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 0xa046f5802166f05f92fc532fd7f779cc2e1fa544842b2af767f6fc27b2ec194d. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3349689-1574-44a7-ab3a-4926950cb066.json and https://artists.proofprofile.net/proofs/artist/a3349689-1574-44a7-ab3a-4926950cb066.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wie herrlich strahlt dein Name, Jesu Christ
Quempas (Weihnachten in Wuppertal · Christmas in Wuppertal)
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 0xda5c57509ef38dd729461deed48ce42d3bc2f8071e9ddf03d275a026044db0a9. 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/DEN422418001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40008ac233867e9d3fc9c8154d3a6ca0450e248e347768b2e9822c3f8d5400e. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/DEN422418002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1afab9eeacc6880cd73eef996f00915f4ec31684be9b555c659b2d19391dad. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEN422418004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239ad632e4d7d40ca3dab1e0d1558024f12dfff0e3fabd99a2255431ef8b936d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEN422418006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caacfe962c5368c62e9befa33e9742ea76ece03e72ab9b7c5463abf9c5aebd0. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/DEN422418007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4251bf281384af1e71b193b2edd14152b56d5eebead5808302b1de0155d2e64. 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/DEN422418009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c87c45e16b10a2f4919fe1a267c3b05080c65836cd6a0d00d4907b666cf143d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEN422418010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761b117b89996715bc423ef29b086524898625520877030a5f964fd2656d38c3. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEN422418017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67100d5531581c077810a4be24ced40d1c7574dde68aa76927b4efbee7b23e93. 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/DEN422418018.
Von Licht und Frieden (Geistliche Chormusik der Romantik und Moderne)