thumb|220px|right|Georg Neumark in "Illustrierte Literaturgeschichte" (1880) Georg Neumark (16 March 1621 – 8 July 1681) was a German poet and composer of hymns. Life Neumark was born in Langensal
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 0x72f1202acbb7e7ab29c40bcf4f172fd816ceaf292c3c596a84fd37e81153e8ed. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6dbf77b0-23ed-44e3-a8cc-ccbccaa588db.json and https://artists.proofprofile.net/proofs/artist/6dbf77b0-23ed-44e3-a8cc-ccbccaa588db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lob, Ehr und Preis sei Gott (Die schönsten deutschen Kirchenlieder)
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 0xd86eec9d50037326aeaacd4996e144f5dcab04df7240c34dc57de40b7dafa036. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DES381312011.
Virsi 479 Sinussa Kristus luotiin kerran
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620f217242f7af08f3ee06a35eef1a7744ea95fc377540b1fb3b2588b50777ac. 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/SEYOK1926969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e64401feaa382979222f17699aaaa0d9fcc34148d06cf6e48d632db9728217f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FISRK2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea162c1182496e5c16b4eb54f8c824e5f866c46b29b4881ea5bff6cfaf93356. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEAF41900165.
Wer nur den lieben Gott lasst walten (arr. for brass ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6080236b39c146adfc274c1f661f70471e40bbae4086c517a06d990ebefc0f21. 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/USB8U1013593.