b2-c2852a0fb11c.json and https://artists.proofprofile.net/proofs/artist/ec4c5609-10d2-4fbd-a7b2-c2852a0fb11c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Shanty & Seemannslieder - Happy Sailing - Eine frische Brise & 'ne Buddel Rum
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 0x2bc8aaee8e99e0623d6ad976e5cf09b4c43272c3d3141998f546959ee2a8ad86. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEA940150070.
Der alte Seebär hat die Schnauze noch nicht voll
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b8bf506ec372feba71f923047dfb90a6c2b83c40ce4124125c680ebe78ced8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEA940150180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3cbd17b5334ffc238b5522fe128eadb421d992f354aeb4b92bc6a8d6f428c6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEA940150110.
Seemannslieder-Medley: Heut geht es an Bord / Wo die Nordseewellen / Schön ist die Liebe im Hafen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc55c3dde8d9cf8fd829bc7c451888e2499ef9e2e6a4c33a927d0ddeceebcee. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEA940150080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474349058014035f53aaf9cb85d332aa0bde72a4e1f24956ece530648aeb4764. 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/DEAF81398974.
Wo der Weserstrom so manchen Bogen macht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1ca12db198c2871ec9bc9869aac9f1aecf925e4a46a8285180f00ba79c925e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEA940150120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05725c86187fa629e9eaa82ea29e8f412e6694c17f865de89ae17e6410e81b88. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEAF81398982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37431548d883c3063117e78cfca45c98083eaa897522d7e594dfdf1ef17e65ae. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DEAF81398981.
What Shall We Do With the Drunken Sailor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1be80496d11d556cfb379cc7c2264bfb96b03d24ce5298e16183ad91b21326. 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/DEA761002508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a418acb88904954cb3aca282535a125b2206d0ac1da34a9e1c55aa5d192e50. 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/DEA761002510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff8aea1415175af65aa1817c5965d9d6f13d3e9a43c32136df3d704f0b5901e. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEAF81398973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4199fcfcfde1bfe4f77affc0d48ee5901ffbd171018ebc8d1fa177c87587c2bb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEAF81398969.
So schön ist der Norden - Die neuen Shantys (40 maritime Lieder von unserer Küste)
Die 22 besten... Hits von: Shanty Chor Frische Brise (Musik auf Deutsch)