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 0xd8fc50cb09b104eac62dad60603384af39830bbbfbc5dc3faf956ad2afadc75c. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97442b5e-0d42-4d0a-ae34-c0edc2cfbec9.json and https://artists.proofprofile.net/proofs/artist/97442b5e-0d42-4d0a-ae34-c0edc2cfbec9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ägypten & die Pharaonen - Hördokumentation
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 0x679c954df2aaa6c2f8a939ec951173f89fdccf604af67a7504e5076e9ebfcd36. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:31:16Z), 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/DEA760704101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe4b0065e3b02a44ab5388fd9aff971633b15c9cb135d6088367234662af293. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEA760704102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0509fdce4b4d17dbe47d446342d5a6009d7d1f5932a9164a81eb738c379cc30. 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/DEA760704104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2cf96140571b32df2676955d6676e98a1d2fb4ab10bc68de053e88f2c1b171. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEA760704107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048db06bda79a8fdf0e12f429f69f6e39b1d2c0530e389fe4886d7ee99ed1253. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:30:51Z), 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/DEA760704108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b30eca9051a581c5a4c34ca727df136f15250670314669c527fa9c44fe2410. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/DEA760704111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8045a8a8f0c546daa9c9340226c0c4bc80176c85b5825b4c868426dcd70476ed. 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/DEA760704116.
Prinzessin Diana - Das Portrait - Hördokumentation
Die Geschichte der bekanntesten Attentate