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 0xf03994a9f6a781d963c55de70b599167136e9d18a0d2abba3efac58059f0d435. 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/175d0e3a-af64-49e6-bfae-e2017a895a5b.json and https://artists.proofprofile.net/proofs/artist/175d0e3a-af64-49e6-bfae-e2017a895a5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Now - Tube & Berger, Modul Kollektiv Remix
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 0x72d2844ee65de40355c56ad2d62cbda18db8aee704e1a71d46889b682d26c733. 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/DEW872204007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc8a1896999090ef24e286a79294681ae99faf5799548817df666fd9785c001. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEY471881377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e965079d0da529fa82884c07892604663b34f04b0bab260245acfc6000f4577. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEY471811411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2805c0603568bf802dcb6f59102e1e34ce524fd1296aea37b5953d5e172358f1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEBW21800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38192cf8eaa4a22187370b90cae973c62e89b9b4d069ea1a9ca02ca71c678ce1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR10S1694041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91db698fed664884dcfe278e21b15d80488fa91be0dd41f7c781f228f15cb864. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR10S1694048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefee470fbd6d46eb98f52d02857dd74c13af779e41ca2ce9d2bfca3e0e6aec18. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DELC71200169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d677b12966206519d824c1631640d57e160cbd479589187c1c1e5ea9f07e164. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DELC71200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e4bef3ecdb298105bb8720a0efee7dcccde5929d503037dc725a7ebdcc7e36. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DELC71200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb890d51cf4ea96c5ec265ab405157ce559cb5050866da79807112be12270bf34. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DELC71200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3bcf43faf788d0d3b6d0181b912f1b36b3ca97dd44484b558fcd05a52a8a0f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEUD92399961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d29b1cbdf435fbea813a6e48e6e2dfdd5ac99b87ef92d45efd1be48dbfcae45. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US83Z2046376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e358571821c06d972c3bc077d778157fc009271833cd4822322737bd5392727. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEH742043257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4879eeeaf4b1538d0400d39341ff69239e6036fe8050bda84bed69555a6908. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEBE71900819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69aa8454d30e76bba173eeedac265e0c4cebfcd3b6f966a8c3e18b1dc887b4c9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEBE71900168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d196b46b0586b7d0f6ac8299177e9f89c7867287b4bdf919b9403157a8beca3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEH741304383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4879eeeaf4b1538d0400d39341ff69239e6036fe8050bda84bed69555a6908. 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/DEBE71900819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea623f431bcedf055fe4dc95a2cd33d6cc21d7c11f918f4e7738f9c8883a4801. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEH742406357.