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 0xd69c9cbdc2a3261ebe95777828a111fc1b02e0aa972b4fd9b71b80e053f6c4f8. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f625a4bf-51c7-4353-a057-90bf15cd62fb.json and https://artists.proofprofile.net/proofs/artist/f625a4bf-51c7-4353-a057-90bf15cd62fb.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 0xce7a04aff80e0ca040e2b2c298dd9fdccab216cb5549efb561fdb92251ea8db3. 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/QM6N21408672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e93ea7d76544f3fdce444c9194d213ed354f834f745ef4482a2a72c5ea0e4e. 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/QM6MZ1441070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9055a52dd105b56d6d09c3bb0218124abd3150e3b7b060b9a6829da93f9686cc. 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/QMFMF1492931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8cbc7494d80b120b439a0659791aa2673b5e838601fa8b808ee86465af1734. 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/QMFMF1492933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92280f1c11960c2975c4cdf8e60c00d3e9a4fce7a9d852815d16f0b97c7f5b2. 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/QMFMF1492946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce435eae99ce744285fa37fe5ca611af91f21cca3a723d559356fe031366150. 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/QMFMF1492948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b4a8b3197f63edb8b5cf46277000db9efe3c1ad1062a64303aa2d7be3199ea. 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/LVA100900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346e64036dfeb2bda76d480946ff8b99afa14d989363a9f554c2e8bc32c8513d. 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/LVA741400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c93efc4e64f5187f63787c2654c1489aef8d6d2aecef5341b7236f37f2ae31c. 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/USV351472819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fe948f11c9955fdc6d67e4e826d68c684ba555dd513cab1683927af9749f94. 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/USV351472822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb38f1df93720aeeefadf0723edc42b8e060882c4a29b9085893d625263645f. 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/LVL152104244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb6369851763a8c7005ec5be74bcfc7628c4fb66d9a519319db2ac5e6621e79. 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/LVA100900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d12ef69d400bada9ed369173c97aea0a001b1d79aae8a591e42fad753813f1. 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/LVA100900100.
"Ich Möchte Noch Lieben" (Radio Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232c2caccbc37507a6a7486e4efe01930b218bf9bd1d4e855a73ee848e9d4306. 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/GBKPL1378125.