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 0x326a034a3006df33513aae01accb761d3fa0a5f4b98f7bce162c48c0d24f640e. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18d95faa-aef4-41ab-bdb2-6d906b33a8f8.json and https://artists.proofprofile.net/proofs/artist/18d95faa-aef4-41ab-bdb2-6d906b33a8f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ullmann: Der Kaiser von Atlantis; Hölderlin-Lieder
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 0xffa3fe5537db15812364f88f2ed72dbd56c2b4c54b52a9ce81dd9ae04bec7ee4. 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/GBF079340501.
Der Kaiser von Atlantis: Laß sein! Was singst du da
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9521ca29d55cbcb44d04a6fbe22365cc140af9675d2a33eb608f82c18bb97f46. 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/GBF079340504.
Der Kaiser von Atlantis: Hallo, hallo! Achtung! Achtung!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023842c2904ff9ef38f8a830a61ae9954d576c41da6732fe02df6aad75520317. 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/GBF079340507.
Der Kaiser von Atlantis: Der Mond geht auf den Firsten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacec61e68bd8db1e8233e629d8c1098ce2a43f023dd8577db79d7db2b5c51510. 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/GBF079340503.
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
Der Kaiser von Atlantis: Ich fühle mich wenig wohl
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45db4b5229aea0fa8caf829000e6a81fa40193a9aa2b2cf2144b072b4e944ea3. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBF079340505.
Der Kaiser von Atlantis: Wie spät ist es - Bin ich wahnsinnig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fc73f0f319aebae9a9e5684c2ed154f44c6bbd91a052118004cfbb42f3c149. 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/GBF079340509.
Der Kaiser von Atlantis: Komm, Tod, du unser werter Gast
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb915aad5100a411a7ec52de1631dfd64021fe32cc05cbb8ae0f781d32c87fc. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBF079340520.