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 0x64b57793d96e0afd193b3a75eaec99ea2eaa00259f4dba565e958fd16e5fa3a5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6fd3084e-b92a-40de-8da6-e9acd6d18d87.json and https://artists.proofprofile.net/proofs/artist/6fd3084e-b92a-40de-8da6-e9acd6d18d87.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 0x191221e556dfbea703480e70c6adfd79fd63855a391e6dddbff1d5295bdc1dac. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH5331400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f2a70d4e33c8a14552f78c9448b46c7ac64a62b420a8d9a08ecf80a20c6dbc. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CH5331400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa971d8ed63c2b91d39327132b129a46805e4b00065bca986188a1218d6bce35e. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/CH5331400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6aeef6edbd5a0a0afdacfef16039f72d8cc75fcdf9763d06ce28e02713d8d6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CH5331400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558beab10bcac5f68135e3c67ec7d21851d841ca79d3ba315847b8c839dd207a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CH5331400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fb7f0f335f9b0880029296fd4b44d71733d0918274923fe755dac0004ee16c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CH5331400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318ea76816a0b30b38bde9b06f593fa16a41280fc7a7f2682adf98be46906b36. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CH5331400050.
Hansy Vogt präsentiert: Die Schlagerhits (20 Topschlager für den Sommer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc8f5bf89d8c453302b768fd1948a72020565585f6b30536bf14a3502a2bb27. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ATB842000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60394dcd4c24247c0352775e7686d74a128484c26a8a12a84ef1a43e13c0113f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ATB842000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416337acd046fe065da91ce8b81b6bbdda5206cab2e40538d914e69e38f626dc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ATB842100306.
Aprés Ski Megahits 2021 (Die Megahits der Skipiste 2021)
Hansy Vogt präsentiert: Die Schlagerhits (20 Topschlager für den Frühling)