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 0xe09dd6ebcad1f28fc58bd7c435920226c7727c8c100295a0d4be002a4cdee049. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5e2304d-07fd-4b85-aa37-c88e27924fed.json and https://artists.proofprofile.net/proofs/artist/d5e2304d-07fd-4b85-aa37-c88e27924fed.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 0xc55f8383d51cb98880c3ef4af93bc9c044d9df5a279ebcf2e4b57ad085bef6e2. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/US5ED2304470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e083a97a7260504874b90df8e2c2ad63259a61530e43b240aa45a7fb10fa20. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/US5ED2304664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0557e96c2e9b5045b52d4a82b81b32996e4d13428faec3b05edcac2f95bc7618. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USUYG1551371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82471b279249c048b1a3ac00184b43d96a06b59a4b6f3f1ab1b55ef29bcfc537. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US5ED2406753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fbedd024d6ca63f699ebac7f1ea8821b228a1a733008797f0ffa6a1c3ff34c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USUYG1588518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7219e63f832b6dfa24b4a7c1acef9cd4cf8e33ebd5752c24a86fe414faeaf3. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USUYG1721549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3979006d6d2c148da9c0c823c0c753cd99959f1d896bd4fd2e314445047322bd. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USUYG1744253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99db40c98edaec154ed8d3286fb9e3260773844952259bcd0f8e0aa14cf48f4b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US5ED2506766.
Who Dat (feat. Dyce Payso & Keen Streetz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3088562d039d64804e0e0580e40f6c1bfdad19ceac816c016c13ca9ec8cc61d. 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/USUYG1404614.
Pray For Enemiez (feat. Belly & Dyce Payso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2729935840c6d4cd841aaa640ed356200ce3e310941124a2b61f343c9cbdfd27. 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/USLD90803944.
Jim Jones Presents: 12 Days Of Xmas (Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc077fe5b5452836e8056c4652c93a4924dd579ec7bfd5ae1bfe2ca104382895. 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/USUYG1460992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb3cf337d5646f5e0ac8f48275672b9b3736c66fc2f0966e4c7ade33650aad7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USUYG1460996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b84c99a0c6789c0cb046001a9ba83c246fbf7105f2f15ce54210cc4b750f69d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USUYG1460993.