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 0xc58112aebda14ecaaef9fe493c9e360d1d798d4833703f3fdfd8c7964767194c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82bcec02-ec1a-4bec-93e9-cdfb91fd24f3.json and https://artists.proofprofile.net/proofs/artist/82bcec02-ec1a-4bec-93e9-cdfb91fd24f3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8304cc046ffb465f8eaeacac2790b399ba9550ce476ed31d8e7f8fb8f7273c4f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DEZ650610758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2728d9c67ca37b515ca9d191349402064d7eccd62b9539bba9238e5f4df7a9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:49:00Z), 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/DEZ650610766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dee76f7081ad8fb87a71090d49932f3edc2ca83ead49986d9c49e1b06e1c99. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:39Z), 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/DEZ650610781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796128bca813a551d20aff8e54ab2167382b6ad5e09372b2b46144b0537d239a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:17Z), 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/DEZ650610746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa839757b347b5dac6e7a914f94b6974eafd64c80906d3aeeb702c1d53f7643f6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEZ650610753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e77632c772ebc72fae0e1100e6b204d4e1c74c15ba098052d1baccb84b9e0c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEZ650610731.
Frauen Am Rande Des Nervenzusammenbruchs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813abae6daad53f7c5655608c081c91839c49d790d1f3ef7e99f2418236f4efb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEZ650610732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22154d673e4fb7ef06709278ef49a4900d47cbf0c68d3bebe0f18c2cb72ebc4f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEZ650610735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c68a7f6fa7430ac66eafa88e9445cd10fd7d8feafd6e7942a0b0b24f1e4f80. 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/DEZ650610741.