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 0x688feb849f745afd66cb6ec04d9a13093e99b95f2c64572a06ff6e2b3ce8ba3d. 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/96dde2a3-fff6-460c-9334-3243d7a1ac42.json and https://artists.proofprofile.net/proofs/artist/96dde2a3-fff6-460c-9334-3243d7a1ac42.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ben Met Je (feat. ADF Samski & Kaya Imani)
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 0xc288b3ac5ff54c9f4dc12e75a29aba226f467ed212af0ab6a84d8fd050501165. 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/NL5HJ2400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8fa8b19580aecd3c6263f34e84f45a3034c511e7453ecbf333e6386693acb5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLG661700544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13816107146b2c0aba6ca5804ee87955b231b5c5a5fc7e00ad4c30d7fd8d3bb. 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/TCADP1837539.
Messenger - Daedalus' Revenge (feat. Lusho, ADF Lucky, Yozef, Black & ADF Ricky)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaa661a19c0d998f0073893f5de5fde948ef49c4d787ae4a3a5cb35cbea4305. 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/NL5MB2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dde6a57da0768992584ea0cdaf739e8c1f757e3542ece66ffb38b7e9b4fae64. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLG661600656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49fd2f3f32a1275d9677981b3f06b14bcb8779cbbaf5f3ac255afa99097fe35. 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/NL5MB2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b6c24b9c24cfc3e0c681e9813d333efc51025f126c64ab014e15c56701e4ec. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NL5HJ2400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b6c24b9c24cfc3e0c681e9813d333efc51025f126c64ab014e15c56701e4ec. 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/NL5HJ2400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8d3c19b29daad249ff68ae79ca9a78b20c77baab9fb9cb8e15b8bc7b35ce12. 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/NLG661900102.
Kind Van De Achterbuurt - Mixed by Deejay Abstract / Hosted by 4Shobangers
Top Notch Extravaganza: Summer '19 (Mixed by Deejay Abstract / Hosted by 4Shobangers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c27fc75a60e64cf95a2716c909fb21b70b33f239dd8a8679f7524db6212e84e. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/NLG661900653.
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