Georg Friedrich Daumer (5 March 1800 – 14 December 1875) was a German poet and philosopher. Life Daumer was educated at the gymnasium of his native city, at that time directed by the famous philo
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 0x063b5779b57c8c744dabd437e4ee65f966facaa665787291fc90100fd46d14c5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/787d5452-be32-46e2-acad-358e5b88ada5.json and https://artists.proofprofile.net/proofs/artist/787d5452-be32-46e2-acad-358e5b88ada5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Liebesliederwalzer, Op. 52: II. Am Gesteine rauscht die Flut
Brahms: Liebesliederwalzer & Neue Liebeslieder
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 0x2ec278489d3ef19838300544d464c175c2c51aef0c7c26d0708075cd4fb8d0d4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRZ140617020.
Liebesliederwalzer, Op. 52: V. Die grüne Hopfenranke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff2322d06177dfce8e47ca11372c9f9fffa18557b20c15d158bf50c05793dcc. 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/FRZ140617050.
Liebesliederwalzer, Op. 52: IX. Am Donaustrande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54f5831e39d0e1eb5ddc99b9084b3622c2181ed337d46b1ac7763bdbff82661. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/FRZ140617090.
Liebesliederwalzer, Op. 52: XIII. Vögelein durchrauscht die Luft
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d18c921337321ec0b30772cc66308414ec4f8874dee0fa6b328cb97b81f9265. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRZ140617130.
Liebesliederwalzer, Op. 52: XVI. Ein dunkeler Schacht ist Liebe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5779614fa6dc49913b13d4b6fc967f0b0e0e2efe0e82d77a108211a912d188b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRZ140617160.
Liebesliederwalzer, Op. 52: XVII. Nicht wandle, mein Licht, dort außen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c251b7c169aea83e424f4dad087e3d6e914a8f7db6a496414f7c1fbae6732f5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRZ140617170.
Liebesliederwalzer, Op. 52: VIII. Wenn so lind dein Auge mir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa34ba845f60827d6fd7fd4143b5d93f4b733b41716efda94681e5ee6146fda6. 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/FRZ140617080.
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
Liebesliederwalzer, Op. 52: XI. Nein, es ist nicht auszukommen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dd94a563328e913a626a3d9b1f4579aab7136678a9f4ba2bdeeaaa707e401a. 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/FRZ140617110.
Liebesliederwalzer, Op. 52: III. O die Frauen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20aed4bcb35878a8b48839c41acc64f006236d15a550336571e5f3f0d5e29f1. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/FRZ140617030.
Liebesliederwalzer, Op. 52: X. O wie sanft die Quelle sich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78fecf0671be8d969e0f33a91159e79fd719afa93c128713e0b1348ad1d7007. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FRZ140617100.
Liebesliederwalzer, Op. 52: XIV. Sieh, wie ist die Welle klar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9023f911c5f9ee1b633391466ee7175d22a543ce2a6e0b39d327bf7a4401ad0. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FRZ140617140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9e011a93ee642a93940618a320aa91203a15968cc78e4c4e672c82b9b14ee5. 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/FRZ140617210.