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 0xcea9024633465cab7a1966734891fbfe346b8f67ed7022248bdbabd0fc87590a. 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/b9baa06f-6c5a-426c-ba15-5461075da0c5.json and https://artists.proofprofile.net/proofs/artist/b9baa06f-6c5a-426c-ba15-5461075da0c5.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 0x260f0c63458823e3479f3c0687310556bc88f01e6836ac04881069a2e5b4021e. 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/ATUM71001492.
Höchste Zeit - Ein Abend im Gasthaus Quell (frisch gemastert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10490e5e2158ba55fd2f0cc613764e81aa6ef0f969789e01f88ffe85a231342d. 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/ATUM71001443.
50 verschenkte Jahre im Dienste der Rockmusik (frisch gemastert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfef4843977fda4f8051067a2a7cec90b7f8df2d334798664ddc25b844a9150c. 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/ATUM71001474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd035b6b1aba239403403e521d7cd18c9252e8c83ff9df1eb604a5f2d6edd58. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATUM71001478.
2 neiche Liada, a Blutrausch und andere schene Sochn - 1995 bis 2005 (frisch gemastert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3748b7292f948f1cfaa8f38017187f84950e122b95d6286cfbbf6880b64db83a. 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/ATUM71001377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6341966a2ec15bf99ed18e1c8c2e4155a0d3da0468cc3a2aa467b96992c346. 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/ATUM71001414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d31d6d6ede7d8c9858dfa68e0e135e2e87973380f0573bcb068308059b1112e. 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/ATUM71001410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9350112de7abdf4112868964a52218b7ba3ca4d9bdfc24b1b853f51c3c2dfe0a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:45:41Z), 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/ATUM71100356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ba869d3369382a99f7edaf69ab043667a05ee6790e551daec325d0a57e1b8a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATUM71001372.
Steirermen san very good - Neuaufnahme 2011
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681b74db4a75be357e7f855559e0bc5d61af752f8f644707e89b696faa1d9b40. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEUM71100549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f26f7d965adc250cbd0b2f7e787a7c6e3493dbdee743f7198e7962e42ed8510. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATF069300470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b58f75c5c8058f1994daa18aeff8f08e0d80f6dbc0791959116c96d54493d02. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ATE064100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde32d50451c46a9d40e5691d6bb7abe493785585a9d1c48277c81ca6f8f557e1. 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/ATF069300370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da72ed968df1b8e854f03796e1544218dc49371e5c950b14d416501128f2027. 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/ATF069300500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a49f8f71a48af399d98d9cc0a53624b6bc658c63ce4646bd6d88c949c5fb36c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATE066100010.