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 0xe5f34ada92bbb984e8b18c842227c097a8194e3167958a16eb1e985d4df14784. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5482a75-fb4b-4904-8057-99bfd23eb0cc.json and https://artists.proofprofile.net/proofs/artist/e5482a75-fb4b-4904-8057-99bfd23eb0cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xc0c9340b9ba8131c0a7c63d532b3a526316c2877dd30728a15917756c834787b. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/DEMZ12101238.
Folge 34: Ade du schöne Kindergartenzeit
Folge 40: Eine Autobahn durch Glücksdorf
Folge 42: Morgenkreis mit der Dödeldogge
Folge 46: Die Olympischen Spiele (Teil 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82298f2259ee0e701ab0401274c5ef27d0128e9715f4f113c87caddd7d1d6525. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DEMZ12401721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342d4ef64ca286ea11863b3f6b20f146937d5c28d7a26c57bff764efa594f870. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEMZ12401858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0543d1be82ba72bfffda97ab0082b270e0c37916f9b6244af4ad9f6d74b2977f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEMZ12401859.
Folge 48: Das geheimnisvolle EI (Teil 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc768e75a02ba4f43851370c9bd5572b523ef3145bfcf2462d06993ac1a2cbbcc. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEMZ12401965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c9340b9ba8131c0a7c63d532b3a526316c2877dd30728a15917756c834787b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEMZ12101238.
Folge 51: Der Feuerwehr-Elefant (Teil 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8276835c8f8298d4f9b4e5555fa180ebfb52e323866956574f99fdaa2a9bd98a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/DEMZ12500277.
Folge 51: Der Feuerwehr-Elefant (Teil 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d69bdb35ff6e8859a9a0716b6977d5d5f24486b5dd7410c82f9f68561974040. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DEMZ12500278.
Folge 51: Der Feuerwehr-Elefant (Teil 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8e6f790389e7f113e2e8306dcaa45b5a5f8f3abb351d52bf1cf541e8f1401b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEMZ12500279.
Folge 51: Der Feuerwehr-Elefant (Teil 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6866287e58de210e51df9ac44debc1f09a740a0b57aab1958a19837d4702f0eb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEMZ12500280.
Folge 51: Der Feuerwehr-Elefant (Teil 5)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bea8096c996dd1531fbe72d183904a8d8763126a20c2928589d89e36d72528. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/DEMZ12500281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a82be74394eaad16f4c41e065e6c16a8ab2d7c2f559d9c6d0fe5852137f22e8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DEMZ12101239.