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 0xee28f43af03d63210b213b67074436e43187137f156351d797ffcae8d53494b6. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0f9c60a-5e37-43ff-a68c-1a05229273eb.json and https://artists.proofprofile.net/proofs/artist/a0f9c60a-5e37-43ff-a68c-1a05229273eb.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 0xc5a14fc2da9e1755a92458b69a33b54b0daca99c5258109744a1936e50ff2e21. 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/PLA247519830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b154d184bd17edb4d1b485a897a2dcf6ffcfb4f40f30552a0e3deb34eb1d36a. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/PLA247519831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433fecb24f5e005b7a40cbc654e98cfd88691afbe7abf9d80c15eeaeda0c8213. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLA247518921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c83fde24f99f1a41db52fcfa2cca705891f1a8626600d22afe2658e6f43cd6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PL16A1900099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d12e13a629b8e74b7b9f8c238e042b4065d7434ad08813697e65e828181801. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/PL16A1900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c9f500e9f350fd64d48225d55c63016fd4a60255d5dd0ee66def4dbfe3d38b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/PLA248024520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb9fa100072d9c20f61485ef3bcc72654ad8921f513a95576dcb80516df6a94. 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/PLA248024521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70aa7b14de136557c960da12990e713660117abe80ede643f3423ce96a14880. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PLA248024522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b04244e518fccc8c00ac929a425cbf0719537dcea12d473171895f009d9478b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/PLA248024523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080d036cee9aba73c3bed6b71d23aa55f6f14ee91e702b470401a105ab46f5f9. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/CZA167700362.
Live in Neckargemund 1978.From a Town Called N.
Live in Köln 1979. In the shadow of the Dom
Live in Czechoslovakia 1980. Three Quarters
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7fd08ae62d1ebfedef06eb7415800eca3cd376381ed4cef3e09db18bb0cd1c. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/PLA391695001.