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 0xe5e07a565f10b37a5fe95454d171682a61edd98c93aa879cc9b22841d1bb6d9d. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54472851-fc5d-4836-bae9-44846d080d40.json and https://artists.proofprofile.net/proofs/artist/54472851-fc5d-4836-bae9-44846d080d40.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 0xc1fcf4727e11fb268471e542478fc06dc43a0c36f8f594b5f193fc0b446d12b1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/DEHM81300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb86c06d567aa97c8ba596fac7c4201e1ddd0df7ad6f7c6fc8573c9660671d0. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/DEHM81400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430a08a13fe4270db968ee2cd755c556e0a5850e823569055a95bf0db55d9bd9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEA472200298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884208a83a84ffd55649637e3a961a18c1beaf289cf34b29a60b5168c5fe7008. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/DEA472200299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd583e3daa19d10584695210600ee8bf4d5648aac4dfb2db5de572ddb56b13413. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEA472200300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61e29427be0a3c061b13685a89c087fd007c294d286b8b6261118da39e19ea5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEA472200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13d8d0b84f46ad53aea23e762ff3dd549a6a6c1693d3588b95a89718b9a38ad. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEA472200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a740651325e54d8fc71cde767c20e7dc8a606215e2ccbfeb28e51416e23254. 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/DEA472200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f2026775ad1a611a700ff6a96917528104fe2d71f8da1b913116f393b3a97d. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/DEA472200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46db77abff5e2bd12efd3d8d1d2fc940c89687660c70c8ffed4fcce5e5e538d0. 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/DEA472200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748cd959ac058b43821b87f9bb93d279999f45d519857ab7550c6dfd99d4da80. 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/DEA472200306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c97fa55bf4fe905b34b1291df1de84bf88bb51b54c34e3eacc5ab80c4cc28c. 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/DEA472200309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d957e82cae38321f88ad49ab4d8e961675827465e16d421e00de7e162a3e52. 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/DEA472200315.
Der Christkind Code: Ein Monster unterm Tannenbaum
DIE HNO-WG: Drei Detektive und ein verschwundener Graf
Der Christkind Code 2 - Der Geist der Weihnacht