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 0x125cdfaf44317ba4dd637aafce7bd0cd7f5e58d076b24ee00e98a3df2db0cb8e. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb7e30b4-7d39-4d5a-ab6f-5436388f2284.json and https://artists.proofprofile.net/proofs/artist/fb7e30b4-7d39-4d5a-ab6f-5436388f2284.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kapitel 1 & Kapitel 2 & Kapitel 3.1 - Pixi Wissen: Das Meer
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 0x0028c24b70ca0bf16009ada53eb02901492d1f147b03992a11fd27ab6b189bd0. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/DEXQ60954202.
Kapitel 3.2 & Kapitel 4.1 - Pixi Wissen: Das Meer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2593bce9b6ed59fd52d3b1c92ef6726c27543b321461cf00d4a3f16e280620c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEXQ60954203.
Kapitel 4.2 & Kapitel 5.1 - Pixi Wissen: Das Meer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2dfba6c04d58232e8839b3130fcc8aa5f542d6c0483579f2cf168af74497bd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEXQ60954204.
Kapitel 5.2 & Kapitel 6 & Kapitel 7.1 - Pixi Wissen: Das Meer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbe5ad14095dba7488246bca867d166e3f74514ecf467e1833c1c4c2d872be8. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/DEXQ60954205.
Kapitel 7.2 & Kapitel 8 & Kapitel 9.1 - Pixi Wissen: Das Meer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d62f349be749623865438e9eff876fce8428f2740b9fc73eea0ba224938efc4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEXQ60954206.
Kapitel 9.2 & Kapitel 10 - Pixi Wissen: Das Meer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc5179199bb13c037976e97e17066f286d449544982e11ad4f0367bcd76e7a0. 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/DEXQ60954207.