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 0x6c74951c8a0c6366e1f4ceb675fa7f153f8cc91278e902ee27c652a52c59bedc. 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/585c5ba6-f7bc-474b-ad68-008b9d5cb74d.json and https://artists.proofprofile.net/proofs/artist/585c5ba6-f7bc-474b-ad68-008b9d5cb74d.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 0x8a84586cb4212fabc56cd6e7626f1888579d9b6267fbd0a302148e6dcbb61f4c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBUM71604341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c82548e99c4f1d315258e996a3193afa810e6fe7664438bf804edfa0a9e92c. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GBUM71604348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e24c0f44d5881f16ec7be8ed91369681b3729c910f6987f9af1bd6f9f7aa53. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/GBUM71604339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc551e8d443a2dfffd1a6bd20566ad6829413ab9ee26eb67fffc4ba05a1735b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBUM71700831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18785afdd40608bc7dd1d1890ec6f0441e8e619e3158c9ee8ac20fceacaf01f6. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GBUM71701056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d923c74675f4d9180179ae367e2b1612d5c5956cfc4b83f40d237e4d7277846. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBUM71702043.
What’s The Word (EI Michels Affair Rework)
Jukebox Joints (feat. Joe Fox & Kanye West)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9076abef9d3b4544a87aacb0c2c2a1dd60a6e4bbdccf936835995b527aabe664. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC11500797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2587a63b6858aa42a250003be7c190626fd5db4aa8e39dc6dd25b0ecc033359. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC11500783.
Fine Whine (feat. Joe Fox, Future & M.I.A.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe213dce09f9cd97010f2a8a627c1a577df8212036f5ac3bbc0f186ea9dd703. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC11500787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2378df5b8d5b4ed9a2d060a2c08814c96d1b71879c5fda662e8a02acd7a4973d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC11500801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba52b743ba9cdaf17fb4dda132dbd6b26d8c4080bce9a41d14ea7a933e88310d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC11500799.