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 0x5170a9ecea39f897a4c3c887aa7875ee0668d5d426e712bf36ec215bcacb1142. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74a28e68-77a8-4a82-97f4-2f16c5bfe0c0.json and https://artists.proofprofile.net/proofs/artist/74a28e68-77a8-4a82-97f4-2f16c5bfe0c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Singalwi (feat. Massive95K, Bean RSA, Tiiger, Zimmy & Marikana)
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 0x8cdf2e8107217b9cc656fa2cb860307cae7bb98f4e23d3e5139a318ccd6a4f5a. 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/ZA56E2419871.
Bula Pelo (feat. Tiiger, Bean RSA, Massive95K & Slidoo Man)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88e5d5b6c5951958cfec0ae5c50fe249c13b906d83a8bf9652dcb6838cedbdf. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ZA56E2419874.
Zitha Zam (feat. Massive95K, Tiiger & Lington)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97278ec0036c845cf2256c41c251e0d6d583b01091a8a8a19e4b54ebbc554a5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ZA56E2419876.
Madele Kufa (feat. Bean RSA, Massive95K, Tiiger, Dj Guti BPM, Don K, Jayden Lanii & Kay-T Direct)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b8ef8c401bad8c52eb99a156bfd60e0bdb00d0b9c68b70130a64b3eddc6f2c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ZA56E2419879.