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 0x1ab2978a486c8d9566a1781576a303dd51da575af71418961becfab3dbd7a292. 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/55ed0e59-d6f9-4b9e-8fdb-b3ff2f05488a.json and https://artists.proofprofile.net/proofs/artist/55ed0e59-d6f9-4b9e-8fdb-b3ff2f05488a.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 0x74dd0a6c6fd753dc60ee68ae5298d5905013d5f344d411cc1b946f46447416e1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ322400310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204167fe4da30b22cd98f04adb43423310184fd5d4254acf0c134d5322d3d4a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ322400384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f0d4e6dc305903bb561291d53dd2aaaf022a1554e9ffe65b51dec1455b3d6e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ322400459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204167fe4da30b22cd98f04adb43423310184fd5d4254acf0c134d5322d3d4a4. 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/DEQ322400384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dd0a6c6fd753dc60ee68ae5298d5905013d5f344d411cc1b946f46447416e1. 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/DEQ322400310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204167fe4da30b22cd98f04adb43423310184fd5d4254acf0c134d5322d3d4a4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEQ322400384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f0d4e6dc305903bb561291d53dd2aaaf022a1554e9ffe65b51dec1455b3d6e. 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/DEQ322400459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204167fe4da30b22cd98f04adb43423310184fd5d4254acf0c134d5322d3d4a4. 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/DEQ322400384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f0d4e6dc305903bb561291d53dd2aaaf022a1554e9ffe65b51dec1455b3d6e. 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/DEQ322400459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204167fe4da30b22cd98f04adb43423310184fd5d4254acf0c134d5322d3d4a4. 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/DEQ322400384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f0d4e6dc305903bb561291d53dd2aaaf022a1554e9ffe65b51dec1455b3d6e. 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/DEQ322400459.
Cold Brew (feat. LOTTE) - Streicherversion
Cold Brew (feat. LOTTE) [Streicherversion]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3b074ee55dc0e36ae393165a21f56275e607965f6db8532c4859662067181a. 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/DEKF22301582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800c358654fd30a764ce315621a90cfcabb4053f56ec3d0bd444a6699d392b62. 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/DEKF22301573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3b074ee55dc0e36ae393165a21f56275e607965f6db8532c4859662067181a. 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/DEKF22301582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30fa044ee919a52dc7407a6f1a350acdedbbca4e2d9fb479ed57fa74b6b981d. 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/DEKF22301575.