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 0x673472e61ea295083e23f50e1a2a0c052a923d56e33e7aef571ec2d90e83af22. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c2dd602-3393-48d8-961c-d76a4499209d.json and https://artists.proofprofile.net/proofs/artist/9c2dd602-3393-48d8-961c-d76a4499209d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Man müsste Klavier spielen können” – Die schönsten Melodien von Friedrich Schröder in Originalaufnahmen (1937-1943)
Immer nur … Du!: Man musste Klavier spielen konnen
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 0xfbe8f7aa90f9099a780ed8a269571c5cef94ecac37f19cec0774821cbc4ccb0b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEL111300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253a25a606e84519680ff8f3e0e54701f2ea8450b7883ff41a37e74b50b76917. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEL111300100.
The Golden Era of the German Dance Orchestra: Michael Jary Chamber Dance Orchestra, Vol. 2 (1940-1943)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3bc4c8adcfdd264b1a355c9f55650509fb53f9a6fabb0d06a05b84e8827893. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/DEL111300667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137062457b7ee679de8a9aaf6e32f0e1ba1e4d0f553ce676e34ac968d0b8ad3c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEL111300668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcea267c3014ae9235822920dfc5ccfa8f7a983c6f79ddf58a5a11fd3c269d98. 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/DEL111300669.
Auf Wiedersehen Franziska: Wir geh'n so leicht am grossen Gluck vorbei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f35b615c03bf428e2a756a5c89772a17332d19b1b2243a78ccaa802216f3ae4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEL111300675.
Kora Terry: Fur eine Nacht voller Seligkeit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf397becb67e11bc4bfb9f20435a2cdd6ba07b0fd461f797342bc38f7c30fa0c5. 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/DEL111300676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8209bd3c886badd8b8179a5168f79c87bd0f33340ffb668eaf407f0e65e4bc38. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEL111300680.
Hallo, hallo, hast du heut' fur mich Zeit?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a68597f46238f5a82006d53cebe49209877d4a0146e416f87658e99972ac12. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DEL111300687.
"Musik am Abend” – Die schönstenOriginalaufnahmen (1934 – 1954)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610c54c377e546ac05972a15ab9a9b2d0308937db4a0d354895b556511a7ed36. 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/DEL111300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166f46db5d72ca870311aa280c34c576d529a2f8f9dcad30a2e8bb1451395118. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEL111300159.
Schellack Schätze: Treasures on 78 RPM from Berlin, Europe and the World, Vol. 7
The Golden Era of the German Dance Orchestra: Michael Jary Chamber Dance Orchestra, Vol. 1 (1939-1941)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadcaf73a875d65ea51684b46fd9cff712e3a44b4f640262ef1c9b8e86e8af62. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEL111300656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7820ec51474afbe011a62d0f9bb47312c2f1ea30645ead17c763d57a1e68c27. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USB8U1003016.
Karneval der Liebe: Haben Sie schon mal im Dunkeln gekusst?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420dd6ec74d6379a7a983099ebba094236c802724aa47468fa8ebf8706150dcb. 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/USB8U1003025.
“Musik hat mich verliebt gemacht” und andere Gerhard Winkler-Hits (Vol. 2) im Originalsound 1935 bis 1941