thumb|Zuccalmaglio Memorial, Waldbröl. Anton Wilhelm Florentin von Zuccalmaglio (12 April 1803 – 23 March 1869) was a German dialectologist, folklorist, folk-song collector, poet, and composer. Born
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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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c9f64ab9a68108ffdeee5d039d94a8f6efffbf94e4a0bf9ccc648ea7225eec. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa8e2219-1afd-45d3-b2cc-e546ae28d1bc.json and https://artists.proofprofile.net/proofs/artist/fa8e2219-1afd-45d3-b2cc-e546ae28d1bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Blümelein, sie schlafen (Sandmännchen)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf3a0147ef0f656ac348e422f0b594ca1e375e3d43ced9dcd33504220b4602e. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DEF067406100.
Mein Mädel hat einen Rosenmund - Remastered
Mitglieder des Gewandhausorchesters Leipzig
Peter Schreier singt Volkslieder (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acbc55bdc400171f10cf032da3e88ffc876423cf3750ae2ccbfb40358d1d109. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DES381914008.
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
Kein schöner Land (Arr. A. Tarkmann for Choir & Brass Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442693a3bbe988c777183d53e556f218b89214516fbe5c296cdeb4a965c2fe8a. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEB111904201.
Gute Nacht, gute Ruh - Guter Mond, du gehst so stille - Verstohlen geht der Mond auf - Abend wird es wieder - Ade zur guten Nacht - Wiegenlied, Op. 49 No. 4 - Der Mond ist aufgegangen (Arr. A
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2028f5a1554ec3705eefa58d9d97bdf3ec8a72576e2f3cef73fa149560301570. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEB111904210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d471ef3dda67019ed3994b57db2a09871d6e2c84c07494e9690a02fe62b7a9. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEQS92200002.