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 0xeecdf27eae5fc4a86cc779d4dfb06ad83ff0fdca51635a53aa70391166908b3e. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/344934b3-bc51-4864-98fc-507fe4679418.json and https://artists.proofprofile.net/proofs/artist/344934b3-bc51-4864-98fc-507fe4679418.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pass the Glock (feat. Big Pun, Prospect, Fat Joe, Triple Seis, Cuban Link, & Armageaddon)
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 0x2714abf9dd369a1a545c90888960c35cf4165225c12ba83835f097a527a226ad. 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/USAT29900578.
Triple Threat (feat. Armageaddon, Big Pun, & Cuban Link)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3250517cc16f4cd39e79824f61d2364b4add9ace781a2528d67c05d5ecd10bdb. 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/USAT29901333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70b2f0811775883b0460caf80fb8efb101c9d88868d08673d1ae24cd6650741. 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/USAT29901337.
Feelin' This (feat. Armageaddon, Prospect & Big Pun)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bea059d0b3208d4b861e4bdea121e0b42eb88fda5a51513054c07790c9f646. 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/USAT29901338.
Tell Me What U Want (feat. Fat Joe, Armeageddon, Cuban Link & Tony Sunshine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2121e8f79b7795e750f9a8cdb092943f662ea1ae2226332f761798da6c12c7. 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/USAT29901340.
Payin' Dues (feat. Armageaddon & Keith Hunt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98243cc1478968e35ad99ec2ecb6e0d715ec54d367f299037338d2b235a185c7. 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/USAT29901343.