thumb|Naas in 2021. Stefan Naas (born 23 November 1973) is a German politician from the Free Democratic Party. From 2009 to 2018 he served as mayor of the city of Steinbach (Taunus). He has been a mem
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 0x94caff264172770019db37a53787bbe3a4212938481b1f8a695e0883ac73ae7a. 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/03dc5c4a-e71f-4b09-9794-e4a9c1a9bf0e.json and https://artists.proofprofile.net/proofs/artist/03dc5c4a-e71f-4b09-9794-e4a9c1a9bf0e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jakob geht zur Kinderärztin - Jakob kann das schon alleine - Jakob und sein Töpfchen - Jakob, Haare waschen - Jakob ist wütend (Jakob, der kleine Bruder von Conni)
Kapitel 1.2 & Kapitel 2.1 - Jakob geht zur Kinderärztin - Jakob kann das schon alleine - Jakob und sein Töpfchen - Jakob, Haare waschen - Jakob ist wütend (Jakob, der kleine Bruder von Conni)
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 0x90f605460b5b44c1e9d667d28538db2f58bdce0ed10d4428d6847d29e83a364d. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/DEVP81178804.
Kapitel 2.2 & Kapitel 3.1 - Jakob geht zur Kinderärztin - Jakob kann das schon alleine - Jakob und sein Töpfchen - Jakob, Haare waschen - Jakob ist wütend (Jakob, der kleine Bruder von Conni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195f90671ac0de86e70a7d35e85ceeeabf25ca9116a5977a8c1ad7e1de8b4021. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/DEVP81178805.
Kapitel 3.2 & Kapitel 4.1 - Jakob geht zur Kinderärztin - Jakob kann das schon alleine - Jakob und sein Töpfchen - Jakob, Haare waschen - Jakob ist wütend (Jakob, der kleine Bruder von Conni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fea70f952fc177b4f028fbd88381317141936cc12c3d3454f3f683bdbe930aa. Chain 2 (Bitcoin): anchored in block 958045 (2026-07-14T18:53:23Z), 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/DEVP81178806.
Kapitel 4.2 - Jakob geht zur Kinderärztin - Jakob kann das schon alleine - Jakob und sein Töpfchen - Jakob, Haare waschen - Jakob ist wütend (Jakob, der kleine Bruder von Conni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048e3831885916289f09241b29446acfb57040b0881a71cb86ab59924a0ca5ba. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:06Z), 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/DEVP81178807.
Kapitel 4.3 & Kapitel 5 - Jakob geht zur Kinderärztin - Jakob kann das schon alleine - Jakob und sein Töpfchen - Jakob, Haare waschen - Jakob ist wütend (Jakob, der kleine Bruder von Conni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac2267ebdbf5c09ffda7cd66747f428e4bce1bc751678ca2bb1bf84bd703e3d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/DEVP81178808.