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 0x1abd134bbc70c936f856a7a5ba7aeec27ecf851f954f64af99b5e10821d82d6e. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eacc9022-4768-4f7f-92a2-20e4d423e45f.json and https://artists.proofprofile.net/proofs/artist/eacc9022-4768-4f7f-92a2-20e4d423e45f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
3 Phut Hon Funk - SLBG6X - 2 Phut Hon Funk remix
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 0xc59df9ffb7755727c1c5e0e943663db83038cde49afd5ecf3986cfab9577b712. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZFZ62560675.
3 Phut Hon Funk (slowed) - SLBG6X - 2 Phut Hon Funk remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e8d4f1caf7179b51d7a1e88793a73beb2b6dc8c5131e107778278221073d7a. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZFZ62560676.
3 Phut Hon Funk (super slowed) - SLBG6X - 2 Phut Hon Funk remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79df8fa1df19df94c2d675f543082727b5f79a46a17b67093c318e97f57e780a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ62560677.
3 Phut Hon Funk (speed up) - SLBG6X - 2 Phut Hon Funk remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55380ab75c947fd6f098eca97e21bec46c0efc08f0836bb7dc64782cdda9f038. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZFZ62560678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20dc96cf474ac86f8606ccce7f94ca480a06089252e33673ad0c9017ddeecbb5. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZN882515328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d00fc1052b4870dbdcb02bc99dc421674230bba9f4b4286d0d973b1b60fc86d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE57V2412857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477c53b652180ac746838b6039f50c75d8e0bd7d94b3c2ff74c3d75d9c0d330f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/SE57V2412859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc66fa768e2119ae9b666fc2a6a964ac9e093b52472bee64bfe2d204018f3a3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE57V2412861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07151ba6501292e35d5476260be4492e8db5c08248bc09a6664876357d14ae62. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/AEA3A2039685.